Question 1

Which of the following best describes the primary function of the medulla oblongata within the brainstem?

Accepted Answer

It regulates vital autonomic functions such as heart rate, blood pressure, and respiration.

Question 2

A patient presents with difficulty forming new memories after a traumatic brain injury. Which structure is most likely damaged?

Accepted Answer

Hippocampus

Question 3

Which of the following best explains how tonic and phasic receptors respond to a continuous stimulus?

Accepted Answer

Tonic receptors maintain a sustained response, while phasic receptors adapt rapidly and decrease their response.

Question 4

Which of the following is the correct sequence for the transmission of sound from the cochlea to the auditory cortex?

Accepted Answer

Cochlea → Vestibulocochlear nerve → Inferior colliculus → Medial geniculate nucleus → Auditory cortex

Question 5

Which of the following best describes the role of the thalamus within the diencephalon?

Accepted Answer

It acts as a relay station for sensory information traveling to the cerebral cortex.

Question 6

A patient is unable to comprehend spoken or written language but can produce fluent, nonsensical speech. Which brain area is most likely damaged?

Accepted Answer

Wernicke’s area

Question 7

Which of the following is a peptide hormone, and where are its receptors typically located?

Accepted Answer

Insulin; on the cell membrane

Question 8

Which of the following best describes the process of sensory transduction?

Accepted Answer

The conversion of a physical stimulus into a change in membrane potential in a sensory receptor.

Question 9

Which of the following is TRUE regarding the sympathetic and parasympathetic branches of the autonomic nervous system?

Accepted Answer

Sympathetic postganglionic neurons primarily release norepinephrine, while parasympathetic postganglionic neurons release acetylcholine.

Question 10

Which of the following best describes the function of the basal ganglia?

Accepted Answer

It initiates and regulates voluntary motor movements and works with the cerebellum to coordinate movement.

Question 11

Which of the following is the correct order for the pathway of visual information from the retina to the visual cortex?

Accepted Answer

Retina → Optic nerve → Optic chiasm → Optic tract → Lateral geniculate nucleus → Visual cortex

Question 12

Which of the following best describes the difference in hormone receptor location and mechanism of action between peptide and steroid hormones?

Accepted Answer

Peptide hormones bind to cell surface receptors and activate second messengers; steroid hormones bind to intracellular receptors and alter gene expression.

Question 13

Which of the following is a correct example of long-loop negative feedback in the endocrine system?

Accepted Answer

High cortisol levels inhibit the release of corticotropin-releasing hormone (CRH) from the hypothalamus.

Question 14

Which of the following best describes the role of the adrenal medulla?

Accepted Answer

It acts as a modified sympathetic ganglion and secretes epinephrine and norepinephrine into the blood.

Question 15

Which of the following is NOT a function of the hypothalamus?

Accepted Answer

Relay of sensory information to the cerebral cortex

Question 16

Which of the following best describes the cellular mechanism of action of a hormone?

Accepted Answer

A hormone binds to its receptor and triggers a specific cellular response, such as altering enzyme activity or gene expression.

Question 17

Which of the following is the correct sequence for the synthesis and breakdown of norepinephrine in the autonomic nervous system?

Accepted Answer

Tyrosine → DOPA → Dopamine → Norepinephrine; breakdown by monoamine oxidase (MAO)

Question 18

Which of the following best describes the structure and function of the neuromuscular junction?

Accepted Answer

A synapse between a motor neuron and a skeletal muscle fiber where acetylcholine is released to trigger muscle contraction.

Question 19

Which of the following is a correct pairing of an anterior pituitary hormone, its hypothalamic releasing hormone, and its primary target?

Accepted Answer

Adrenocorticotropic hormone (ACTH); corticotropin-releasing hormone (CRH); adrenal cortex

Anatomy & Physiology: Nervous, Sensory, and Endocrine Systems Study Guidance

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