Lymphatic & Immune System Flashcards Preview

Anatomy 2 > Lymphatic & Immune System > Flashcards

Flashcards in Lymphatic & Immune System Deck (31):
1

What are pathogens?

Disease producing microbes such as bacteria and viruses

2

Define resistance.

the ability to ward off damage or disease through our defenses

3

Define susceptibility

lack of resistance or vulnerability

4

What are the two types of resistance? How do they differ?

Nonspecific resistance provides immediate, but general protection against invaders
Specific resistance (immunity) develops in response to contact with a particular invader, occurs more slowly than nonspecific resistance and involves activation of specific lymphocytes

5

List components of lymphatic & immune system.

Lymph fluid
Lymphatic vessels
Red bone marrow
Various structures containing lympthatic tissue

6

What is the function of B cells in immune response?

B cells produce antibodies that recognize foreign cells

7

What is the function of T cells in immune response?

T cells destroy the intruders

8

List functions of the lymphatic & immune system

-Drain excess interstitial fluid
-Transport dietary lipids and lipid soluble vitamins
-Carry out immune response

9

In the skin, lymphatic vessels generally follow ________ while lymphatic vessels of the viscera follow _________

veins
arteries

10

__________ tissues lack lymphatic capillaries

Avascular

11

What are lacteals?

Specialized lymphatic capillaries in the small intestine that carry dietary lipids

12

Lymph passes from lymph trunks into what two main channels?

thoracic duct
right lymphatic duct

13

The left lymphatic duct receives lymph from _______

head, neck, chest, left upper limb, and the entire body inferior to the ribs

14

The right lymphatic duct receives lymph from _________

the upper right side of the body

15

The lymphatic ducts drain into the ________

subclavian veins

16

Many components of blood plasma freely flow through the capillaries to form _________

interstitial fluid

17

Excess interstitial fluid drains into ______

lymphatic capillaries

18

List the sequence of fluid flow from the blood capillaries to the lymphatic system

blood capillaries > interstitial spaces > lymphatic capillaries > lymphatic vessels > lymphatic ducts > subclavian veins

19

The respiratory pump returns lymph via what mechanism?

descending/elevating of the lungs/diaphragm

20

What are primary lymphatic organs?

sites where stem cells divide and become immunocompetent (red bone marrow, thymus)

21

What are secondary lymphatic organs?

sites where most immune responses occur (lymph nodes, spleen, lymphatic nodules

22

Pre-t cells migrate from the bone marrow to the ________ and mature into T cells here

Thymus

23

The outer cortex of lymph nodes contains _____

aggregates of B cells

24

The inner cortex of lymph nodes contains ________

primarily T cells

25

The medulla of lymph nodes contains _________

B cells, antibody producing plasma cells and macrophages

26

Metastasis is ___________

the spread of disease from one part of the body to another

27

The __________ is the single largest mass of lymphatic tissue

Spleen

28

___________ is more likely to occur due to loss of the filtering and phagocytosis of the spleen

Sepsis (blood infection)

29

Immunocompetence is ________

the ability to carry out immune responses

30

The first line of nonspecific resistance is ________

skin and mucous membranes

31

The second line of nonspecific resistance is __________

internal defenses - antimicrobial proteins, natural killer cells and phagocytes, inflammation, fever