DOH Anatomy & Physiology

Question 1

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

Accepted Answer

Right atrium

Answer

Left ventricle

Answer

Left atrium

Answer

Right ventricle

Question 2

Which lobe of the lung is supplied solely by the middle lobar bronchus?

Accepted Answer

Right middle lobe

Answer

Right upper lobe

Answer

Left lower lobe

Answer

Left upper lobe

Question 3

What is the normal resting glomerular filtration rate (GFR) in a healthy adult?

Accepted Answer

90–120 mL/min

Answer

30–60 mL/min

Answer

60–89 mL/min

Answer

150–180 mL/min

Question 4

Which hormone is secreted by the beta cells of the islets of Langerhans and lowers blood glucose?

Accepted Answer

Insulin

Answer

Glucagon

Answer

Somatostatin

Answer

Cortisol

Question 5

The brachial plexus originates from which spinal cord levels?

Accepted Answer

C5–T1

Answer

C1–C4

Answer

T1–T4

Answer

L1–L5

Question 6

Which part of the nephron is primarily responsible for reabsorption of glucose under normal physiological conditions?

Accepted Answer

Proximal convoluted tubule

Answer

Loop of Henle

Answer

Distal convoluted tubule

Answer

Collecting duct