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

Ch 21: Lymphatic System Flashcards

(57 cards)

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1
Q

What are the three functions of the lymphatic system?

A
  1. Fluid return
  2. Immunity
  3. Lipid absorption
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2
Q

Capillary beds lose fluid which goes into _____ tissues.

A

interstitial

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3
Q

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

A

85%

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4
Q

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

A

15%

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5
Q

The fluid lost in in the capillary beds is called…

A

interstitial fluid

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6
Q

What system manages interstitial fluid?

A

Lymphatic

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7
Q

Lymph vessels filter interstitial tissue to remove _______.

A

microbes

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8
Q

Lipid absorbtion occurs in…

A

the digestive tract

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9
Q

What are the two main parts to the Lymphatic System?

A
  1. Lymph
  2. Lymphatic vessels
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10
Q

True or False

The Lymphatic System is a closed system.

A

False.

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

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11
Q

What are the four types of lymphatic vessels?

A
  1. Capillaries
  2. Collecting vessels
  3. Lymphatic trunks
  4. Collecting ducts
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12
Q

Lymphalic capillaries pick up fluid from the…

A

capilary bed

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13
Q

Describe the epithelial layer of lymphatic capillaries.

A
  • single layer of cells
  • allows for easy diffusion
  • cells form shingles and leave large gaps to allow larger particles through
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14
Q

Lymphatic capillaries have a _______ membrane.

A

discontinuous

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15
Q

Lymphatic capillaries converge to form…

A

collecting vessels

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16
Q

Collecting vessels run parallel to…

A

arteries and veins

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17
Q

Collecting vessels carry lymph through ______ which filter lymph.

A

nodes

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18
Q

Lymph nodes filter for…

A
  • microbes
  • cellular debris
  • chemicals
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19
Q

The lymphatic system filters fluid and then…

A

returns it to the blood stream

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20
Q

Collecting vessels converge to form…

A

Lymphatic trunks

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21
Q

The purpose of lymphatic trunks is to…

A

collect fluid from regions of the body

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22
Q

All lymphatic trunks coverge into 1 of 2…

A

Collecting ducts

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23
Q

What are the names of the two collecting ducts?

Study These Flashcards
A

Right lymphatic duct and Thoracic duct

24
Q

The right collecting duct collects fluid from…

Study These Flashcards
A
  • 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
31
What is a natural killer cell?
A large lymphocyte that destroys bacteria, microbes and foreign cells (ex. as from organ transplants causing rejection)
32
The "T" in T-lymphocyte stands for...
thymus
33
T-cells mature in...
the thymus
34
B-cells mature in...
bone
35
What type of cell is a Macrophage is \_\_\_\_\_\_\_\_, which means it engulfs and breaks down foreign objects.
phagocytotic
36
A dendritic cell is found in the _______ and _______ membranes and gets rid of \_\_\_\_\_\_\_.
epidermis mucus microbes
37
Reticular cells are found in...
connective tissue
38
What are the two types of lymphatic tissue?
1. Diffuse lymphatic tissue 2. Lymphatic nodules
39
Does diffuse lymphatic tissue have a high or low concentration of lymphocytes?
low
40
Where is Diffuse lymphatic tissue found? Give examples
Where there is access to the external. Tonsils, respiratory tract, digestive tract
41
The most common type of diffuse lymphatic tissue is known as \_\_\_\_\_, which stands for...
MALT Mucus Associated Lymphatic Tissue
42
Do lymphatic nodules have a high or low concentration of lymphocytes?
High
43
Lymphatic nodules form when...
needed
44
In the small intestine, lymphatic nodules are also known as
Peyer Patches
45
Peyer Patches are looking for...
microbes in your food supply
46
Where are some places lymphatic nodules are found?
appendix, small intestine, urinary tract
47
What are the two types of lymphatic organs?
1. Primary 2. Secondary
48
What is the definition of a primary lymphatic organ?
They are the sites of maturation of Lyphocytes
49
In what two places do lympocytes mature?
1. Red bone marrow 2. Thymus
50
Red bone marrow has _______ cells that can become whtie or red blood cells.
Homopoietic stem cells
51
The thymus secretes a chemical called _______ that promotes the development and activity of T-cells
thymosine
52
What is the definition of secondary lymphatic organs?
Organs that mature lymphocytes migrate to where they can find their specific antigen.
53
Give 3 examples of secondary lymphatic organs
1. lymph nodes 2. tonsils 3. spleen
54
The spleen is the largest _______ and filters \_\_\_\_\_\_\_.
secondary lymphatic organ blood
55
The spleen has __ regions called...
2 white pulp and red pulp
56
In the white pulp of the spleen, lymphocytes are...
waiting to find their antigens
57
What occurs within the red pulp of the spleen?
* houses extra RBCs to be used when/if more are needed * removes/destroys sick/dying RBCs

z_A&P II: BIO426 (31 decks)

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