PCAT Anatomy 2 — Questions and Answers
Question 1: Which structure passes through the carpal tunnel along with the flexor tendons?
- Ulnar nerve
- Median nerve (Correct answer)
- Radial nerve
- Musculocutaneous nerve
Correct answer: Median nerve
The median nerve passes through the carpal tunnel, and its compression causes carpal tunnel syndrome.
Question 2: The sinoatrial (SA) node is located in which chamber of the heart?
- Left atrium
- Right ventricle
- Left ventricle
- Right atrium (Correct answer)
Correct answer: Right atrium
The SA node is located in the wall of the right atrium near the opening of the superior vena cava.
Question 3: Which muscle is the primary flexor of the hip joint?
- Gluteus maximus
- Iliopsoas (Correct answer)
- Rectus femoris
- Sartorius
Correct answer: Iliopsoas
The iliopsoas, composed of the iliacus and psoas major, is the most powerful flexor of the hip joint.
Question 4: What type of epithelium lines the inner surface of blood vessels?
- Simple cuboidal
- Simple columnar
- Stratified squamous
- Simple squamous (Correct answer)
Correct answer: Simple squamous
The endothelium lining blood vessels is simple squamous epithelium, facilitating diffusion and reducing friction.
Question 5: The thoracic duct drains lymph into which blood vessel?
- Superior vena cava
- Left subclavian vein (Correct answer)
- Right subclavian vein
- Aorta
Correct answer: Left subclavian vein
The thoracic duct empties lymph from most of the body into the left subclavian vein at its junction with the left internal jugular vein.
Question 6: Which lobe of the liver is the largest?
- Left lobe
- Caudate lobe
- Quadrate lobe
- Right lobe (Correct answer)
Correct answer: Right lobe
The right lobe is the largest lobe of the liver, making up approximately 60-65% of the liver's mass.
Question 7: The lamina propria is a component of which tissue layer in hollow organs?
- Mucosa (Correct answer)
- Submucosa
- Muscularis externa
- Serosa
Correct answer: Mucosa
The lamina propria is a layer of loose connective tissue that lies beneath the epithelium and is part of the mucosa.
PCAT Anatomy 2
Which structure passes through the carpal tunnel along with the flexor tendons?