(second midterm) Lecture 7 (4/25/16) PT. 1 Flashcards Preview

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Flashcards in (second midterm) Lecture 7 (4/25/16) PT. 1 Deck (36):
1

The cardiovascular system is derived from what germ layer? The Lymphatic system?

both derived from mesoderm

2

What is the main difference between the cardiovascular system and the lymphatic system?

The cardiovascular system has a pump and is a circuit, but the lymphatic system does not have a pump and is not a "loop" & have "terminal end"

3

The cardio & lymph systems both carry WBCs and plasma but the lymph system does NOT carry what?

RBCs

4

Major functions of lymphatic system:

Collects excess water and proteins
Fat transport
Short term immune responses
Develops long term immunity

5

From where does the lymphatic system collect proteins?

interstitial fluid

6

2 types of lymphocytes:

B-lymphocytes
T-lymphocytes

7

B-lymphocytes:

produce specific antibodies

8

T-lymphocytes:

attack specific foreign cells

9

Places where we have a lot of lymph vessels:

Surface of skin
Along guts
Near the mouth, eyes, nose
Near anus, urethra

10

Where are we doing most fat absorption?

Small intestine

11

How is the lymph circulated with no pump?

contraction of smooth muscle in larger vessels
squeezing action of skeletal system
dumps into venous system (connection "pulls" lymph along)

12

Over three-fourths of the body dumps into the _____________.

thoracic duct

13

The thoracic duct dumps into what?

"venous drainage right at the notch of the jugular and subclavian coming together to make the brachiocephalic vein... on the left"
-sumida

14

The thoracic duct begins as a loosely dilated sac that collects lymph from body. That sac is called...

the cysterna chyli

15

The thoracic duct goes through thorax and receives tributaries from...

left subclavian trunk
left jugular trunk

16

Lymph drainage is not the same on both sides. How is the right side drained?

The right lymphatic duct dumps into venous circulation at junction between right subclavian vein and right jugular vein (technically into right brachiocephalic vein)

17

What are the ducks and geese of the thorax?

esophaGOOSE
azyGOOSE
hemiazyGOOSE
vaGOOSE
...that's Sumida's joke, not mine........

18

Other lymphatic structures:

Lymph nodes
Tonsils
Spleen
Thymus gland
Pyer's Patches

19

Scattered along lymph vessels are concentrated masses of lymph tissue called:

lymph nodes

20

Macrophages and lymphocytes reside in the outer region of a lymph node, called...

cortex region

21

What is the inner collecting area of a lymph node?

medulla

22

Afferent vessel vs. Efferent vessel

Afferent = coming in
Efferent = exiting

23

The efferent vessel leaves at the _______

Hilus

24

Biggest lymphoid organ of body:

spleen

25

Different types of tonsils:

Pharyngeal
Palatine
Lingual

26

True or false: the spleen is highly vascularized.

true

27

In the spleen, what passes resident macrophages and lymphocytes?

blood

28

In fetuses, what does the spleen produce? Does that change?

red blood cells
spleen is only called back into action under stressful conditions

29

Review:
What is the arterial supply to spleen?

Splenic artery
(from celiac artery)

30

The thymus gland is ventral to what?

heart and laryngeal structures

31

The thymus has outer ______ and inner _______.

cortex
medulla

32

The cortex of the thymus contains many what?

lymphocytes

33

The fetal thymus transforms undifferentiated lymphocytes from bone marrow into what?

t-lymphocytes

34

Pyer's patches are also known as...

aggregated lymph nodes

35

Pyer's patches are common where?

tonsils
small intestine
appendix

36

What do Pyer's patches secrete?

antibodies in response to antigens in gut tube, particularly ingested viruses and bacteria