COC Anatomy and Pathophysiology for Coding

Question 1

Which structure of the heart is responsible for initiating the electrical impulse that triggers each heartbeat?

Accepted Answer

Sinoatrial (SA) node

Answer

Atrioventricular (AV) node

Answer

Bundle of His

Answer

Purkinje fibers

Question 2

Atherosclerosis refers to the buildup of which substance within arterial walls?

Accepted Answer

Plaque (lipids, calcium, and fibrous tissue)

Answer

Blood clots (thrombi)

Answer

Excess fluid (edema)

Answer

Scar tissue from healed infarctions

Question 3

The nephron is the functional unit of which organ?

Accepted Answer

Kidney

Answer

Liver

Answer

Lung

Answer

Spleen

Question 4

Type 2 diabetes mellitus is primarily characterized by:

Accepted Answer

Insulin resistance and relative insulin deficiency

Answer

Absolute insulin deficiency due to autoimmune destruction

Answer

Overproduction of glucagon only

Answer

Hypersecretion of insulin leading to hypoglycemia

Question 5

Which lung lobe is the most common site for aspiration pneumonia in a supine patient?

Accepted Answer

Right lower lobe (posterior segment)

Answer

Left upper lobe

Answer

Right middle lobe

Answer

Left lower lobe

Question 6

The rotator cuff of the shoulder consists of which four muscles?

Accepted Answer

Supraspinatus, infraspinatus, teres minor, subscapularis

Answer

Deltoid, biceps, triceps, pectoralis

Answer

Trapezius, rhomboid, serratus, latissimus dorsi

Answer

Supraspinatus, infraspinatus, teres major, subscapularis