Anatomy and Physiology 2
MODULE 4 EXAM
Actual Questions and Verified Answers
Portage Learning
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Learning Module 4 exam
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,1. Which body system supplies cells with oxygen and nutrients
and carries away waste?
*(multiple-choice)*
A. Respiratory system
B. Circulatory system
C. Digestive system
D. Nervous system
Correct Answer: B. Circulatory system
Rationale: The circulatory system transports oxygen and nutrients to cells
and removes cellular waste products, ensuring efficient tissue function
(Portage Learning A&P 2, module 4).
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2. The pericardial cavity contains the:
*(multiple-choice)*
A. Lungs
B. Heart
C. Liver
D. Stomach
Correct Answer: B. Heart
Rationale: The pericardial cavity is the potential space within the
pericardium that encloses the heart, providing lubrication for heart
movement.
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3. Which layer of the heart anchors it to the diaphragm? *(multiple-
choice)*
A. Endocardium
B. Mediastinal
C. Myocardium
D. Pericardium
Correct Answer: D. Pericardium
Rationale: The fibrous pericardium anchors the heart to surrounding
structures, including the diaphragm, stabilizing its position.
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4. What is the purpose of the fossa ovalis in a fetus?
Answer: It allows fetal blood to move directly from the right to left atrium,
bypassing the undeveloped lungs. The fossa ovalis closes after birth,
enabling blood to be oxygenated in the lungs.
Rationale: In fetal circulation, the fossa ovalis (foramen ovale) functions
as a shortcut for blood, which is redirected once the lungs become
operational post-birth.
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, 5. Label the figure below A-E:
A: Superior Vena Cava
B: Right Atrium
C: Tricuspid (Right AV) Valve
D: Left Ventricle
E: Pulmonary Valve
Rationale: These anatomical landmarks correspond to major components
for venous return, chamber location, valve function, and blood outflow
from the heart.