Q: A patient has a systolic blood pressure of 140 mmHg and a diastolic blood pressure of 90 mmHg. What is their mean arterial pressure (MAP)? Use the formula $$MAP = \text{Diastolic Pressure} + \frac{1}{3} \text{Pulse Pressure}.$$

$$MAP = 90 + \frac{1}{3} \times (140 - 90) = 90 + \frac{1}{3} \times 50 = 90 + 16.67 = 106.67$$ mmHg

Question 1

Which layer of a blood vessel is primarily responsible for vasoconstriction and vasodilation, and what is the main tissue type found in this layer?

Accepted Answer

Tunica media; composed of smooth muscle and elastic fibers

Question 2

A patient has a systolic blood pressure of 140 mmHg and a diastolic blood pressure of 90 mmHg. What is their mean arterial pressure (MAP)? Use the formula $$MAP = 	ext{Diastolic Pressure} + \frac{1}{3} 	ext{Pulse Pressure}.$$

Accepted Answer

$$MAP = 90 + \frac{1}{3} 	imes (140 - 90) = 90 + \frac{1}{3} 	imes 50 = 90 + 16.67 = 106.67$$ mmHg

Question 3

Which type of capillary would be most suitable for rapid filtration of blood in the kidneys, and why?

Accepted Answer

Fenestrated capillaries; because their pores increase permeability

Question 4

If a blood vessel undergoes vasoconstriction, what happens to the lumen diameter and blood pressure?

Accepted Answer

Lumen diameter decreases; blood pressure increases

Question 5

A patient with kidney disease develops secondary hypertension. Which of the following best explains this condition?

Accepted Answer

Hypertension resulting from an identifiable disorder affecting blood pressure regulation

Question 6

Which formula correctly represents the relationship between blood flow ($$F$$), blood pressure ($$BP$$), and resistance ($$R$$)?

Accepted Answer

$$F = \frac{BP}{R}$$

Question 7

A patient has a capillary hydrostatic pressure ($$HP_c) of 25 $$mmHg and a capillary osmotic pressure ($$OP_c) of 20 $$mmHg. What is the net filtration pressure ($$NFP) $$and what does it indicate? Use $$NFP = HP_c - OP_c.$$

Accepted Answer

$$NFP = 25 - 20 = 5$$ mmHg; indicates filtration out of the capillary

Question 8

Which of the following best describes the function of venous valves?

Accepted Answer

They prevent backflow of blood, especially in the limbs

Question 9

Which lymphoid organ is responsible for removing old red blood cells, storing platelets, and producing immune responses?

Accepted Answer

Spleen

Question 10

A blockage in a lymphatic vessel would most likely result in which of the following clinical conditions?

Accepted Answer

Edema due to accumulation of tissue fluid

Question 11

Which of the following is NOT a primary lymphoid organ?

Accepted Answer

Spleen

Question 12

Which structure in a lymph node contains lymphocytes, plasma cells, and macrophages, and is involved in immune responses?

Accepted Answer

Medullary cords

Question 13

Which of the following is a function of MALT (Mucosa-Associated Lymphoid Tissue)?

Accepted Answer

Protects mucosal surfaces from pathogens

Question 14

Which of the following is a key difference between innate and adaptive immunity?

Accepted Answer

Adaptive immunity is acquired after exposure and has memory

Question 15

A person exposed to a virus for the first time will rely primarily on which defense system, and why?

Accepted Answer

Innate immunity; because it is present at birth and acts quickly

Question 16

Which cell type is responsible for producing antibodies in response to an antigen?

Accepted Answer

Plasma cells (differentiated B lymphocytes)

Question 17

A small molecule that becomes antigenic only when attached to a larger protein is called:

Accepted Answer

Hapten

Question 18

Which of the following is a function of antibodies produced by plasma cells?

Accepted Answer

Neutralize toxins and viruses

Question 19

Which process describes the rapid cell division and differentiation of lymphocytes after antigen encounter?

Accepted Answer

Clonal expansion

Question 20

A patient with a fever is experiencing which benefit as part of the innate immune response?

Accepted Answer

Enhanced immune activity and inhibition of microbial growth

Cardiovascular, Lymphatic, and Immune Systems: Structured Study Notes

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