Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 50, Problem 1SYK
Summary Introduction
To describe: The way in which the path of light stimulus from where it enters the vertebrate eye to its transmission as an action potential through the optic nerve.
Introduction: The eye is the sensory organ responsible for vision. In humans, it is slightly asymmetrical and has several structures like sclera, cornea, conjunctivitis, pupil, iris, retina, and a convex lens. The coordinated function of all these structures is essential for proper functioning of the eye. Optic nerves are present at the retina that is responsible for conducting nerve impulses from and to the eyes.
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Chapter 50 Solutions
Study Guide for Campbell Biology
Ch. 50 - List and describe the four functions common to all...Ch. 50 - Prob. 2IQCh. 50 - Label the parts in the following diagram of the...Ch. 50 - Label the parts of the human eye in the following...Ch. 50 - The receptive field of a ganglion cell includes...Ch. 50 - Prob. 6IQCh. 50 - Identify the components in the following diagram...Ch. 50 - a. Identify the three distinct types of skeletal...Ch. 50 - List an advantage and a disadvantage of each of...Ch. 50 - a. Which mode of locomotion is the most energy...
Ch. 50 - Prob. 1SYKCh. 50 - Prob. 2SYKCh. 50 - Prob. 3SYKCh. 50 - Prob. 1TYKCh. 50 - Prob. 2TYKCh. 50 - Prob. 3TYKCh. 50 - Prob. 4TYKCh. 50 - Prob. 5TYKCh. 50 - Prob. 6TYKCh. 50 - Prob. 7TYKCh. 50 - Prob. 8TYKCh. 50 - The eyes of individuals with achromatopsia contain...Ch. 50 - Which of the following structures is incorrectly...Ch. 50 - Prob. 11TYKCh. 50 - The absorption of light by rhodopsin in a rod cell...Ch. 50 - Prob. 13TYKCh. 50 - Prob. 14TYKCh. 50 - Prob. 15TYKCh. 50 - Prob. 16TYKCh. 50 - The role of ATP in muscle contraction is to a....Ch. 50 - How does calcium affect muscle contraction? a. It...Ch. 50 - Prob. 19TYKCh. 50 - Prob. 20TYKCh. 50 - Prob. 21TYKCh. 50 - Prob. 22TYKCh. 50 - Prob. 23TYKCh. 50 - Which of the following combinations of animal size...
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- In the process of sensory coding Recruitment of additional neurons occurs with a weak stimulus in order to make the stimulus stronger. The larger the receptive field of a sensory receptor, the greater the expected acuity and the more accurate the two-point discrimination. Lateral inhibition of neighboring receptors resulting in a relative reduction of action potentials in the neighboring second order neurons would be expected to increase acuity. A receptor potential that remains suprathreshold into the absolute refractory period will result in additional action potentials.arrow_forwardExplain how receptors trigger sensory impulses.arrow_forwardList three ways in which rods and cones differ in structure or function.arrow_forward
- Describe the steps involved in vertebrate phototransduction by photoreceptors and further retinal processing by bipolar and ganglion cells.arrow_forwardHere you see an astigmatism illustration. Please explain why astigmatisms cause blurred vision in the context of our sense of sight. Please do not merely say “The light rays do not hit the focal point”. Please explain why that matters for the sense of sight.arrow_forwardDescribe each of the following types of receptors, indicating what sensation it detects and giving an example of where it can be found in the body: pain receptors (nociceptors), temperature receptors,mechanoreceptors (including proprioceptors and barorceptors/pressoreceptors), chemoreceptors, and photoreceptors.arrow_forward
- Put the following steps in order for transduction for vision. Question options: PDE breaks down cyclic GMP Photon is absorbed by discs the photoreceptor hyperpolarizes Sodium channels are inactivated and the dark current stops Opsin is activated Phosphodiesterase (PDE) is activated Transducin is activatedarrow_forwardDescribe olfactory neurons and explain how airbornemolecules can stimulate action potentials in olfactorynervesarrow_forwardIn an essay describe in details collection of stimuli at the sense organ and describe in detail receptors involved as well as graded potential and give examples.arrow_forward
- A scientist has dissected out a small section of the retina and is able to directly record the action potential firing rate in a single ganglion cell. Assume there is a on-center off-surround bipolar cell connected to an on-center off-surround ganglion cell. When applying ‘Stimulus 1’ the scientist records a moderate action potential rate. When applying ‘Stimulus 2’ the rate of action potentials increases substantially. In the context of this experiment no illumination is an option as a 'Stimulus'. ‘Stimulus 2’ would result in what response in the bipolar cell (the one connected to the ganglion cell the scientist is measuring)? A. A large depolarization of the bipolar cell membrane B. The bipolar cell membrane would remain at the resting membrane potential C. A large hyperpolarization of the bipolar cell membrane D. A small hyperpolarization of the bipolar cell membrane E. A small depolarization of the bipolar cell membranearrow_forwardHow is the duration of stimulus coded by the primary sensory neuron? (Human Physiology)arrow_forwardWhich of the following is an example of the process of transduction? Taste acceptance and rejection are processed in the hindbrain, while emotional reactions to taste are processed in forebrain. Different qualities of taste (sweet, salt, sour, bitter) activate different receptor cells in the taste buds. O A photon of light strikes a photopigment in a rod cell, changing the photopigment, which causes the close of ion channels, which reduces the rod's output of neurotransmitter. Molecules of alcohol evaporate from the surface of a liquid and get into your nasal passages.arrow_forward
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