Air that initially occupies 0.140 m at a gauge pressure of 103.0 kPa is expanded isothermally to a pressure of 101.3 kPa and then cooled at constant pressure until it reaches its initial volume. Which of the following would stimulate somatic nociceptors? Various feature extraction methods have been proposed in the literature. d. Astigmatism, What may be the cause of hyperopia? Merkels disks and Meissners corpuscles are not as plentiful in the palms as they are in the fingertips. Can an ultrasound detect placental . d. Reduced lens flexibility, Photoreceptors in the retina of the eye detect changes in light intensity and wavelength. Fill in the blanks. c. sensory neurons. 5 - A pressure wave in the endolymph of the cochlear duct displaces a specific region of the basilar membrane. 3. vestibular membrane The cells in the retina that respond to light stimuli are an example of a specialized receptor cell, a photoreceptor. . e - Cochlear branch of CN VIII (vestibulocochlear nerve) Some transmembrane receptors are activated by chemicals called ligands. If the volcanic rocks were launched at an angle of 4040^{\circ}40 with respect to the horizontal and landed 900m900 \mathrm{~m}900m below the crater, (a) what would be their initial velocity and (b) what is their time of flight? In 2009, an eruption threw solid volcanic rocks that landed 1km1 \mathrm{~km}1km horizontally from the crater. Figure1. These modalities include pressure, vibration, light touch, tickle, itch, temperature, pain, proprioception, and kinesthesia. * acids The subject reports if they feel one point or two points. Journals. g. Auditory tube, Outer: what type of receptors detect deep pressure and vibration? 2) Vascular tunic Spinal injuries may result in paralysis, or the loss of muscle function and feeling in part of the body. and (6, -3.8). detect pain, temperature. The bipolar cells do not stimulate the ganglion cells. What does the molecular similarity of stevia to glucose mean for the gustatory sense. 6 - Hair cells in the spiral organ are distorted. e. gets lower and softer. e. Tectorial membrane, Which of the following structures is deepest in the inner ear? The sphincter pupillae is controlled by the __________ division of the nervous system. Four of the primary mechanoreceptors in human skin are shown. Ruffini endings are slow adapting, encapsulated receptors that respond to skin stretch and are present in both the glabrous and hairy skin. Physical stimuli, such as pressure and vibration, as well as the sensation of sound and body position (balance), are interpreted through a mechanoreceptor. detect hearing and balance. Other somatosensory receptors are found in the joints and muscles. External ear 2. A long eyeball What are the three types of receptors that detect touch and pressure? with the x and y coordinates of the vertices, respectively. a. stimuli They respond to fine touch and pressure, but they also respond to low-frequency vibration or flutter. This allows sodium ions to flow into the cell, creating a receptor potential. 3. The Cardiovascular System: Blood Vessels and Circulation, Chapter 21. Vibrations in the perilymph move the: a. tympanic membrane b. basilar membrane c. tectorial membrane d. stapes; What type of stimulus is detected by the sensory receptors of the skin? If you drag your finger across a textured surface, the skin of your finger will vibrate. Mechanoreceptors respond to mechanical stimuli and are the basis for most aspects of somatosensation, as well as being the basis of audition and equilibrium in the inner ear. These two modalities use thermoreceptors and nociceptors to transduce temperature and pain stimuli, respectively. The Cellular Level of Organization, Chapter 4. Mechanoreceptors in the skin are described as encapsulated or unencapsulated. f. Nasolacrimal duct. c) Cold. Summarize Rutherfords model of the atom, and explain how he developed this model based on the results of his famous gold-foil experiment. 4. *Cochlea They respond to fine touch and pressure, but they also respond to low-frequency vibration or flutter. Chemoreceptors are stimulated by a change in the chemical composition of the local environment. What type of receptor detects changes in light? Click and drag the structures involved in the auditory projection pathway to the correct item shown in the figure. An interoceptor is one that detects stimuli from internal organs and tissues, such as the receptors that sense the increase in blood pressure in the aorta or carotid sinus. - Supporting cells The bipolar cells stimulate the ganglion cells. Light touch, also known as discriminative touch, is a light pressure that allows the location of a stimulus to be pinpointed. a. basilar membrane. Humans can perceive various types of sensations, and with this information, our motor movement is determined. c. incus. By the end of this section, you will be able to: A major role of sensory receptors is to help us learn about the environment around us, or about the state of our internal environment. 4 - The vestibular membrane begins to vibrate. Meissner's corpuscles detect changes in texture (vibrations around 50 Hz) and adapt rapidly. Receptors are spread throughout the body, with large numbers found in the skin. b. Lacrimal sac Tears contain an antibiotic-like enzyme called __________. b. Visceral pain can be so great that it causes somatic pain. What type of receptor picks up pressure? Pacinian receptors detect pressure and vibration by being compressed which stimulates their internal dendrites. Did you have an idea for improving this content? The nasolacrimal duct is found on the __________ side of the nose. *Semicircular canals muscle systems has important sensory structures called stretch receptors, which monitor the state of the muscle and return the information to the central nervous system. -Epiglottis, a. Axons of ganglion cells from nasal halves of both retinas, Which nerve fibers cross in the optic chiasma? They are rapidly adapting mechanoreceptors that sense deep transient (but not prolonged) pressure and high-frequency vibration. The dynamics of capsaicin binding with this transmembrane ion channel is unusual in that the molecule remains bound for a long time. : *Stapes *Tensor tympani muscle middle Structures apart of inner, middle, or outer ear? Respond to deep and continuous pressure k. Muscle spindles i. Proprioceptors that Detect muscle stretch and initiate a reflex that resists the stretch l. Tendon organs i. Proprioceptors located in tendons that detect stretch m. Joint kinesthetic i. assuming that the spacing of the 16mm16-\mathrm{mm}16mm-diameter rods is increased to 225mm225 \mathrm{~mm}225mm on centers. 7. basilar membrane, What ion is responsible for depolarization of hair cells of the spiral organ? Hearing and balance are also sensed by mechanoreceptors. 7. ends with the round window, free nerve endings are terminal branches of. a. the pupil size is too narrow. a. medial geniculate nucleus. Meissners corpuscles extend into the lower dermis. 5. basilar membrane Some stimuli are physical variations in the environment that affect receptor cell membrane potentials. There are multiple types of mechanoreceptors in the skin that are activated by different types of touch stimuli The receptive field size differs among the types of mechanoreceptors The adaptation rate differs among the types of mechanoreceptors Receptive field is a region of skin that activate a given mechanoreceptor b) Heat. -Uses photopsin. The average intensity of light emerging from a polarizing sheet is 0.764W/m20.764 \mathrm{W} / \mathrm{m}^{2}0.764W/m2, and the average intensity of the horizontally polarized light incident on the sheet is 0.883W/m20.883 \mathrm{W} / \mathrm{m}^{2}0.883W/m2. Large receptors respond to deep pressure and vibration j. Ruffini endings (bulbous corpuscle) i. * H+, EXs associated w/ what taste sensation? a. Bony labyrinth 5. Action potentials are transmitted out of the optic nerve. - Basal cells. The bulbous corpuscles (also known as Ruffini endings) detect tension deep in the skin and fascia. 3. perilymph of scala vestibule Capsaicin molecules bind to a transmembrane ion channel in nociceptors that is sensitive to temperatures above 37C. b. tympanic membrane. MRI image testing does a good job of finding deep vein thrombosis(DVT) in the thigh and pelvis. These receptors respond to changes and stimuli in the environment. -Pinna (auricle) What structure makes up the posterior portion of the fibrous tunic? Inner ear Receptors for general senses are usually ____. * caffeine *Vestibular 7 - The cochlear branch of CN VIII (vestibulocochlear nerve) is stimulated. The extraction of relevant features from the photoplethysmography signal for estimating certain physiological parameters is a challenging task. Nociception is the sensation of potentially damaging stimuli. The hypodermis, which holds about 50 percent of the bodys fat, attaches the dermis to the bone and muscle, and supplies nerves and blood vessels to the dermis. Muscle spindles are stretch receptors that detect the amount of stretch, or lengthening of muscles. - Exposure to acid on the skin Pacinian receptors detect pressure and vibration by being compressed, stimulating their internal dendrites. -Basilar membrane. Anterior two-thirds of the tongue - Facial nerve (CN VII) Receptors can be classified structurally on the basis of cell type and their position in relation to stimuli they sense. c. Central artery and vein c. gets higher and louder. They, too, are found primarily in the glabrous skin on the fingertips and eyelids. There are a few types of hair receptors that detect slow and rapid hair movement, and they differ in their sensitivity to movement. These include receptors for taste and smell as well as visceral receptors that are sensitive to changes in the plasma level of O 2, pH, and osmolality. - LIGHT. This process is called sensory transduction. How can a person perceive over 4,000 different odors? Meissner's corpuscles respond to pressure and lower frequency vibrations, and Pacinian corpuscles detect transient pressure and higher frequency vibrations. Prove the given statement. If this graded post-synaptic potential is strong enough to reach threshold it will trigger an action potential along the axon of the sensory neuron. c. Cl- Pressure, vibration, muscle stretch, and the movement of hair by an external stimulus, are all sensed by mechanoreceptors and perceived as touch or proprioception. 1 - Auricle Related to chemoreceptors are osmoreceptors and nociceptors for fluid balance and pain reception, respectively. lamellated corpuscles Structures apart of inner, middle, or outer ear? d. tympanic membrane. Determine the angle that the transmission axis of the polarizing sheet makes with the horizontal. Deeper in the dermis, near the base, are Ruffini endings, which are also known as bulbous corpuscles. b. gets higher. a.The brain gives preference to exteroreceptors. Different types of stimuli are sensed by different types of receptors. Merkel's discs detect sustained touch and pressure. d. gets lower. In this demonstration, two sharp points, such as two thumbtacks, are brought into contact with the subjects skin (though not hard enough to cause pain or break the skin). Stapes e. hair cells covered by a tympanic membrane. (a) To explain how to cure paralysis, (b) To persuade people to wear helmets, (c) To describe the effects of spinal injuries, (d) To describe different types of paralysis. 4. endolymph of cochlear duct Destruction or atrophy of retinal pigment epithelium, Cornea or lens not uniformly curved and image is not sharply focused, Excessive pressure buildup in the aqueous humor. If the statement is false, change the underlined word or words to make the statement true. Solve a concrete slab is reinforced by 16mm16 -\mathrm{mm}16mm-diameter steel rods placed on 180mm180-\mathrm{mm}180mm centers as shown. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. 4) Nasolacrimal duct. Tags: Question 22 . what is the order that sounds travels in the inner ear? In this paper, an acoustic radiation force-optical coherence elastography (ARF-OCE) system was proposed to evaluate LVC by measuring the residual stromal bed (RSB) elasticity, because it is directly relevant to the RSB . A special sense (discussed in Chapter 15)is one that has a specific organ devoted to it, namely the eye, inner ear, tongue, or nose. Sensation is the activation of sensory receptors at the level of the stimulus. What chamber is between the iris and cornea? 1. An Introduction to the Human Body, Chapter 2. They are found in both glabrous and hairy skin. Q. dendrites enclosed in a capsule. d - Cochlear nucleus Pacinian corpuscles, such as these visualized using bright field light microscopy, detect pressure (touch) and high-frequency vibration. Electrical sensors and stimulators can help quadriplegic victims flex their limbs. Middle: Figure 2. Aqueous humor is secreted into the __________ chamber before traveling to the __________ chamber of the eye. Classify the given terms or examples with the appropriate category. The cartilaginous portion of the external ear is called the: What type of mascular degeneration is most severe? The lamellar corpuscles (also known as Pacinian corpuscles) in the skin and fascia detect rapid vibrations (of about 200-300 Hz). Which of the following are examples of encapsulated receptors? Myopia c. primary auditory cortex. These nerve endings detect the movement of hair at the surface of the skin, such as when an insect may be walking along the skin. That makes them finely sensitive to edges and they come into use in tasks such as typing on a keyboard. How many auditory ossicles are found in each ear? The vitreous body is also called the vitreous __________. http://cnx.org/contents/185cbf87-c72e-48f5-b51e-f14f21b5eabd@10.8, Describe four important mechanoreceptors in human skin, Describe the topographical distribution of somatosensory receptors. - They are immobile. Stretch receptors monitor the stretching of tendons, muscles, and the components of joints. b. ossicles of the middle ear What do stretch receptors do? Because of this, it will decrease the ability of other stimuli to elicit pain sensations through the activated nociceptor. Oval window. How does light affect rhodopsin? What causes Trachoma, a type of conjunctivitis? c. Visceral sensory neurons travel along the same pathway as many somatic sensory neurons. e. stapes. meissner corpuscles are type of receptors present in the skinf which is r . The posterior cavity contains the __________ canal, a remnant of embryonic development. The large mechanoreceptorsPacinian corpuscles and Ruffini endingsare located in the lower layers and respond to deeper touch. Order the auditory ossicles from lateral to medial. e. stapes. Other stimuli include the electromagnetic radiation from visible light. An MRI can provide images of your veins that may show if a blood clot has formed. - Utricle. __________ of the eye is receded into the orbit. Ruffini endings also detect warmth. 2. round window For the function name and arguments, use TriCirc (A, B, C). What structure is attached to the oval window and transfers vibration of the tympanic membrane to the inner ear? Are receptors that can respond to changes in pressure? Merkel cells are expanded dendritic endings, and they respond to sustained pressure and touch. Exteroceptors Gustatory cells are found in taste __________. 2. perilymph of scala vestibule Stretch receptors are found at various sites in the digestive and urinary systems. Note that these warmth detectors are situated deeper in the skin than are the cold detectors. -Cornea has no output arguments. d. Temporal bone. In low-light conditions, only rods are activated, and visual acuity is best in the ________ of the eye. Which auditory ossicle contacts the oval window? The cells that are photoreceptors (detect color) are ________. d. Optic tract Stimuli are of three general types. Asama, Japan, is an active volcano. A detached retina is caused by a separation between which two layers? -Infolded plasma membrane surrounds each disc deep tactile receptors detects continuous pressure in skin; when stretching the skin Pacinian corpuscle: deepest receptors: they are located in between the deep dermis & subcutaneous layer; and since it is located deeper, it has contact to our muscles and joints. Mechanoreceptors - provides sensations of touch, pressure, vibration, proprioception, a. Glutamate The vestibule contains two structures, the utricle and __________. Chapter 1. - DARK Somatosensation belongs to the general senses, which are those sensory structures that are distributed throughout the body and in the walls of various organs. A part of the auditory pathway responsible for auditory reflexes is the Mascular degeneration occurs when the __________ degenerates. Label the figure with the items provided. a. Incus The general senses can be divided into somatosensation, which is commonly considered touch, but includes tactile, pressure, vibration, temperature, and pain perception. c. basilar membrane and tectorial membrane. Each of the senses is referred to as a sensory modality. A tactile sensory receptorcan be defined as the peripheral ending of a sensory neuron and its accessory structures, which may be part of the nerve cell or may come from epithelial or connective tissue. For example, a molecule in food can serve as a ligand for taste receptors. They are rapidly-adapting mechanoreceptors that sense deep, transient (not prolonged) pressure, and high-frequency vibration. Order the regions of the ear from lateral to medial. 1) Sclera 2) Choroid 3) Pigmented layer 4) Neural layer What type of receptor is found in the mucous membranes? Possible cures include removal of scar tissue and transplantation of cells that promote nerve growth. What structure transforms one type of energy into a different type of energy? Different kinds of receptors respond to different kinds They are found primarily in the glabrous skin on the fingertips and eyelids. A general sense is one that is distributed throughout the body and has receptor cells within the structures of other organs. 6. perilymph of scala tympani Temperature receptors are free nerve endings. As tears drain through the lacrimal caruncle they enter small holes called the lacrimal __________. Accordingly, cell type-specific deletion of PAR2 in myeloid immune cells resulted in a curtailed skin inflammation and hapten-specific T cell response in CHS mice. Free nerve endings are sensitive to painful stimuli, to hot and cold, and to light touch. What is the name of the elevated region of the ampulla? Transduction refers to . What is the margin between the photosensitive and nonphotosensitive regions of the retina called? e. Lateral geniculate nucleus (credit: modification of work by Ed Uthman; scale-bar data from Matt Russell). The bipolar cells stimulate the ganglion cells. 6 - Scala vestibuli - Foliate : -High degree of neural convergence Can a mri detect a blood clot? Incus b. oval window. - DARK They are rapidly- adapting, fluid-filled, encapsulated neurons with small, well-defined borders which are responsive to fine details. These receptors transmit information along the vagus nerve (10th cranial nerve) to the central nervous system. - LIGHT They induce pain. They may be massed together to form a sense organ, such as the eye or ear, or they may be scattered, as are those of the skin and viscera. -Sclera If the two points are felt as one point, it can be inferred that the two points are both in the receptive field of a single sensory receptor. The nerves that convey sensory information from the periphery to the CNS are either spinal nerves, connected to the spinal cord, or cranial nerves, connected to the brain. a. medial geniculate nucleus. Place the ossicles of the ear in order from the tympanic membrane to the oval window. Meissners corpuscles are rapidly-adapting, encapsulated neurons that responds to low-frequency vibrations and fine touch; they are located in the glabrous skin on fingertips and eyelids. Lies deep to dermis. The Cardiovascular System: The Heart, Chapter 20. Pacinian corpuscles, Ruffini endings, and Krause end bulbs detect pressure. Pacinian corpuscles (seen in Figure4) are located deep in the dermis of both glabrous and hairy skin and are structurally similar to Meissners corpuscles; they are found in the bone periosteum, joint capsules, pancreas and other viscera, breast, and genitals. Unencapsulated OR Encapsulated Tactile Receptor: After the thalamus, auditory nerve signals reach the. Accommodation is the process of making the lens: What type of receptors detect deep pressure and vibration? Treated with concave lens. Unconscious proprioceptive signals run from the spinal cord to the cerebellum, the brain region that coordinates muscle contraction, rather than to the thalamus, like most other sensory information. Which is a type of tonic receptor that detects both continuous deep pressure and distortion of the skin? 2 - Sound waves are amplified due to movement by the auditory ossicles. a. Na+ Thirdly, the functional classification is based on how the cell transduces the stimulus into a neural signal. Light touch, also known as discriminative touch, is a light pressure that allows the location of a stimulus to be pinpointed. c. broad and deep. Thermoreceptors are sensitive to temperature changes, and photoreceptors are sensitive to light energy. Sensory receptors respond to: light touch: tactile (Meissner) corpuscles, in dermal papil- lae. What do Merkel cells detect? 2. round window, What is the correct order through which sound travels in the inner ear? b. Incus Deep pressure and vibration is transduced by lamellated (Pacinian) corpuscles, which are receptors with encapsulated endings found deep in the dermis, or subcutaneous tissue. What are receptors for the general senses? The cranial nerves are connected to the same side of the brain from which the sensory information originates.

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