Question 1

Which of the following best explains why edema is prevented under normal physiological conditions in capillary beds?

Accepted Answer

Lymphatic capillaries collect excess interstitial fluid not reabsorbed by blood capillaries and return it to the bloodstream.

Question 2

A patient presents with muscle weakness and is diagnosed with a disorder affecting the neuromuscular junction (NMJ). Which step in the process of skeletal muscle contraction is most likely impaired?

Accepted Answer

Binding of acetylcholine (ACh) to receptors on the sarcolemma

Question 3

Which of the following glial cells is responsible for forming the myelin sheath in the peripheral nervous system (PNS)?

Accepted Answer

Schwann cells

Question 4

A 12-year-old patient is diagnosed with osteosarcoma. Which of the following statements about this condition is correct?

Accepted Answer

It is a cancer that typically affects children and young adults and can metastasize to other organs.

Question 5

Which of the following bones is formed primarily through intramembranous ossification?

Accepted Answer

Mandible

Question 6

A patient with atherosclerosis is at increased risk for which of the following complications due to the pathophysiology of the disease?

Accepted Answer

Heart attack due to plaque rupture and clot formation

Question 7

Which of the following best describes the location and function of red bone marrow in adults?

Accepted Answer

Located in spongy bone, especially in flat bones and the ends of long bones; site of hematopoiesis

Question 8

Which of the following is the correct sequence of connective tissue layers from the outermost to the innermost in a skeletal muscle?

Accepted Answer

Epimysium, perimysium, endomysium

Question 9

A patient with hydrocephalus is found to have a blockage in the flow of cerebrospinal fluid (CSF). Where is CSF primarily produced, and where is it normally absorbed?

Accepted Answer

Produced by the choroid plexus in the ventricles; absorbed by arachnoid villi into the dural sinuses

Question 10

Which cranial nerve is responsible for innervating the muscles of facial expression (mimetic muscles)?

Accepted Answer

CN VII (Facial)

Question 11

A bacterial infection on the upper lip spreads to the cavernous sinus. What is the most serious potential consequence of this spread?

Accepted Answer

Encephalitis or meningitis due to infection reaching the brain

Question 12

Which of the following best describes the structural organization of a nerve?

Accepted Answer

A bundle of axons surrounded by epineurium, with fascicles surrounded by perineurium, and individual axons by endoneurium

Question 13

Which of the following is a paired bone of the skull?

Accepted Answer

Parietal bone

Question 14

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

Accepted Answer

Relay of sensory information to the cerebral cortex

Question 15

A patient with Horner’s syndrome presents with ptosis, miosis, and anhidrosis. Which part of the nervous system is primarily affected?

Accepted Answer

Sympathetic nervous system

Question 16

Which of the following best explains why compact bone is found in the shaft of long bones?

Accepted Answer

It provides strength and support to withstand the stress of weight-bearing.

Question 17

Which of the following is the correct order of events at the neuromuscular junction leading to muscle contraction?

Accepted Answer

ACh binds to receptors → action potential in muscle fiber → calcium release → actin-myosin binding

Question 18

Which of the following best describes the function of a lymph node?

Accepted Answer

It filters lymph fluid, removing pathogens and debris, and houses immune cells.

Question 19

Which of the following is a function of the cerebellum?

Accepted Answer

Coordination of balance and fine motor control

Question 20

Which of the following best describes the difference between multipolar, bipolar, and unipolar neurons?

Accepted Answer

Multipolar neurons have many dendrites and one axon; bipolar neurons have one dendrite and one axon; unipolar neurons have a single process that splits into two branches.

Comprehensive Study Notes for Human Anatomy & Physiology (ANP) College Course

Study Guide - Practice Questions

Study Guide - Flashcards