Which of the following factors does NOT influence heart rate?
A) gender
B) body temperature
C) age
D) skin color
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Question 2) Because lymph vessels are very low-pressure conduits, movements of adjacent tissues are important in propelling lymph through the lymphatics.
Indicate whether the statement is true or false
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Question 3) The fact that the left ventricle of the heart is thicker than the right ventricle reveals that it ________.
A) pumps blood against a greater resistance
B) expands the thoracic cage
C) sends blood through a smaller valve
D) pumps a greater volume of blood
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Question 4) The aorta receives the full force of blood exiting the heart during ventricular systole. Which of the following statements best describes the adaptive anatomy of the aorta?
A) Smooth muscle is relatively thin in the aorta to increase lumen size and systemic blood flow.
B) Elastic fibers are extensive in the tunica media of the aorta and dampen the pulse pressure generated by the heart.
C) The aorta's tunica media is thick with dense regular connective tissue to withstand the blood's pressure.
D) The tunica external of the aorta is nearly absent compared to other vessels.
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Question 5) A 14-year-old girl undergoing a physical examination prior to being admitted to summer camp was found to have a loud diastolic murmur at the second intercostal space to the left side of the sternum.
Explain the reason for the loud heart murmur associated with this girl's condition.
What will be an ideal response
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Question 6) Describe the mechanisms by which lymphatic fluid is moved through the lymphatics.
What will be an ideal response
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Question 7) Which of the following is not true regarding fenestrated capillaries?
A) Fenestrated capillaries in endocrine organs allow hormones rapid entry into the blood.
B) Fenestrated capillaries are essential for filtration of blood plasma in the kidney.
C) Fenestrated capillaries form the blood-brain barrier.
D) Fenestrated capillaries in the small intestine receive nutrients from digested food.
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Question 8) Matching
A) D
B) C
C) E
D) A
6) Efferent vessels.
7) Cortex.
8) Medullary cord.
9) Trabecula.
10) Medulla.
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Question 9) About 3 liters of fluid are lost to the tissue spaces every 24 hours and are returned to the bloodstream as lymph.
Indicate whether the statement is true or false
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Question 10) In red bone marrow newly formed blood cells enter the circulation. You would expect to see many ________ type of capillaries in red bone marrow.
A) metarterioles
B) continuous capillaries
C) sinusoid capillaries
D) fenestrated capillaries
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