D313 SCIE 1012 Anatomy &
Physiology II
Final Assessment Review
(Questions & Solutions)
2025
1
, 1. Multiple Choice
Question:
During a laboratory dissection of the heart, a student notes that the
muscular wall most responsible for pumping oxygenated blood into
systemic circulation is significantly thicker than its counterpart on the
other side. Which chamber is being described?
- A. Right atrium
- B. Right ventricle
- C. Left atrium
- D. Left ventricle
Correct ANS:
D. Left ventricle
Rationale:
The left ventricle must generate high pressure to pump blood throughout
the body, resulting in a thicker myocardial wall compared with the right
ventricle, which pumps blood to the lungs.
---
2. Fill-in-the-Blank
Question:
In the pulmonary alveoli, gas exchange occurs primarily by ________
diffusion due to the extremely thin respiratory membrane.
Correct ANS:
simple
Rationale:
Simple diffusion is the primary mechanism for gas exchange in the alveoli
because oxygen and carbon dioxide pass directly through the thin
2
, alveolar–capillary barrier.
---
3. True/False
Question:
Pulmonary surfactant, secreted by type II pneumocytes, functions to
decrease alveolar surface tension.
Correct ANS:
True
Rationale:
Surfactant reduces surface tension in the alveoli, preventing collapse
during exhalation and thereby facilitating efficient gas exchange—a key
concept for understanding respiratory physiology.
---
4. Multiple Response
Question:
Which of the following structures belong to the lymphatic system and
also play central roles in immune defense? (Select all that apply)
- A. Lymph nodes
- B. Spleen
- C. Thymus
- D. Peyer’s patches
- E. Adrenal gland
Correct ANSs:
A, B, C, D
Rationale:
Lymph nodes, the spleen, thymus, and Peyer’s patches are integral to
both lymphatic drainage and the immune response. The adrenal gland,
3
Physiology II
Final Assessment Review
(Questions & Solutions)
2025
1
, 1. Multiple Choice
Question:
During a laboratory dissection of the heart, a student notes that the
muscular wall most responsible for pumping oxygenated blood into
systemic circulation is significantly thicker than its counterpart on the
other side. Which chamber is being described?
- A. Right atrium
- B. Right ventricle
- C. Left atrium
- D. Left ventricle
Correct ANS:
D. Left ventricle
Rationale:
The left ventricle must generate high pressure to pump blood throughout
the body, resulting in a thicker myocardial wall compared with the right
ventricle, which pumps blood to the lungs.
---
2. Fill-in-the-Blank
Question:
In the pulmonary alveoli, gas exchange occurs primarily by ________
diffusion due to the extremely thin respiratory membrane.
Correct ANS:
simple
Rationale:
Simple diffusion is the primary mechanism for gas exchange in the alveoli
because oxygen and carbon dioxide pass directly through the thin
2
, alveolar–capillary barrier.
---
3. True/False
Question:
Pulmonary surfactant, secreted by type II pneumocytes, functions to
decrease alveolar surface tension.
Correct ANS:
True
Rationale:
Surfactant reduces surface tension in the alveoli, preventing collapse
during exhalation and thereby facilitating efficient gas exchange—a key
concept for understanding respiratory physiology.
---
4. Multiple Response
Question:
Which of the following structures belong to the lymphatic system and
also play central roles in immune defense? (Select all that apply)
- A. Lymph nodes
- B. Spleen
- C. Thymus
- D. Peyer’s patches
- E. Adrenal gland
Correct ANSs:
A, B, C, D
Rationale:
Lymph nodes, the spleen, thymus, and Peyer’s patches are integral to
both lymphatic drainage and the immune response. The adrenal gland,
3
