Navy Hospital Corpsman,
HCB Test 2
1. Which body plane divides the body into right and left halves?
Answer: Sagittal plane
Rationale: The sagittal plane runs vertically and divides the body into right/left
portions. The midsagittal plane divides exactly in half.
2. What type of tissue covers body surfaces and lines internal organs?
Answer: Epithelial tissue
Rationale: Epithelial tissue forms protective coverings and lines cavities.
3. Which organ is primarily responsible for detoxification of harmful substances?
Answer: Liver
Rationale: The liver metabolizes toxins, drugs, and wastes.
4. What is the primary function of red blood cells (RBCs)?
Answer: Transport oxygen via hemoglobin
Rationale: Hemoglobin binds oxygen and delivers it to tissues.
5. The sinoatrial (SA) node is known as the heart’s “pacemaker” because it:
, Answer: Initiates electrical impulses that regulate the heartbeat.
6. Which cranial nerve is responsible for smell?
Answer: Olfactory nerve (Cranial Nerve I)
7. The correct anatomical term for the front (belly side) of the body is:
Answer: Anterior or ventral
8. Which type of joint allows for the greatest range of motion?
Answer: Ball-and-socket joint (e.g., shoulder, hip)
9. The process of white blood cells engulfing and destroying pathogens is called:
Answer: Phagocytosis
10. What is the normal adult respiratory rate?
Answer: 12–20 breaths per minute
11. Which type of muscle is found in the walls of blood vessels and organs?
Answer: Smooth muscle
12. Hypoglycemia refers to:
Answer: Low blood glucose levels
13. The primary function of platelets is to:
HCB Test 2
1. Which body plane divides the body into right and left halves?
Answer: Sagittal plane
Rationale: The sagittal plane runs vertically and divides the body into right/left
portions. The midsagittal plane divides exactly in half.
2. What type of tissue covers body surfaces and lines internal organs?
Answer: Epithelial tissue
Rationale: Epithelial tissue forms protective coverings and lines cavities.
3. Which organ is primarily responsible for detoxification of harmful substances?
Answer: Liver
Rationale: The liver metabolizes toxins, drugs, and wastes.
4. What is the primary function of red blood cells (RBCs)?
Answer: Transport oxygen via hemoglobin
Rationale: Hemoglobin binds oxygen and delivers it to tissues.
5. The sinoatrial (SA) node is known as the heart’s “pacemaker” because it:
, Answer: Initiates electrical impulses that regulate the heartbeat.
6. Which cranial nerve is responsible for smell?
Answer: Olfactory nerve (Cranial Nerve I)
7. The correct anatomical term for the front (belly side) of the body is:
Answer: Anterior or ventral
8. Which type of joint allows for the greatest range of motion?
Answer: Ball-and-socket joint (e.g., shoulder, hip)
9. The process of white blood cells engulfing and destroying pathogens is called:
Answer: Phagocytosis
10. What is the normal adult respiratory rate?
Answer: 12–20 breaths per minute
11. Which type of muscle is found in the walls of blood vessels and organs?
Answer: Smooth muscle
12. Hypoglycemia refers to:
Answer: Low blood glucose levels
13. The primary function of platelets is to:
