Question 1

Which of the following best describes the structural difference between lymphatic capillaries and blood capillaries?

Accepted Answer

Lymphatic capillaries have blind-ended tubes with overlapping endothelial cells, while blood capillaries form continuous loops.

Question 2

Which type of lymphatic vessel is the largest, and what is its primary function?

Accepted Answer

Lymphatic ducts; draining lymph into the venous circulation

Question 3

Which of the following statements about lymphatic capillaries is TRUE?

Accepted Answer

They contain specialized structures called lacteals for absorbing dietary lipids.

Question 4

A blockage in the thoracic duct would most directly affect lymph drainage from which region?

Accepted Answer

Left arm, left side of the head, and both lower limbs

Question 5

Which equation best represents the relationship between lymph flow ($$Q$$), pressure gradient ($$\Delta P$$), and resistance ($$R) in a $$lymphatic vessel?

Accepted Answer

$$Q = \frac{\Delta P}{R}$$

Question 6

Which of the following mechanisms does NOT contribute to the movement of lymph through lymphatic vessels?

Accepted Answer

Direct pumping by the heart

Question 7

Which lymphoid organ is most active during childhood and atrophies after puberty?

Accepted Answer

Thymus

Question 8

Which region of a lymph node contains the germinal centers where B lymphocytes proliferate?

Accepted Answer

Cortex

Question 9

Which of the following is a function of the spleen?

Accepted Answer

Filtration of blood and removal of old erythrocytes

Question 10

Which lymphatic structure is responsible for absorbing dietary lipids in the small intestine?

Accepted Answer

Lacteals

Question 11

Which of the following best explains why there are more afferent than efferent lymphatic vessels connected to a lymph node?

Accepted Answer

To slow lymph flow and allow more time for immune surveillance

Question 12

Which of the following is NOT a component of MALT (mucosa-associated lymphoid tissue)?

Accepted Answer

Thymus

Question 13

A patient has a splenic injury resulting in loss of white pulp. Which function would be most affected?

Accepted Answer

Immune response to blood-borne antigens

Question 14

Which of the following best describes the stroma of the thymus compared to other lymphoid organs?

Accepted Answer

It is composed of epithelial cells rather than reticular fibers.

Question 15

Which lymphoid structure is found in the wall of the ileum and is important for immune surveillance of intestinal contents?

Accepted Answer

Peyer's patches

Question 16

Which of the following is TRUE regarding the tonsils?

Accepted Answer

Tonsillar crypts increase the surface area for trapping pathogens.

Question 17

Which cell type is primarily found in the medullary cords of a lymph node?

Accepted Answer

B lymphocytes

Question 18

Which of the following is a function of regulatory T cells developed in the thymus?

Accepted Answer

Suppression of inappropriate immune responses

Question 19

Which lymphatic duct drains lymph from the right arm, right side of the head, and right thorax?

Accepted Answer

Right lymphatic duct

Question 20

Which of the following best describes the function of lymph nodes?

Accepted Answer

Filtration of lymph and activation of immune responses

The Lymphatic System: Structure, Function, and Associated Organs

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드