Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159080
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 35, Problem 2.14A
List three ways in which rods and cones differ in structure or function.
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For each of the following, indicate whether it applies to rods or cones: vision in bright light; only one type of visual pigment; most abundant in the periphery of the retina; many feed into one ganglion cell; color vision; higher sensitivity; higher acuity.
Describe the physiology of how rods/cones work
Which of the following is the best explanation of why it is difficult to discriminate the color of an
object at night?
Rods contain a single visual pigment.
As many as 100 cones may converge on one ganglion cell.
Cones come in three types, each sensitive to different wavelengths of light.
The fovea are densely packed with cones.
Chapter 35 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 35 - The cornea and the sclera compose the ______ layer...Ch. 35 - We are able to see color because the eye contains...Ch. 35 - The perception of vision occurs in the a. optic...Ch. 35 - Which of the following is not part of the middle...Ch. 35 - The area of our eye where visual acuity is best is...Ch. 35 - Which of the following extrinsic skeletal muscles...Ch. 35 - The conjunctiva covers the superficial surface of...Ch. 35 - Tears from the lacrimal gland eventually flow...Ch. 35 - Figure 35.12 Label the structures in the sagittal...Ch. 35 - FIGURE 35.13 Sagittal of the eyes (5*). Identify...
Ch. 35 - Match the terms in column A with the descriptions...Ch. 35 - Prob. 2.13ACh. 35 - List three ways in which rods and cones differ in...Ch. 35 - Partial frontal cut of dissected cow eye. Label...Ch. 35 - Prob. 3.1ACh. 35 - What kind of tissue do you think is responsible...Ch. 35 - How do you compare the shape of the pupil in the...Ch. 35 - Where was the aqueous humor in the dissected eye?Ch. 35 - What is the function of the dark pigment in the...Ch. 35 - Prob. 3.6ACh. 35 - Describe the vitreous humor of the dissected eye.Ch. 35 - A song blow to the head might cause the retina to...
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- 3. Soru Which of the following is a false statement about photoreceptors of the eye? A) Cones are active at high light levels and have high spatial acuity. B) Rods are responsible for scotopic vision while cones are responsible for photopic vision. C) Rods are active at low light level and have low spatial acuity. D) There are two types photoreceptors: rods and cones. E) The ratio of rods to cones in the retina is higher in humans than it is in dogs.arrow_forwardRods differ from cones in the following ways: a. They detect dim light, not bright light. b. They have a different visual pigment. c. They are not located in the retina. d. All of the above. e. a and b onlyarrow_forwardWhy do rods provide greater visual sensitivity while cones provide better acuity?arrow_forward
- Match the following statements to the type of cell in the eye each describes (rods or cones). Select "Both" if the statement is true of both cell types. Rods Directly detects light coming into the eye. Different types of this cell Cones respond to different wavelengths (colors) of light. More sensitive to low levels of light. Rods Found in high concentrations at the fovea centralis. Cones < <arrow_forwardDiscuss the function and distribution of rods and cones.arrow_forwardWhat are the differences between rods and cones with respect to their anatomy, their photopigments, and the light they process?arrow_forward
- Which of the following best describes the function of a camera type eye? A) To form high-definition images that are transmitted to the brain. B) To gather and concentrate light through a lens onto retinal tissue which generates an impulse that is transmitted to the brain. C) To protect the optic nerve which generates an impulse that is transmitted to the brain. D) To detect vibrations through the vitreous body which generates an impulse that is transmitted to the brain.arrow_forwardProvide a list of any five features of the human eye that contribute to its ability to detect and record visual information in the real world.arrow_forwardYou are watching the stars at night, and you never seem to be looking at the right spot to catch the brightest meteors. Which of the following might explain this? a)Your fovea contains mostly cones; thus you see dim light especially well when looking right at it. b)Your peripheral retina contains more rods, which are more sensitive to dim light than cones; thus objects in your peripheral vision appear brighter in dim light situations. c)Detection of light depends mostly on its color rather than intensity; thus cones play a larger role in detection of light in dim light situations. d) all of the above. ( well explain the correct answer and type answer).arrow_forward
- Which statement about the events of photoreception is false? a) as a rod cell hyperpolarizes, its release of neurotransmitter increases b) there is more Na+ entry into a rod cell in the dark than in the light c) bipolar cells release more neurotransmitter in the light than in the dark d) as a bipolar cell depolarizes, its release of neurotransmitter increases e) when a rod cell releases neurotransmitter the bipolar cell it synapses with hyperpolarizesarrow_forwardkey function of rod photoreceptors is to: detect colors detect fine details in the visual field. detect light under low levels of illumination. detect light under high levels of illumination. During phototransduction, transducin activates phosphodiesterase (PDE) that converts: GTP to GDP CGMP to GMP retinal cis to retinal trans retinal trans to retinal cisarrow_forwardAll sensory organs convert energy in the environment into action potentials in the nervous systern. Explain the process of how our ears convert energy in the form of sound waves in the air into action potentials along a nerve. Include the appropriate order of structures and regions of the ear as well as the physiological process of creating action potentials and interpreting them in the brain.arrow_forward
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