Comprehensive Blood Flow Tracing
and Circulatory Physiology: A
Complete Review of Vascular
Pathways, Cardiac Anatomy, and
Clinical Correlates for BIOD 152 Lab 4
Q1: What is the primary function of the circulatory system?
Answer: Supply oxygen and nutrients to cells and remove waste products.
Rationale: The circulatory system transports blood carrying oxygen,
nutrients, and waste products to and from tissues throughout the body .
Q2: In which cavity is the heart located?
Answer: Pericardial cavity.
Rationale: The heart resides in the pericardial cavity within the
mediastinum of the thoracic cavity .
Q3: What structure anchors the heart to the diaphragm?
Answer: Fibrous pericardium.
Rationale: The fibrous pericardium secures the heart to surrounding
structures like the diaphragm .
Q4: What is the general pathway of blood flow through the body after
it leaves the heart?
Answer: Heart → arteries → capillaries → veins → heart.
Rationale: Blood follows a general mapping system: from the heart it flows
,through arteries, then capillaries, and comes back to the heart by way of
veins .
Q5: Which of the following are afferent vessels?
A. Pulmonary Artery
B. Pulmonary Vein
C. Ascending Aorta
D. Inferior Vena Cava
Answer: B & D (Pulmonary Vein, Inferior Vena Cava).
Rationale: Afferent vessels carry blood toward the heart. Both the
pulmonary vein and inferior vena cava return blood to the heart .
Q6: Which of the following are efferent vessels?
A. Pulmonary Artery
B. Pulmonary Vein
C. Ascending Aorta
D. Inferior Vena Cava
Answer: A & C (Pulmonary Artery, Ascending Aorta).
Rationale: Efferent vessels carry blood away from the heart. Both the
pulmonary artery and ascending aorta carry blood away from the heart .
Q7: Arteries are referred to as what type of blood vessel?
Answer: Efferent blood vessels.
Rationale: Arteries always carry blood away from the heart, making them
efferent vessels .
Q8: Veins are referred to as what type of blood vessel?
Answer: Afferent blood vessels.
Rationale: Veins bring blood back to the heart .
Q9: True or False: Arteries typically carry deoxygenated blood.
Answer: False.
,Rationale: Arteries typically carry oxygenated blood, with the pulmonary
artery being the only exception as it carries deoxygenated blood .
Q10: What exception exists to the rule that arteries carry oxygenated
blood?
Answer: The pulmonary artery.
Rationale: The pulmonary artery carries deoxygenated blood from the
heart to the lungs for oxygenation .
Q11: What percentage of blood is found in arteries at rest?
Answer: 11%.
Rationale: Approximately 11% of blood is found in arteries at rest .
Q12: What percentage of blood is found in veins at rest?
Answer: 54%.
Rationale: Veins hold approximately 54% of blood at rest, serving as a
blood reservoir .
Q13: Which vessels have lower blood pressure, arteries or veins?
Answer: Veins.
Rationale: Veins are farther away from the heart and have lower blood
pressure than arteries .
Q14: What is the correct order of blood flow through the circulatory
system?
Answer: Artery → arteriole → capillary → venule → vein.
Rationale: Blood flows from larger arteries to smaller arterioles, then to
capillaries for exchange, then to venules and larger veins to return to the
heart .
Q15: Which body system supplies cells with oxygen and nutrients and
carries away waste?
Answer: Circulatory system.
, Rationale: Other systems perform some of these functions, but only the
circulatory system carries out all of them .
Q16: What is the main difference between systemic and pulmonary
circuits?
Answer: The systemic circuit carries oxygenated blood to the body, while
the pulmonary circuit carries deoxygenated blood to the lungs for
oxygenation.
Rationale: The heart pumps blood through two circuits with different
purposes and blood types .
Q17: What type of vessels are known as "exchange vessels"?
Answer: Capillaries.
Rationale: Capillaries have thin walls and are the sites where oxygen,
glucose, and nutrients are exchanged with body tissues .
Q18: What is the function of the mitral valve?
Answer: Controls blood flow from the left atrium to the left ventricle.
Rationale: The mitral valve prevents backflow into the left atrium during
ventricular systole .
Q19: What is the function of the tricuspid valve?
Answer: Regulates blood flow from the right atrium to the right ventricle.
Rationale: The tricuspid valve ensures one-way flow during right
ventricular contraction .
Q20: What vessel carries deoxygenated blood from the heart to the
lungs?
Answer: Pulmonary artery.
Rationale: The pulmonary artery transports blood to the lungs for
oxygenation in the pulmonary circuit .
and Circulatory Physiology: A
Complete Review of Vascular
Pathways, Cardiac Anatomy, and
Clinical Correlates for BIOD 152 Lab 4
Q1: What is the primary function of the circulatory system?
Answer: Supply oxygen and nutrients to cells and remove waste products.
Rationale: The circulatory system transports blood carrying oxygen,
nutrients, and waste products to and from tissues throughout the body .
Q2: In which cavity is the heart located?
Answer: Pericardial cavity.
Rationale: The heart resides in the pericardial cavity within the
mediastinum of the thoracic cavity .
Q3: What structure anchors the heart to the diaphragm?
Answer: Fibrous pericardium.
Rationale: The fibrous pericardium secures the heart to surrounding
structures like the diaphragm .
Q4: What is the general pathway of blood flow through the body after
it leaves the heart?
Answer: Heart → arteries → capillaries → veins → heart.
Rationale: Blood follows a general mapping system: from the heart it flows
,through arteries, then capillaries, and comes back to the heart by way of
veins .
Q5: Which of the following are afferent vessels?
A. Pulmonary Artery
B. Pulmonary Vein
C. Ascending Aorta
D. Inferior Vena Cava
Answer: B & D (Pulmonary Vein, Inferior Vena Cava).
Rationale: Afferent vessels carry blood toward the heart. Both the
pulmonary vein and inferior vena cava return blood to the heart .
Q6: Which of the following are efferent vessels?
A. Pulmonary Artery
B. Pulmonary Vein
C. Ascending Aorta
D. Inferior Vena Cava
Answer: A & C (Pulmonary Artery, Ascending Aorta).
Rationale: Efferent vessels carry blood away from the heart. Both the
pulmonary artery and ascending aorta carry blood away from the heart .
Q7: Arteries are referred to as what type of blood vessel?
Answer: Efferent blood vessels.
Rationale: Arteries always carry blood away from the heart, making them
efferent vessels .
Q8: Veins are referred to as what type of blood vessel?
Answer: Afferent blood vessels.
Rationale: Veins bring blood back to the heart .
Q9: True or False: Arteries typically carry deoxygenated blood.
Answer: False.
,Rationale: Arteries typically carry oxygenated blood, with the pulmonary
artery being the only exception as it carries deoxygenated blood .
Q10: What exception exists to the rule that arteries carry oxygenated
blood?
Answer: The pulmonary artery.
Rationale: The pulmonary artery carries deoxygenated blood from the
heart to the lungs for oxygenation .
Q11: What percentage of blood is found in arteries at rest?
Answer: 11%.
Rationale: Approximately 11% of blood is found in arteries at rest .
Q12: What percentage of blood is found in veins at rest?
Answer: 54%.
Rationale: Veins hold approximately 54% of blood at rest, serving as a
blood reservoir .
Q13: Which vessels have lower blood pressure, arteries or veins?
Answer: Veins.
Rationale: Veins are farther away from the heart and have lower blood
pressure than arteries .
Q14: What is the correct order of blood flow through the circulatory
system?
Answer: Artery → arteriole → capillary → venule → vein.
Rationale: Blood flows from larger arteries to smaller arterioles, then to
capillaries for exchange, then to venules and larger veins to return to the
heart .
Q15: Which body system supplies cells with oxygen and nutrients and
carries away waste?
Answer: Circulatory system.
, Rationale: Other systems perform some of these functions, but only the
circulatory system carries out all of them .
Q16: What is the main difference between systemic and pulmonary
circuits?
Answer: The systemic circuit carries oxygenated blood to the body, while
the pulmonary circuit carries deoxygenated blood to the lungs for
oxygenation.
Rationale: The heart pumps blood through two circuits with different
purposes and blood types .
Q17: What type of vessels are known as "exchange vessels"?
Answer: Capillaries.
Rationale: Capillaries have thin walls and are the sites where oxygen,
glucose, and nutrients are exchanged with body tissues .
Q18: What is the function of the mitral valve?
Answer: Controls blood flow from the left atrium to the left ventricle.
Rationale: The mitral valve prevents backflow into the left atrium during
ventricular systole .
Q19: What is the function of the tricuspid valve?
Answer: Regulates blood flow from the right atrium to the right ventricle.
Rationale: The tricuspid valve ensures one-way flow during right
ventricular contraction .
Q20: What vessel carries deoxygenated blood from the heart to the
lungs?
Answer: Pulmonary artery.
Rationale: The pulmonary artery transports blood to the lungs for
oxygenation in the pulmonary circuit .
