Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Chapter 14, Problem 10ILQ
Watch this video (http://openstaxcollege.org/l/reflexarc) to learn more about the reflex arc of the corneal reflex. When the right cornea senses a tactile stimulus, what happens to the left eye? Explain your answer.
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Watch this video (http://openstaxcollege.org/l/reflexarc) to learn more about the reflex arc of the cornealreflex. When the right cornea senses a tactile stimulus, whathappens to the left eye? Explain your answer.
Watch this video (Links to an external site.) to learn more about the reflex arc of the corneal reflex. When the right cornea senses a tactile stimulus, what happens to the left eye?
Watch this video (http://openstaxcollege.org/l/occipital) to learn more about a transverse section throughthe brain that depicts the visual pathway from the eye tothe occipital cortex. The first half of the pathway is theprojection from the RGCs through the optic nerve to thelateral geniculate nucleus in the thalamus on either side.This first fiber in the pathway synapses on a thalamic cellthat then projects to the visual cortex in the occipital lobewhere “seeing,” or visual perception, takes place. This video gives an abbreviated overview of the visual systemby concentrating on the pathway from the eyes to theoccipital lobe. The video makes the statement (at 0:45) that“specialized cells in the retina called ganglion cells convertthe light rays into electrical signals.” What aspect of retinalprocessing is simplified by that statement? Explain youranswer.
Chapter 14 Solutions
Anatomy & Physiology
Ch. 14 - Watch this video...Ch. 14 - Figure 14.9 The basilar membrane is the thin...Ch. 14 - Watch this video...Ch. 14 - Watch this animation...Ch. 14 - Watch this video...Ch. 14 - Watch this video...Ch. 14 - The inability to recognize people by their faces...Ch. 14 - Watch this video...Ch. 14 - Visit this site...Ch. 14 - Watch this video...
Ch. 14 - Watch this video...Ch. 14 - What type of receptor cell is responsible for...Ch. 14 - Which of these cranial nerves is part of the...Ch. 14 - Which submodality of taste is sensitive to the pH...Ch. 14 - Axons from which neuron in the retina make up the...Ch. 14 - What type of receptor cell is involved in the...Ch. 14 - Which of these sensory modalities does not pass...Ch. 14 - Which nucleus in the medulla is connected to the...Ch. 14 - Visual stimuli in the upper-left visual field will...Ch. 14 - Which location on the body has the largest region...Ch. 14 - Which of the following is a direct target of the...Ch. 14 - Which region of the frontal lobe is responsible...Ch. 14 - Which exuapyramidal tract incorporates equilibrium...Ch. 14 - Which region of gray matter in the spinal cord...Ch. 14 - What type of reflex can protect the foot when a...Ch. 14 - What is the name for the topographical...Ch. 14 - The sweetener known as stevia can replace glucose...Ch. 14 - Why does the blind spot from the optic disc in...Ch. 14 - Following a motorcycle accident, the victim loses...Ch. 14 - A pituitary tumor can cause perceptual losses in...Ch. 14 - The prefrontal lobotomy is a drastic—and largely...Ch. 14 - If a reflex is a limited circuit within the...
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- Watch this video (Links to an external site.) to learn more about a transverse section through the brain that depicts the visual pathway from the eye to the occipital cortex. The first half of the pathway is the projection from the RGCs through the optic nerve to the lateral geniculate nucleus in the thalamus on either side. This first fiber in the pathway synapses on a thalamic cell that then projects to the visual cortex in the occipital lobe where “seeing,” or visual perception, takes place. This video gives an abbreviated overview of the visual system by concentrating on the pathway from the eyes to the occipital lobe. Specialized cells in the retina called ganglion cells convert the light rays into ________________.arrow_forwardWhich nerve projects to the hypothalamus to indicate the level of light stimuli in the retina?a. glossopharyngealb. oculomotorc. opticd. vagusarrow_forwardWatch this video (Links to an external site.) to learn more about how the brain perceives 3-D motion. Similar to how retinal disparity offers 3-D moviegoers a way to extract 3-D information from the two-dimensional visual field projected onto the retina, the brain can extract information about movement in space by comparing what the two eyes see. If movement of a visual stimulus is leftward in one eye and rightward in the opposite eye, the brain interprets this as movement toward (or away) from the face along the midline. Which eye is visualizing leftward stimulus?arrow_forward
- Watch this video (http://openstaxcollege.org/l/ear1) to learn more about how the structures of the ear convert sound waves into a neural signal by moving the “hairs,” or stereocilia, of the cochlear duct. Specific locations along the length of the duct encode specific frequencies, or pitches. The brain interprets the meaning of the sounds we hear as music, speech, noise, etc. Which ear structures are responsible for the amplification and transfer of sound from the external ear to the inner ear?arrow_forwardYou are driving at night on a two lane road, and you see a bright light. The light pass through your pupil, and your lens concentrates the light at retina. This stimulates the visual pathway. Your visual association center processes the signal from your eye and determines the lights is from a flashlight that an old lady is holding while crossing the street. Your visual association center sends a signal to your primary motor cortex, which sends a signal down the lateral corticospinal tract. This signal then proceeds down the spinal cord, out the posterior gray horn of the spinal cord, and out the ventral roots of efferent motor neurons. The motor signal travels from the sacral plexus and out towards the sciatic nerve. To answer this question, number the following steps in the correct order starting with the signal exiting the sciatic nerve. Number in order from 1-15 ______The cycle repeats and now many muscle fibers in the gastrocnemius begin to contracts in unison. _____Calcium ions…arrow_forwardWhat is the difference between a sensation and a perception. Name four types of sensory receptors.arrow_forward
- Using your knowledge, compare the size of the somatosensory cortex representing the fingertips for a visually impaired person who reads Braille (increased tactile sensitivity) to that of someone with normal vision who has normal tactile sensitivity.arrow_forwardgive the basic functioning of the following special senses: sight, smell, taste, and hearing. Then think about which sense you would miss the most if you lost it. Various medical conditions and situations can cause those senses to be blunted or lost entirely. Which sense do *you* feel would be most problematic to lose?.arrow_forwardDiscuss the importance of performing the Pupillary Light Reflex test. Why is Pupillary Dark Reflex test necessary to perform in the clinic?arrow_forward
- Which abnormality of the eye is correctly matched?a. cataracts—cloudy corneasb. glaucoma—intraocular pressure is decreasedc. farsightedness—eyeball is longer than usuald. nearsightedness—image focuses behind the retinae. astigmatism—cornea or lens is unevenarrow_forwardA child has one eye that seems to move medially on its own at rest, and she is unable to move the eye laterally. You are told this is a strabismus due to malfunction of one of the cranial nerves. Which nerve and which muscle are affected? Explain your answerarrow_forwardWatch this video (http://openstaxcollege.org/l/2point) to see a quick demonstration of two-point discrimination. Touching a specialized caliper to the surface of the skin will measure the distance between two points that are perceived as distinct stimuli versus a single stimulus. The patient keeps their eyes closed while the examiner switches between using both points of the caliper or just one. The patient then must indicate whether one or two stimuli are in contact with the skin. Why is the distance between the caliper points closer on the fingertips as opposed to the palm of the hand? And what do you think the distance would be on the arm, or the shoulder?arrow_forward
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