BHS Anatomy and Physiology 2

Question 1

Which type of muscle tissue is under voluntary control and has striated appearance?

Accepted Answer

Skeletal muscle

Answer

Skeletal muscle is attached to bones, striated in appearance, and under voluntary (somatic) control.

Question 2

The sinoatrial (SA) node is located in which chamber of the heart?

Accepted Answer

Right atrium

Answer

The SA node, the heart's primary pacemaker, is located in the posterior wall of the right atrium.

Question 3

Which hormone is responsible for stimulating the reabsorption of sodium in the renal tubules?

Accepted Answer

Aldosterone

Answer

Aldosterone, secreted by the adrenal cortex, promotes Na⁺ reabsorption in the distal convoluted tubule and collecting duct.

Question 4

The process by which cells engulf large particles or microorganisms is called:

Accepted Answer

Phagocytosis

Answer

Phagocytosis ('cell eating') is the process by which cells engulf solid particles, bacteria, or cell debris.

Question 5

Which bone forms the posterior portion of the hard palate?

Accepted Answer

Palatine bone

Answer

The palatine bones form the posterior one-third of the hard palate, while the maxillae form the anterior two-thirds.

BHS - Bachelor of Health Science Practice Test