Question 1

Which of the following best describes the anatomical position used as a reference in human anatomy?

Accepted Answer

Standing upright, facing forward, arms at the sides with palms facing forward

Question 2

A patient is experiencing muscle weakness due to a disruption in the neuromuscular junction. Which of the following best explains the process of muscle contraction at this site?

Accepted Answer

Acetylcholine is released from the motor neuron, binds to receptors on the muscle fiber, leading to depolarization and subsequent contraction

Question 3

Which of the following equations correctly represents the relationship between pH and hydrogen ion concentration $$[H^+] in $$body fluids?

Accepted Answer

$$pH = -\log_{10} [H^+]$$

Question 4

A child presents with delayed bone growth and frequent fractures. Which of the following best explains the role of osteoblasts in bone development?

Accepted Answer

Osteoblasts are responsible for synthesizing new bone matrix and promoting bone growth

Question 5

Which of the following best describes the difference between simple and stratified epithelial tissue?

Accepted Answer

Simple epithelium has a single layer of cells, while stratified epithelium has multiple layers

Question 6

A patient with a burn injury has lost the protective function of the skin. Which of the following is NOT a function of the skin?

Accepted Answer

Production of red blood cells

Question 7

Which of the following best explains the function of the sodium-potassium pump in maintaining cellular homeostasis?

Accepted Answer

It actively transports $$3$$ sodium ions out of the cell and $$2$$ potassium ions into the cell, using ATP

Question 8

A patient is diagnosed with osteoporosis. Which of the following best describes the imbalance in bone remodeling that leads to this condition?

Accepted Answer

Bone resorption by osteoclasts exceeds bone formation by osteoblasts

Question 9

Which of the following best describes the role of mitochondria in the cell?

Accepted Answer

They produce ATP through aerobic respiration

Question 10

A patient is unable to sweat and is experiencing overheating. Which layer of the skin contains the sweat glands responsible for thermoregulation?

Accepted Answer

Dermis

Question 11

Which of the following best describes the function of the sarcomere in skeletal muscle contraction?

Accepted Answer

It is the functional unit where actin and myosin filaments slide past each other to shorten the muscle

Question 12

A patient has a spinal cord injury at the level of the cervical vertebrae. Which of the following functions is most likely to be affected?

Accepted Answer

Voluntary movement of the upper and lower limbs

Question 13

Which of the following best describes the difference between the central nervous system (CNS) and the peripheral nervous system (PNS)?

Accepted Answer

The CNS consists of the brain and spinal cord, while the PNS includes all nerves outside the CNS

Question 14

A patient is unable to flex their elbow after an injury. Which type of synovial joint is primarily responsible for this movement?

Accepted Answer

Hinge joint

Question 15

Which of the following best explains the process of endochondral ossification in bone development?

Accepted Answer

Bone tissue replaces a cartilage model during fetal development and childhood

Question 16

A patient with a genetic mutation affecting the sodium channels in neurons is likely to experience which of the following symptoms?

Accepted Answer

Impaired transmission of action potentials

Question 17

Which of the following best describes the function of the rough endoplasmic reticulum (RER) in a cell?

Accepted Answer

It synthesizes proteins that are exported from the cell or inserted into the cell membrane

Question 18

A patient is diagnosed with a disorder affecting the synovial membrane. Which of the following is a function of the synovial membrane in a joint?

Accepted Answer

It secretes synovial fluid to lubricate the joint

Question 19

Which of the following best describes the function of the axon in a neuron?

Accepted Answer

It conducts electrical impulses away from the cell body toward other neurons or effectors

Question 20

A patient is experiencing symptoms of dehydration. Which of the following best explains the movement of water across a cell membrane?

Accepted Answer

Water moves by osmosis from an area of low solute concentration to an area of high solute concentration

Anatomy & Physiology I: Course Overview and Foundational Concepts

Guida di studio - Domande di pratica

Study guide - Flashcard