chpt 15. lymphatic vessels

Question 1

immunity def

Answer 1

ability to ward off the disease/ damage

Question 2

pathogens def

Answer 2

disease producing microbes

Question 3

susceptibility def

Answer 3

lack of resistance

Question 4

lymphatic system function

Answer 4

• drain excess isf
• transport dietary proteins and isf
• immune response in lymph nodes

Question 5

lymph def

Answer 5

isf in lymph vessels

Question 6

lymphatic sys components

Answer 6

• lymph
• lymph nodes
• lymphatic vessels
• structures + organs containing lymphocytes
• red bone marrow

Question 7

immune response components

Answer 7

• t cells
• antibodies produced by B cells
• plasma cells
• antigens

Question 8

which wbc are 15-30%

Answer 8

b-cells

Question 9

which wbc are 70-85%

Answer 9

T cells

Question 10

types of T cells

Answer 10

• t-helped
• t-cytotoxin
• t-regulatory/ suppressor

Question 11

lacteals function

Answer 11

pick up fats, lipids, triglycerides, vitamins (A, D, K, E)

Question 12

lacteal location

Answer 12

intestines

Question 13

chyle def

Answer 13

lymph in lacteals

Question 14

avascular tissue lacks

Answer 14

lymph capillaires

Question 15

which tissues lack lymph capillaries

Answer 15

• cartilage
• epidermis
• cornea
• CNS
• portion of speel
• red bone marrow

Question 16

lymph capillaries structure

Answer 16

• closed at one
• larger diameter than blood capillaries
• greater permeability

Question 17

lymph capillaries function

Answer 17

• unite to form lymph vessels

- isf can come in

Question 18

lymph capillaries location

Answer 18

-b/w cells

Question 19

flow of isf from lymph capillary to venous system

Answer 19

afferent lymphatic vessel 
lymph node
efferent lymphatic vessel 
lymphatic vessel 
trunk 
ducts 
venous system

Question 20

trunks

Answer 20

• lumbar trunk
• intestinal trunk
• bronchomediastinal trunk
• subclavian trunk
• jugular trunk

Question 21

ALL trunks dump into

Answer 21

left thoracic duct

Question 22

subclavian, bronchomediastinal, juglar trunk dump into

Answer 22

-right lymphatic trunk

Question 23

what does the right lymphatic trunk dump into?

Answer 23

juglar and subclavian veins

Question 24

do lymphatic vessels have thinner walls than veins?

Answer 24

yes

Question 25

what type of vessels have more valves

Answer 25

lymphatic vessels

Question 26

how much isf turns into lymph per day

Answer 26

3L

Question 27

thymus location

Answer 27

mediastinum

between sternum and aorta

Question 28

what structure is the thymus inferior to

Answer 28

cervical region

Question 29

what structure is the thymus leveled to

Answer 29

4th costal cartilage

Question 30

size of thymus in children

Answer 30

70g, bigger, since they need more protection

Question 31

size of thymus in adults

Answer 31

3g, smaller, cuz immune sys is developing

Question 32

what surrounds the thymus in children

Answer 32

adipose tissue and connection

Question 33

components of the thymus

Answer 33

• cortex
• medualla
• trabecula
• thymic (hassalls) corpuscle
• capsule

Question 34

cortex in thymus cells

Answer 34

• immature t-cells
• scattered dendritic cells
• epithelial cells
• macrophages

Question 35

scattered dendritic cell function

Answer 35

-aid in maturation of t -cells

Question 36

epithelial cell function

Answer 36

-releases thymosin and aids with maturation of t cells

Question 37

trabecula function in thymus

Answer 37

-divides thymus into 2 fucntional zone

Question 38

what is the extension of the capsule in thymus

Answer 38

trabecula

Question 39

medulla of thymus cells

Answer 39

• mature t cells
• epithelial cells
• macrophages

Question 40

medulla of thymus function

Answer 40

-clean out any missed lymph

Question 41

thymic (hassall) corpuscle function and cell

Answer 41

-cause of t cell death

40-50 epithelial kertanized cells