This question asks you about a typical neuron and NOT photoreceptors. As stimulus intensity is increased, recording from a single neuron USUALLY shows the amplitude of the action potential increases. the amplitude of the action potential decreases. the amplitude of the action potential may increase or decrease, depending on the stimulus. the rate of firing of the nerve fiber increases. 2. An inhibitory transmitter _______ the firing rate of a neuron and an excitatory transmitter ________ the firing rate. increases; decreases increases; increases decreases; decreases decreases; increases

This question asks you about a typical neuron and NOT photoreceptors. As stimulus intensity is increased, recording from a single neuron USUALLY shows the amplitude of the action potential increases. the amplitude of the action potential decreases. the amplitude of the action potential may increase or decrease, depending on the stimulus. the rate of firing of the nerve fiber increases. 2. An inhibitory transmitter _ the firing rate of a neuron and an excitatory transmitter __ the firing rate. increases; decreases increases; increases decreases; decreases decreases; increases

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter41: Sensory Systems

Section: Chapter Questions

Problem 8TYK

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Given these events:(1) Bipolar cells depolarize.(2) Glutamate release from presynaptic terminals of photoreceptorcells decreases.(3) Light strikes photoreceptor cells.(4) Photoreceptor cells are depolarized.(5) Photoreceptor cells are hyperpolarized.Choose the arrangement that lists the correct order of events, startingwith the photoreceptor cells in the resting, nonactivated state.a. 1,2,3,4,5 b. 2,4,3,5,1 c. 3,4,2,5,1 d. 4,3,5,2,1 e. 5,3,4,1,2
Which one of the following statements about photoreception is true? a. Light detection is initiated by the absorbance of light (a photon) by a photopigment molecule. b. Light detection is synonomous with vision. c. Light detection is always initiated in a rod photoreceptor located in the retina. d. Only light in the visible range (between 400 and 700 nm wavelength) can be detected by animals. e. None of the above answer choices (neither A, nor B, nor C, nor D) is true.
Which of the following statements about photoreceptors is true? A) There are more rod cells in the fovea of the eye, although overall there are more cones in the human eye. B) All of these options C) Photoreceptors are located near the front of the eye, in the cornea. D) There are two types of photoreceptors, rods and cones, that contain different photopigments.
The retina.____ are the only light sensitive cells used for vision and the________ are the only output cells to the brain in the A. rod and cone photoreceptors ganglion cells B. rod photoreceptors; bipolar cells C. cone photoreceptors; ganglion cells D. rod and cone photoreceptors; bipolar cells E. rod photoreceptors; horizontal cells ___ are the only output cells to the brain in the
Each of the following statements is false. Correct each statement to make it true. a. Activation of rhodopsin depolarizes photoreceptors. b. Activated rhodopsin activates transducin which deactivates cGMP phosphodiesterase. c. Cyclic GMP binds sodium channels, keeping them open, leading to the depolarization of photoreceptor in light.
A device that monitors the activity of the photoreceptor cells of the eye indicates that there is a constant flow of neurotransmitter being released by the photoreceptor cells. This information implies that the subject is a. reading. b. in a dark room. c. outside in sunlight. d. in a brightly lit auditorium. e. focusing on a distant object.
The order in which the cells in the eye process light is __________. A) photoreceptors; ganglion cells; bipolar cells B) ganglion cells; bipolar cells; photoreceptors C) photoreceptors; bipolar cells; ganglion cells D) bipolar cells; photoreceptors; ganglion cells
When a person blinks, the part of the brain that interprets visual stimulation is suppressed. The spontaneous act of blinking is controlled by the area of the brain that controls involuntary movements such as breathing and blood pressure. To determine whether the lack of light or the act of blinking causes the suppression, scientists had subjects close their eyes and then placed a bright flashing light in their mouth to stimulate the photoreceptors in the eyes through the palate. Visual stimulation was still suppressed. So the photoreceptors in the retina were not stimulated even though they were exposed to light. This study demonstrated that when a person blinks, it is the act of blinking and not the absence of light that causes the suppression of visual stimulation. In the diagram above, identify the part of the brain that is suppressed during blinking and the part of the brain that controls involuntary, spontaneous blinking. Select one: a. 3 and 8 b. 2 and 9 c. 5 and 6 d. 1…
1.) The rods absorb light and initiate a neural impulse to the brain when. A.) rhodopsin splits into retinal and opsin thereby stopping the release of an inhibitory neurotransmitter B.) retinal and opsin combine into rhodopsin thereby releasing a stimulatory neurotransmitter C.) iodopsin splits into photopsin and retinal thereby stopping the release of an inhibitory neurotransmitter D.) retinal and photopsin combine into iodopsin thereby releasing a stimulatory neurotransmitter 2.) After a neuronal membrane has become depolarized its resting potential is reestablished when A.) Na^ + diffuse into the neural fibre B.) Na^ + diffuse out the neural fibre. C.) K^ + diffuse into the neural fibre D.) K^ + diffuse out the neural fibre 3.) The middle car chamber is an airfilled in the head"which is adapted to allow free movement of the tympanum as it vibrates. Unless the pressure in the chamber…
Which of these photoreceptor cells do not match their function? a) rods - night vision b) stavar - sharp-sighted c) drops - color vision d) No answer text provided.
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 membrane
5. My cat Mia has poor color vision, but can see very well in dark environments. What characteristic of her retina could best explain this? a. It mostly has ON bipolar cells b. It mostly has OFF bipolar cells c. It has many more rods than cones, particularly around the fovea d. It has many more cones than rods, particularly around the fovea e. It has very few photoreceptors and many more retinal ganglion cells

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		the amplitude of the action potential increases.
		the amplitude of the action potential decreases.
		the amplitude of the action potential may increase or decrease, depending on the stimulus.
		the rate of firing of the nerve fiber increases.

		increases; decreases
		increases; increases
		decreases; decreases
		decreases; increases