Lymphatic System

Question 1

What does the lymphatic structure system consist of?

Answer 1

Lymph, Lymphatic vessels, structures and organs containing lympathic tissue and red bone marrow

Question 2

What is the function of the lymphatic system?

Answer 2

• drain excess interstitial fluid to maintain fluid balance
• absorption of fats from digestive tract that are too large to enter the blood capillaries
• carry out immune responses

Question 3

What is the lymph?

Answer 3

Watery fluid that moves through our lymphatic system - it collects fluids from, our tissues and returns them to our blood.

Question 4

Describe the structure of a lymphatic capillary & there characteristics

Answer 4

Thin walls only as thick as a single cell.

• closed at one end
• permeable - permits interstitial fluid to flow in but not out
• slightly larger diameter than blood capillaries
• unique one way structure

Question 5

What are lymph ducts?

Answer 5

Lymphatic vessel that empties lymph into one of the subclavian veins

Question 6

What are the two lymph ducts called?

Answer 6

• right lymphatic duct
• thoracic duct

Question 7

What is not a function of the lymphatic and immune system?

Answer 7

Maintaining homeostasis

Question 8

What is interstitial fluid?

Answer 8

Fluid found in space around cells, it comes from substances that leak out of blood capillaries

Question 9

What is one major difference between lymph and interstitial fluid?

Answer 9

The location

Question 10

What is not considered an organ of the immune system?

Answer 10

The thymus

Question 11

Where does the left subclavian vein receive lymph from?

Answer 11

Thoracic duct

Question 12

What system are the skeletal and respiratory pumps used in?

Answer 12

Lymphatic, immune and cardiovascular systems

Question 13

Which organ produces a hormone that promotes maturation of T cells?

Answer 13

Thymus

Question 14

What is one of the functions of the spleen?

Answer 14

Removes worn out blood cells

Question 15

Which cell kills infected body cells and tumour cells?

Answer 15

Natural killer cells

Question 16

What does NOT provide physical or chemical barrier?

Answer 16

Macrophages

Question 17

Describe how lymphatic capillaries are one way only vessels?

Answer 17

The wall of the lymph capillary is composed of endothelium in which the simple squamous cells overlap to form a simple one way valve. this permits fluid to enter the capillary but prevents Fromm leaving the vessel.

Question 18

What does the inability of the immune system to protect the body from a pathogen cause?

Answer 18

Immunodeficiency disease

Question 19

What can an acute allergic response lead to?

Answer 19

Anaphylactic shock

Question 20

What is anaphylactic shock?

Answer 20

When the immune system releases a flow of chemicals that can cause the body to go into shock

Question 21

What are the primary lymphatic organs & what do they provide?

Answer 21

Where lymphocytes are formed and mature. They provide an environment for stem cells to decide and mature into B and T cells

Question 22

What are the two primary lymphatic organs?

Answer 22

The red bone marrow and the thymus gland

Question 23

What are the secondary lymphatic organs? & what do they include n?

Answer 23

The site where most immune response occurs - they include the lymph nodes, spleen and lymphatic nodules

Question 24

What is the thymus gland?

Answer 24

Small gland that lies in the upper chest under breastbone. Makes and trains special white b blood cells called T cells

Question 25

What are lymph nodes?

Answer 25

They function as a filter, foreign substances are trapped and destroyed by macrophages or immune response of lymphocytes = ie phagocytosis

Question 26

Where are lymph nodes located?

Answer 26

Along lymphatic vessels

Question 27

What does afferent mean?

Answer 27

Carrying toward

Question 28

What does efferent mean?

Answer 28

Carrying away

Question 29

What is the spleen?

Answer 29

Stores and filters blood and makes white blood cells that protect you from infection

Question 30

How do we maintain healthy lymphatic system?

Answer 30

-healthy diet
- refrain from smoking or using any tobacco products
- reduce alcohol intake