Lymphatic System

Question 1

What is the system of lymphatic vessels and capillaries?

Answer 1

Lymphatic System

Question 2

A portion of the _____ leaks out between capillary membranes and into surrounding tissues.

Answer 2

Plasma

Question 3

The fluid that leaked out of the blood capillaries are collected into _____.

Answer 3

A parallel system of lymphatic capillaries and then to lymphatic vessels.

Question 4

The fluid from lymphatic vessels funnel into two _____.

Answer 4

Large Thoracic Ducts

Question 5

What happens to the fluid once it reaches the chest?

Answer 5

It rejoins the blood.

Question 6

This is also known as the second circulatory system.

Answer 6

Lymphatic System

Question 7

How is lymph moved through the vessels?

Answer 7

By squeezing of skeletal muscles

Question 8

These are regions with a fine mesh that filters dead cells and other large fragments from the lymph.

Answer 8

Lymph Nodes

Question 9

These cells are found in the nodes and consume materials that were trapped in the mesh.

Answer 9

Phagocytic Cells

Question 10

These are the two types of cells found in the nodes.

Answer 10

Phagocytic Cells and Lymphocytes

Question 11

This is where the body’s blood is frequently filtered.

Answer 11

Spleen

Question 12

These are frequently localized in the nodes.

Answer 12

Immune Responses

Question 13

Immune responses are particularly localized where?

Answer 13

The Nostrils

Question 14

These can also be found in the nodes and they monitor the plasma for foreign antigens.

Answer 14

Immunocytes

Question 15

These are the components of the lymphatic system.

Answer 15

1. Lymph (the fluid)
2. Vessels/Lymphatics
3. Structures and Organs (Lymph Nodes, Spleen, and Thymus

Question 16

What are the functions of the lymphatic system?

Answer 16

1. Fluid Balance
2. Absorption of Fats
3. Surveillance and Defense

Question 17

How does the lymphatic system maintain fluid balance?

Answer 17

By returning excess tissue fluid and proteins to the blood

Question 18

How does the lymphatic system help in absorbing fats?

Answer 18

Via lymphatic capillaries or lacteals rather than blood capillaries

Question 19

Lymph formation depends on _____.

Answer 19

Tissue Fluid Formation

Question 20

What is tissue fluid made up of?

Answer 20

Water and Dissolved Substances

Question 21

How does tissue fluid leave blood capillaries?

Answer 21

Filtration and Diffusion

Question 22

These leak from the capillaries during filtration and are not returned to the bloodstream, increasing osmotic pressure within the tissues.

Answer 22

Proteins

Question 23

This interferes with the return of fluids to the bloodstream.

Answer 23

Osmotic Pressure

Question 24

Increasing _____ forces some of the fluid into lymphatic capillaries.

Answer 24

Interstitial Pressure

Question 25

This drives the entry of lymph into lymphatic capillaries.

Answer 25

Hydrostatic Pressure

Question 26

_____ are the forces that propel lymph through lymphatic vessels.

Answer 26

Forces that move blood in veins

Question 27

A condition that interferes with the flow of lymph will result in _____.

Answer 27

Edema

Question 28

What is the organization of the lymphatic vessels?

Answer 28

Lymphatic Capillaries to Lymphatic Vessels to 2 Lymphatic Ducts to Thoracic Duct (to Left Subclavian Vein) or to Right Lymphatic Duct (to Right Subclavian Vein) to General Circulation

Question 29

These are tiny, closed-ended tubes that extend into interstitial spaces.

Answer 29

Lymphatic Capillaries

Question 30

Lymphatic capillaries receive tissue fluid through _____.

Answer 30

Thin Walls

Question 31

Lymphatic vessels have _____ walls than veins.

Answer 31

Thinner

Question 32

What composes a lymphatic vessel?

Answer 32

Three Layers (Vessel Wall) and Semilunar Valve

Question 33

These pass through lymph nodes and merge to form lymphatic trunks.

Answer 33

Large Lymphatic Vessels

Question 34

What is the purpose of the lymphatic trunks?

Answer 34

To drain lymph from the body

Question 35

These are small bean-shaped organs made of ovoid or round mass of lymphatic tissue.

Answer 35

Lymph Nodes

Question 36

What are efferent lymphatic vessels attached to?

Answer 36

Hilum

Question 37

What are afferent lymphatic vessels attached to?

Answer 37

Convex Surface of the Lymph Node

Question 38

What are lymph nodes covered with?

Answer 38

Fibrous Capsule Connective Tissue

Question 39

The fibrous capsule connective tissue extends _____ and divides it into _____.

Answer 39

Inside the Node; Nodules

Question 40

What are some of the names of nodules?

Answer 40

Tonsils, Adenoids, and Peyer's Patches

Question 41

What are housed inside nodules?

Answer 41

Lymphocytes and Macrophages

Question 42

What is/are the function/s of lymph nodes?

Answer 42

Filter Lymph; Remove Bacteria and Cellular Debris

Question 43

This is a soft, bilobed organ located along the trachea, behind the sternum in the upper thoracic cavity.

Answer 43

Thymus

Question 44

The thymus _____ in size during the lifetime.

Answer 44

Shrinks

Question 45

What surround the thymus?

Answer 45

Connective Tissue Capsule

Question 46

The connective tissue capsule that surrounds the thymus divides it into _____.

Answer 46

Lobules

Question 47

What can be found in the lobules of the thymus?

Answer 47

Lymphocytes

Question 48

The thymus secretes this hormone.

Answer 48

Thymosin

Question 49

What does thymosin do?

Answer 49

It influences the maturation of T-cells once they leave the thymus.

Question 50

This is the largest lymphatic organ located between the stomach and the diaphragm.

Answer 50

Spleen

Question 51

Connective tissue divides the spleen into _____.

Answer 51

Lobules

Question 52

The lobules of the spleen contain _____.

Answer 52

Sinuses filled with blood instead of lymph; Red Pulp and White Pulp

Question 53

What is the red pulp?

Answer 53

It contains all the components of circulating blood.

Question 54

What is the white pulp?

Answer 54

It is similar to lymphatic nodules and contains mostly lymphocytes.

Question 55

What are the functions of the spleen?

Answer 55

Filters and Purifies Blood; Acts as a Blood Reservoir; Site for Erythropoeisis

Question 56

This is a condition of extreme edema that occurs when lymph vessels become blocked by filarial worms.

Answer 56

Elephantiasis

Question 57

These are multiple groups of large lymphatic nodules.

Answer 57

Tonsils

Question 58

Where are the tonsils located?

Answer 58

Mucous Membrane of the Oral and Pharyngeal Cavities

Question 59

What are the functions of the tonsils?

Answer 59

They guard the common entrance to the digestive and respiratory tracts.

Question 60

How do the three types of tonsils differ?

Answer 60

Location, Epithelial Lining, Presence of Crypts, Presence of Definitive Partial Capsule