Question 1

What is the direction of sodium ion flow through sodium channels in a photoreceptor cell in the dark?

Accepted Answer

A)  from the cytoplasm into the extracellular space
B)  from the smooth endoplasmic reticulum into the cytosol
C)  from the extracellular space into the cytoplasm
D)  from vesicles into the synapseE) A) and C)
F) A) and B)

Question 2

Which portion of the forebrain regulates the endocrine system and body temperature?

Accepted Answer

A)  cerebrum
B)  thalamus
C)  limbic system
D)  hypothalamusE) B) and C)
F) All of the above

Question 3

Which of the following statements is TRUE regarding the microvilli of taste buds?

Accepted Answer

A)  They contain the cell bodies of gustatory sensory neurons.
B)  They house membrane receptors that recognize chemicals in food.
C)  They limit the surface area of the tongue.
D)  They are extensions of supporting cells rather than gustatory sensory neurons.
E)  None of the answer options is correct.F) A) and B)
G) A) and E)

Question 4

A transduced visual signal is transmitted from the photoreceptor cells to the bipolar cells to the ganglion cells in the retina. However, there are two additional layers of cells that make up the retina: amacrine and horizontal cells. What is their function?

Accepted Answer

A)  to process information across photoreceptive fields of the retina, enhancing contrast and motion detection
B)  to compare the input of the different cones so that we detect color
C)  to ensure that the image projected to the brain is a point-to-point record of photoreceptor activation
D)  They are evolutionary remnants with no known function.E) None of the above
F) A) and B)

Question 5

Under conditions of resting membrane potential, the inside of the cell is _____ charged with respect to the outside, and when an action potential is generated, the inside becomes _____ with respect to the outside of the cell.

Accepted Answer

A)  negatively; even more negative
B)  negatively; positive
C)  positively; negative
D)  positively; hyperpolarizedE) C) and D)
F) B) and C)

Question 6

A researcher is studying a mouse strain having the characteristic that exposure to light results in the depolarization of photoreceptors. Mice of this strain have normally functioning photoreceptors, and would respond to changes in light.

Accepted Answer

A) True 
 B)False

Question 7

Rod and cone photoreceptor cells synapse with:

Accepted Answer

A)  the optic neuron.
B)  bipolar cells.
C)  ganglion cells.
D)  amacrine cells.E) None of the above
F) C) and D)

Question 8

Which of the following is the opening in the eye through which light passes?

Accepted Answer

A)  cornea
B)  iris
C)  lens
D)  pupilE) All of the above
F) A) and B)

Question 9

A taste bud is made up of:

Accepted Answer

A)  chemoreceptors.
B)  thermoreceptors.
C)  mechanoreceptors.
D)  gustoreceptors.E) None of the above
F) All of the above

Question 10

Where are amacrine cells found?

Accepted Answer

A)  in the layer of tissue with rods and cones
B)  interspersed among the ganglion cells
C)  in the bipolar layer of the retina
D)  in the visual cortex of the brainE) All of the above
F) A) and B)

Question 11

A young boy discovers that he is color blind, and cannot perceive green or red colors. He likely carries a mutation in which of the following?

Accepted Answer

A)  genes involved in cone cell development
B)  genes involved in rod cell development
C)  genes involved in both cone and rod cell developmentD) B) and C)
E) All of the above

Question 12

The gray matter on the outside of the brain appears gray because:

Accepted Answer

A)  the neurons are not myelinated.
B)  the neurons are protected by something other than myelin that makes it appear gray.
C)  the neuronal cell bodies are located here.
D)  all dendrites in the brain are located there.E) All of the above
F) None of the above

Question 13

A(n)  _____ is another name for the ligand that binds to an olfactory sensory neuron.

Accepted Answer

A)  smell
B)  odorant molecule
C)  volatile molecule
D)  aromatic moleculeE) B) and C)
F) A) and B)

Question 14

What part of the olfactory sensory neuron is located in the olfactory epithelium?

Accepted Answer

A)  dendrites
B)  the cell body
C)  axons
D)  interneuronsE) A) and D)
F) A) and C)

Question 15

Which of the following is the tough, white outer covering of the eye?

Accepted Answer

A)  sclera
B)  lens
C)  pupil
D)  retinaE) A) and B)
F) A) and D)

Question 16

Which receptor is associated with the perception of pain?

Accepted Answer

A)  thermoreceptor
B)  chemoreceptor
C)  nociceptor
D)  photoreceptorE) A) and B)
F) B) and D)

Question 17

Which one of the following choices contains structures found in the hindbrain?

Accepted Answer

A)  cerebral cortex
B)  cerebellum and pons
C)  limbic system
D)  thalamus and hypothalamusE) None of the above
F) A) and B)

Question 18

Which portion of the limbic system is involved in forming memories?

Accepted Answer

A)  thalamus
B)  hypothalamus
C)  hippocampus
D)  amygdalaE) A) and B)
F) A) and C)

Question 19

Which of the following are the deep crevices of the brain surface that separate the different lobes of the brain?

Accepted Answer

A)  topographical features
B)  cortexes
C)  sulci
D)  thalamusE) A) and B)
F) B) and D)

Question 20

Which of the following is the outer layer of gray matter found in the cerebrum?

Accepted Answer

A)  cerebral cortex
B)  central sulcus
C)  limbic system
D)  temporal lobeE) A) and C)
F) B) and C)

Exam 36: Animal Sensory Systems and Brain Function

Which one of the following choices contains structures found in the hindbrain?

Correct AnswerverifiedShow Answer

A researcher is studying a mouse strain having the characteristic that exposure to light results in the depolarization of photoreceptors. Mice of this strain have normally functioning photoreceptors, and would respond to changes in light.

Correct AnswerverifiedShow Answer

The gray matter on the outside of the brain appears gray because:

Correct AnswerverifiedShow Answer

Which of the following are the deep crevices of the brain surface that separate the different lobes of the brain?

Correct AnswerverifiedShow Answer

Where are amacrine cells found?

Correct AnswerverifiedShow Answer

Which of the following is the outer layer of gray matter found in the cerebrum?

Correct AnswerverifiedShow Answer

Which of the following statements is TRUE regarding the microvilli of taste buds?

Correct AnswerverifiedShow Answer

A taste bud is made up of:

Correct AnswerverifiedShow Answer

Which portion of the limbic system is involved in forming memories?

Correct AnswerverifiedShow Answer

Which portion of the forebrain regulates the endocrine system and body temperature?

Correct AnswerverifiedShow Answer

What part of the olfactory sensory neuron is located in the olfactory epithelium?

Correct AnswerverifiedShow Answer

Which of the following is the opening in the eye through which light passes?

Correct AnswerverifiedShow Answer

What is the direction of sodium ion flow through sodium channels in a photoreceptor cell in the dark?

Correct AnswerverifiedShow Answer

A young boy discovers that he is color blind, and cannot perceive green or red colors. He likely carries a mutation in which of the following?

Correct AnswerverifiedShow Answer

A transduced visual signal is transmitted from the photoreceptor cells to the bipolar cells to the ganglion cells in the retina. However, there are two additional layers of cells that make up the retina: amacrine and horizontal cells. What is their function?

Correct AnswerverifiedShow Answer

Rod and cone photoreceptor cells synapse with:

Correct AnswerverifiedShow Answer

Which of the following is the tough, white outer covering of the eye?

Correct AnswerverifiedShow Answer

A(n) _____ is another name for the ligand that binds to an olfactory sensory neuron.

Correct AnswerverifiedShow Answer

Under conditions of resting membrane potential, the inside of the cell is _____ charged with respect to the outside, and when an action potential is generated, the inside becomes _____ with respect to the outside of the cell.

Correct AnswerverifiedShow Answer

Which receptor is associated with the perception of pain?

Correct AnswerverifiedShow Answer

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Under conditions of resting membrane potential, the inside of the cell is _ charged with respect to the outside, and when an action potential is generated, the inside becomes _ with respect to the outside of the cell.

Correct Answer
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Correct Answer
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