Ch 21: Lymphatic System Flashcards Preview

A&P II: BIO426 > Ch 21: Lymphatic System > Flashcards

Flashcards in Ch 21: Lymphatic System Deck (57)
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1

What are the three functions of the lymphatic system?

  1. Fluid return
  2. Immunity
  3. Lipid absorption

2

Capillary beds lose fluid which goes into _____ tissues.

interstitial

3

___ % of blood fluid is returned to the venous side of the capillary beds.

85%

4

__ % of blood crossing the capillary bed is lost to interstitial tissues.

15%

5

The fluid lost in in the capillary beds is called...

interstitial fluid

6

What system manages interstitial fluid?

Lymphatic

7

Lymph vessels filter interstitial tissue to remove _______. 

microbes

8

Lipid absorbtion occurs in...

the digestive tract

9

What are the two main parts to the Lymphatic System?

  1. Lymph
  2. Lymphatic vessels

10

True or False

The Lymphatic System is a closed system.

False.

It picks up and drops off but does not circulate through itself like the Cardiovascular System

11

What are the four types of lymphatic vessels?

  1. Capillaries
  2. Collecting vessels
  3. Lymphatic trunks
  4. Collecting ducts

12

Lymphalic capillaries pick up fluid from the...

capilary bed

13

Describe the epithelial layer of lymphatic capillaries.

  • single layer of cells
  • allows for easy diffusion
  • cells form shingles and leave large gaps to allow larger particles through

14

Lymphatic capillaries have a _______ membrane.

discontinuous

15

Lymphatic capillaries converge to form... 

collecting vessels

16

Collecting vessels run parallel to...

arteries and veins

17

Collecting vessels carry lymph through ______ which filter lymph.

nodes

18

Lymph nodes filter for...

  • microbes
  • cellular debris
  • chemicals

19

The lymphatic system filters fluid and then...

returns it to the blood stream

20

Collecting vessels converge to form...

Lymphatic trunks

21

The purpose of lymphatic trunks is to...

collect fluid from regions of the body

22

All lymphatic trunks coverge into 1 of 2... 

Collecting ducts

23

What are the names of the two collecting ducts?

Right lymphatic duct and Thoracic duct

24

The right collecting duct collects fluid from...

  • right jugular trunk
  • right subclavian trunk
  • broncomediastinal trunk

25

The right collecting duct empties into the...

Right subclavian vein

26

The thoracic duct collects fluid from...

Below the diaphragm

  • Lumbar
  • Intestinal
  • Left jugular
  • Left subclavian

27

The thoracic duct empties into the...

Left subclavian vein

28

True or False

Lymphatic fluid is moved by the lymphatic pump

False.

There is no such thing as a lymphatic pump

29

What 4 ways is lymphatic fluid moved through the vessels?

  1. Muscle pumps (contractions of skeletal muscles)
  2. Contraction of lymph vessels (like veins)
  3. Arterial pulsation (by proximity)
  4. Respiratory pump (expansion and contraction of diaphragm)

30

What are the 6 types of Lyphatic cells and which one is not a leukocyte?

  1. Dendritic cells
  2. Reticular cells (non-leukocyte)
  3. B-lymphocyte
  4. T-lymphocyte
  5. Monocyte
  6. Natural Killer cells