CABT Anatomy and Physiology Fundamentals 5

Question 1

Which type of muscle tissue is involuntary, striated, and found only in the heart?

Accepted Answer

Cardiac muscle

Answer

Cardiac muscle is uniquely involuntary and striated, with intercalated discs that allow electrical coupling between cells for coordinated contraction.

Question 2

What is the anatomical term for the small bone at the tip of the sternum that serves as an attachment for the diaphragm?

Accepted Answer

Xiphoid process

Answer

The xiphoid process is the inferior-most part of the sternum and serves as an attachment point for the diaphragm and some abdominal muscles.

Question 3

Which fluid compartment contains approximately two-thirds of total body water in an adult?

Accepted Answer

Intracellular fluid

Answer

Intracellular fluid (ICF) accounts for about 67% of total body water (~28 L in a 70 kg adult), found within all body cells.

Question 4

During a surgical procedure requiring laparotomy, the surgeon identifies the retroperitoneal organs. Which of the following is a retroperitoneal organ?

Accepted Answer

Kidneys

Answer

The kidneys are retroperitoneal, lying behind the peritoneum against the posterior abdominal wall, unlike most abdominal organs covered by peritoneum.

Question 5

Which reflex arc component converts a stimulus into an electrical nerve impulse?

Accepted Answer

Receptor

Answer

Receptors are specialized sensory structures that detect stimuli and transduce them into electrical signals (action potentials) that travel along afferent neurons.

(CABT) Certified Associate in Biomedical Technology Practice Test

(CABT) Certified Associate in Biomedical Technology Practice Test

CABT Anatomy and Physiology Fundamentals 5