Unit 1: Lymphatic System

Question 1

The lymphatic system

Answer 1

Works closely with the cardiovascular system to maintain hemostasis in the human body

Question 2

Functions of lymphatic system

Answer 2

Fluid balance, dietary fat absorption and defense against disease

Contains lymph (liquid) and lymphatic organs throughout the body

Question 3

Lymph

Answer 3

Fluid in lymphatic system that regulates fluid levels and protects against disease

Enters lymphatic system through lymphatic capillaries

Question 4

Major lymphatic ducts

Answer 4

Right and thoracic (left, drains both legs and left arm and left of head)

Question 5

Order fluid moves

Answer 5

1. Lymphatic capillaries
2. Lymph ducts
3. Lymph ducts

Question 6

Lymphatic capillaries

Answer 6

Smallest lymphatic vessels thin and blind ended

Question 7

Lymph vessels

Answer 7

Mid sized vessels

Question 8

Thymus gland

Answer 8

Located in the mediastinum of the thoracic cavity

Shrink in size and activity as we get older

Question 9

Red bone marrow

Answer 9

found in some bones in adults and most in children

Red blood cells are formed here

Question 10

Lymph nodes

Answer 10

Nodules located in specific areas

Cleanses the lymphatic fluid

Question 11

Spleen

Answer 11

Largest lymphatic organ behind stomach

Red pulp filters blood and white pulp contains lymphocytes

Question 12

Peyers patches

Answer 12

Secondary lymphatic organ inside the wall of the intestines

Protect against pathogens that can enter body through digestive tract

Question 13

Tonsils

Answer 13

Located in the throat

Protects against pathogens that enter the nose or mouth

Question 14

Non-specific innate immunity

Answer 14

First line- skin, mucus, saliva

Second line- fever, inflammation, interferons, phagocytes…

Question 15

Interferons

Answer 15

Proteins that protect the body against viral infections

Question 16

Phagocytes

Answer 16

Responsible for destruction of foreign substances

Question 17

Basophils

Answer 17

Secrete histamine

Question 18

Natural killer cells

Answer 18

Causes cells to lyse

Question 19

Specific adaptive immunity

Answer 19

3rd line of defense

Recognizes a specific substance

Question 20

Humoral immunity

Answer 20

Involves B lymphocytes (antibodies, plasma cells)

Recognizes antigen and engulfs it and then presents to B or T cells

Question 21

Cell mediated immunity

Answer 21

Involves T lymphocytes (

Effective against virus infected cells, bacteria infected cells, parasites and cancer cells , intracellular pathogens

Question 22

Natural active immunity

Answer 22

Get sick and then get immunity

Question 23

Artificial active immunity

Answer 23

Vaccinations

Question 24

Natural passive immunity

Answer 24

Antibodies pass from mother to child and milk or through placenta

Question 25

Artificial passive immunity

Answer 25

Antibodies transferred from immune individual to sick individual like an anti-toxin or anti-venom