Lymphatic Anatomy (complete)

Question 1

What is the difference between plasma, interstitial fluid, and lymph

Answer 1

the location in which you find it
plasma is in the cardiovascular system
interstitial fluid is outside of vessels in the interstitial space
lymph is inside the lymphatic system

Question 2

What are the components of the lymphatic system

Answer 2

lymphatic vessels
lymphatic organs
lymphatic cells

Question 3

what are the functions of the lymphatic system

Answer 3

1. Return leaked plasma to the blood stream
2. Screen lymph for foreign substances
3. House lymphocytes
4. transport dietary lipids

Question 4

What is the order of flow of lymph from the interstitial space to its return into the bloodstream

Answer 4

1. Lymph capillaries
2. Lymph vessels
3. Lymph nodes
4. Lymphatic trunks
5. Lymphatic ducts
6. return to veins

Question 5

Which do lymph vessels more closely resemble? arteries or veins

Answer 5

veins

Question 6

how do lymphatic capillaries differ from blood capillaries

Answer 6

1. they begin out of nowhere (blood capillaries come from arteries and then go to being veins)
2. they have overlapping endothelial cells that form one way flaps

Question 7

What is the main function of lymph capillaries

Answer 7

to pick up interstitial fluid

Question 8

What are the special lymphatic capillaries in the small intestine called

Answer 8

lacteals

Question 9

what is the special function of lacteals

Answer 9

they pick up interstitial fluid as well as dietary lipids and lipid soluble vitamins

Question 10

What do you call the lymph that is in lacteals

Answer 10

chyle

Question 11

from where to lymph vessels get their lymph

Answer 11

from lymph capillaries

Question 12

what do lymph vessels have that prevent backflow of lymph

Answer 12

valves

Question 13

how do lymph vessels resemble veins

Answer 13

1. they have valves preventing backflow
2. they have low pressure
3. they move lymph by muscle contraction
4. they have three tunics

Question 14

What are the three tunics of lymph vessels

Answer 14

1. tunica intima
2. tunica media
3. tunica externa

Question 15

how do the tunics of the lymph vessels differ from those in veins

Answer 15

they are thinner and don’t have distinct borders

Question 16

What are the two different types of lymph vessels

Answer 16

afferent

efferent

Question 17

what is an afferent lymph vessel

Answer 17

a lymph vessel that delivers lymph to the lymph nodes

Question 18

what is an efferent lymph vessel

Answer 18

a lymph vessel that takes lymph away from the lymph nodes

Question 19

which should have cleaner lymph, afferent or efferent lymph vessels

Answer 19

efferent (because the lymph gets filtered in the lymph nodes)

Question 20

lymph capillaries are found almost everywhere that you can find blood capillaries. what are the three locations where you don’t find capillaries.

Answer 20

Red bone marrow
CNS
avascular tissues

Question 21

How many afferent vessels does a lymph node usually have leading up to it

Answer 21

many

Question 22

how many efferent vessels does a lymph node have leaving it

Answer 22

one

Question 23

What are the two main parts of a lymph node

Answer 23

the cortex and the medulla

Question 24

what type of cells do you usually find in lymph nodes

Answer 24

macrophages
dendritic cells
lymphocytes

Question 25

what are the functions of the lymph nodes

Answer 25

screen lymph for foreign antigens | initiate an immune response

Question 26

Where are the greatest clusters of lymph nodes found

Answer 26

axillary (armpit) cervical (neck) inguinal (groin) (where extremities attach to the truck)

Question 27

although the largest clusters of lymph nodes are found in the armpits, neck, and groin. where else can you find lymph nodes

Answer 27

they are scattered all throughout the body

Question 28

What is the largest lymph node in the body

Answer 28

the cisterna chyli

Question 29

The lymph from which part of the body will flow through the cisterna chyli

Answer 29

all of the lymph from the lower part of the body will

Question 30

What are the two lymphatic ducts

Answer 30

Thoracic duct | right lymphatic duct

Question 31

what part of the body does the right lymphatic duct drain

Answer 31

the upper right quadrant of the body

Question 32

what part of the body does the thoracic duct drain

Answer 32

the lower half of the body, and the upper left quadrant of the body

Question 33

Where does the right lymphatic duct empty into

Answer 33

the right subclavian vein and the right internal jugular vein

Question 34

where does the thoracic duct empty into

Answer 34

the left subclavian vein and the left internal jugular vein

Question 35

What is lymphedema

Answer 35

edema (swelling due to fluid) caused by lymph node obstruction

Question 36

What are the three ways the you can obstruct your lymph nodes and get lymphedema

Answer 36

1. lymphatic filaiasis (worms in the lymph nodes) 2. removal of nodes/scar tissue 3. malignant tumors of the nodes

Question 37

What is elephantitis

Answer 37

extreme and severe cases of lymphedema

Question 38

in what parts of the world is lymphedema most common

Answer 38

southeast asia and africa

Question 39

What can you do to cure lymphedema

Answer 39

it is not operable or curable

Question 40

What are lymph nodules

Answer 40

oval clusters of lymphatic tissue NOT surrounded by a connective tissue capsule

Question 41

What kind of cells do lymph nodules contain

Answer 41

macrophages dendritic cells lymphocytes

Question 42

what is the function of lymph nodules

Answer 42

screen for, and attack foreign antigens

Question 43

What are the two most prevalent types of lymph nodules

Answer 43

Tonsils | MALT

Question 44

What are tonsils

Answer 44

clusters of lymphatic nodules found in the oral cavity

Question 45

what is MALT

Answer 45

mucosa associated lymphatic tissue | lymphatic nodules found in the GI tract, respiratory tract, and genital and urinary tracts

Question 46

What are the organs of the lymphatic system

Answer 46

lymph nodes thymus spleen

Question 47

What is the structure of the lymphatic system organs

Answer 47

they are lymphatic tissue that is covered by a connective tissue capsule. they have macrophages, dendritic cells, and lymphocytes

Question 48

What is the function of the thymus

Answer 48

site for the maturation of T-lymphocyte maturation

Question 49

What happens to the size of the thymus as you increase in age

Answer 49

it starts out really large in infants and young children and after puberty it shrinks

Question 50

how many lobes does the thymus have

Answer 50

2

Question 51

what are the parts of each lobe of the thymus

Answer 51

cortex and medulla

Question 52

what will you find in the cortex of the thymus

Answer 52

immature T-cells

Question 53

what will you find in the medulla of the thymus

Answer 53

mature T-cells

Question 54

What is the largest lymphatic organ

Answer 54

the spleen

Question 55

where in your body do you find your spleen

Answer 55

in the upper left quadrant of the abdomen

Question 56

What are the two kinds of tissue in the spleen

Answer 56

red pulp and white pulp

Question 57

what will you find in the white pulp of the spleen

Answer 57

lymphocytes and macrophages

Question 58

what is the function of the white pulp of the spleen

Answer 58

monitors blood for foreign antigens | initiates an immune response

Question 59

what is the function of the red pulp of the spleen

Answer 59

it is a blood reservoir Hemolysis (phagocytosis of RBCs and platelets) remove debris from blood