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Anatomy midterm #3 > Chapter 24 Lymphatic system > Flashcards

Chapter 24 Lymphatic system Flashcards

1
Q

What is the importance of the lymphatic system in the cardiovascular system?

A

helps CV system by removing excess ISF leaked from capillaries

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2
Q

Functions of the lymphatic system?

A

Transports fluids
Fights infections
Remives excess ISF
Transports dietary lipids
Aids in production and maturation of lymphocytes
Generates immune response

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3
Q

How does the LS remove excess ISF?

A

Leaked fluid enters lymph vessel
and becomes Lymph
Lymph vessels return fluid to venous system

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4
Q

How does the LS transport dietary lipids?

A

Transports through lymphatic capillaries called Lacteals which absorb lipids in the intestine

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5
Q

Lymphatic capillary structure?

A

Lymphatic capillaries converse into lymphatic vessels which have valves to prevent lymph form backflowing

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6
Q

Order lymph travels?

A

Lymphatic capillaries –> Lymphatic vessels –> lymph nodes –> lymph trunks

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7
Q

What are lymph trunks?

A

United lymphatic vessels after lymphnodes

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8
Q

What are the 5 principle trunks?

A
  1. Jugular trunks
  2. Subclavian trunks
  3. Bronchomediastinal trunks
  4. Intestinal trunks
  5. Lumbar trunks
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9
Q

What does the Jugular trunk drain?

A

Head and neck

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10
Q

What does the subclavian trunks drain?

A

Upper limbs, breasts, superficial thoracic wall

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11
Q

What does the Bronchomediastinal trunks drain?

A

deep thoracic structures

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12
Q

What does the intestinal trunks drain?

A

Most abdomnial structures

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13
Q

What does the Lumbar trunks drain?

A

Lower limbs, abdominopelvic wall and pelvic organs

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14
Q

What do the trunks form?

A

trunks form through fusion 2 lymphatic ducts

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15
Q

What are the 2 lymphatic ducts?

A
  1. Right lymphatic duct
    2.Thoracic duct
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16
Q

Where does the Right lymphatic duct return lymph from?

A

Right side of head and neck
Right upper limb
Right side of thorax

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17
Q

Where does the thoracic duct return lymph from?

A

Most of body except places drained by right lymphatic duct
starts off as sac structure called Cisterna chyli
Largest lymphatic vessel

18
Q

what are the 4 Lymphoid cells

A
  1. Macrophages
  2. Nurse/epithelial cells
  3. Dedritic cells
  4. Lymphocytes
19
Q

macrophages function?

A

Phagocytosis, engulf foreign invaders

20
Q

Nurse cells function?

A

Secretetory cells in thymus

21
Q

Dendritic cells function?

A

Internalize antigens and present them to lymphocytes

22
Q

What are the 3 types of lymphocytes?

A
  1. T-cells
  2. B-cells
  3. NK-cells
23
Q

What do T-cells do?

A

detect virally infected cells and cancer cells

24
Q

What do B cells do?

A

produce antibodies gainst baceria

25
Q

What do NK-cells do

A

Killer cells
Detect cancer cells

26
Q

What are major lymphatic tissues?

A

Lymphnodes, Thymus and Spleen

27
Q

What structure of the Thymus?

A

Consists of capsule, trabeculae, lobules (Cortex and Medulla)

28
Q

What lymphoid cells are in Thymus Cortex?

A

Immature T-cells
Macrophages
Nurse cells

29
Q

What lymphoid cells are in Thymus Medulla?

A

Mature T-cells
Nurse Cells

30
Q

What is the structure of the Lymphnodes?

A

Capsular extensions with trabeculae
-divide node into compartments
Stroma
capsule, trabeculae, reticular fibers and fibroblasts
Divided into medulla and cortex

31
Q

What lymphoid cells are in Lymphnode cortex?

A

T-cells
B-cells
Dendritic cells
Macrophages

32
Q

What lymphoidcells are in lymph node medulla?

A

B-cells
Macrophages

33
Q

What is the Structure of the spleen?

A

(Largest lymphatic organ)
Splenic artery and vein enter via hilum
Capsule and trabeculae
Trabeculae vessels
Branches of splenic artery/vein extend within trabeculae

34
Q

What do the cells areounf the trabeculae of the spleen subdivide into?

A

red pulp and white pulp
red pulp surrounds white pulp clusters

35
Q

What lymphoid cells are in red pulp?

A

T cells
B cells
macrophages
RBC

36
Q

Red pulp functions?

A
  1. remove worn out blood cells and platelets (macrophages)
  2. Store platelets
  3. produce blood cells during fetal life
37
Q

What lymphoid cells are in White pulp?

A

T-cells
B-cells
Macrophages

38
Q

White pulp function?

A

Immune response

39
Q

Splenic cords/Billroth’s cord

A

tissue located between red pulps blood filled sinues and the spleen

40
Q

What are the spleens functions?

A

-Iniate immune response to antigens
-stores RBCs and platelets
-get rid of old RBC, old Platelets, bacteria and foreign materials

41
Q

Thymus functions?

A

Surveillance and immune protection

42
Q

Lymphn nodes function?

A

Store lymphocytes that attack harmful invaders
Filters Lymph
Get rid of damaged/cancer cells

Anatomy midterm #3 (6 decks)

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