lecture 2 ch 20

Question 1

What is the function of lymph fluid, vessels, and capillaries?

Answer 1

eliminate waste from the blood and defends the body against infection

Question 2

What vessel do lymphatic vessels most closely resemble and how so?

Answer 2

they resemble veins because they have valves and move fluid back to nodes similarly the veins move blood back to
the heart

Question 3

What is the difference between a lymphatic organ and a lymphoid tissue?

Answer 3

A Lymphatic Organ has Capsules and a lymphoid tissue doesn’t.

Question 4

What parts of the body do not have lymph nodes

Answer 4

below elbow & Knees

Question 4

What parts of the body do not have lymph capillaries

Answer 4

bone marrow, epidermis of skin

Question 5

What are lacteals?

Answer 5

lymphatic capillaries in the small intestine

Question 6

what do lacteals do?-

Answer 6

absorb nutrients

Question 7

where are lacteals found?

Answer 7

small intestine

Question 8

Lymph is a low-pressure system like veins. How is lymph propelled through the vessels?

Answer 8

five mechanisms- valves, skeletal muscle movement, smooth muscle, respiratory action

Question 9

What are the two types of mature lymphocytes?
T-cell and B-cell

Answer 9

T-Kills viral cells
Made in red bone marrow
Mature in thymus

B-Produces antibodies
Made in red bone marrow
Mature in red bone marrow

Question 10

Primary lymphoid organs

Answer 10

where lymphocytes mature
Red bone marrow
Thymus gland

Question 11

Secondary lymphoid organs

Answer 11

where lymphocytes function
Spleen
Lymph nodes
MALT

Question 12

What are the two main functions of lymph nodes?

Answer 12

filter waste, fight infections

Question 13

How does the lymph system play a role in cancer?

Answer 13

when cancer cells pass through the lymphatic system they get stuck in the lymph nodes similar to how B and T cells attack harmful substances in the lymph

Question 14

What is the function of the spleen

Answer 14

regulates levels of WBCs and RBCs and platelets that are damaged

Question 15

is this an organ of lymphatic system or cardiovascular system or both? Defend your answer.

Answer 15

lymphatic system because the cardiovascular is associated with pumping blood throughout the body while the lymphatic focuses on keeping blood healthy and clean

Question 16

What is MALT?

Answer 16

Mucosa associated lymphoid tissue, responds to antigens encountered on the mucous surfaces.

Question 17

Specific structures of MALT

Answer 17

tonsils, appendix, Peyer’s patches (GALT)

Question 18

Locations of MALT

Answer 18

naso – and oro-pharynx, small intestine – ileum, and in the appendix (off the cecum of the colon)

Question 19

Functions

Answer 19

sticky, catch foreign materials

Question 20

What effect does the shrinking of the thymus throughout adulthood have on the immune system?

Answer 20

Since the Thymus makes T cells, when it shrinks in adulthood this reduces the amount of T cells in your immune system causing you to be more susceptible to diseases