Question 1

Which of the following best describes the primary function of the diaphysis in a long bone?

Accepted Answer

It acts as the main shaft, providing structural support and housing the medullary cavity.

Question 2

A patient presents with abnormally high blood calcium levels. Which hormone is most likely elevated, and what is its effect on bone?

Accepted Answer

Calcitonin; increases bone matrix deposition

Question 3

Which structure is responsible for the production of new bone matrix during bone growth and repair?

Accepted Answer

Osteoblast

Question 4

During endochondral ossification, what is the sequence of events for the formation of a long bone?

Accepted Answer

Ossification begins in the diaphysis, followed by the epiphyses.

Question 5

Which of the following best explains why osteoporosis increases the risk of bone fractures?

Accepted Answer

Osteoclast activity outpaces osteoblast activity, reducing bone density.

Question 6

Which connective tissue layer directly surrounds each individual muscle fiber?

Accepted Answer

Endomysium

Question 7

A muscle contraction is initiated when calcium ions bind to which protein on the thin filament?

Accepted Answer

Troponin

Question 8

Which of the following best describes the role of acetylcholinesterase (AChE) at the neuromuscular junction?

Accepted Answer

It breaks down acetylcholine, terminating the muscle contraction signal.

Question 9

Which of the following is true regarding the difference between the sympathetic and parasympathetic divisions of the autonomic nervous system?

Accepted Answer

The sympathetic division prepares the body for 'fight or flight' responses.

Question 10

Which neuroglial cell is responsible for forming the myelin sheath in the central nervous system (CNS)?

Accepted Answer

Oligodendrocyte

Question 11

A patient has a tumor in the pituitary gland causing excessive growth hormone secretion after puberty. Which condition is most likely to develop?

Accepted Answer

Acromegaly

Question 12

Which of the following best describes the mechanism of action for steroid hormones?

Accepted Answer

They bind to receptors inside the nucleus and activate transcription of new proteins.

Question 13

Which of the following is a correct sequence of events in a monosynaptic reflex arc?

Accepted Answer

Receptor → Sensory neuron → Motor neuron → Effector

Question 14

Which of the following best explains why the lens of the eye changes shape?

Accepted Answer

To focus light on the retina for near or distant vision

Question 15

Which type of sensory receptor is primarily responsible for detecting changes in blood pressure within arteries?

Accepted Answer

Baroreceptor

Question 16

A person with damage to the cerebellum would most likely experience which of the following symptoms?

Accepted Answer

Impaired balance and coordination

Question 17

Which hormone is released in response to low blood glucose levels and what is its primary effect?

Accepted Answer

Glucagon; stimulates glycogen breakdown in the liver

Question 18

Which of the following best describes the role of the corpus callosum in the brain?

Accepted Answer

It connects the two cerebral hemispheres, allowing communication between them.

Question 19

Which of the following is a characteristic of smooth muscle tissue?

Accepted Answer

Unstriated, single nucleus, involuntary

Question 20

Which of the following best explains why the optic disc is known as the 'blind spot'?

Accepted Answer

It is the point where the optic nerve exits and contains no photoreceptors.

Study Guide: Skeletal, Muscular, and Nervous Systems (ANP College Level)

Study Guide - Practice Questions