LObj Chp 21 Flashcards

1
Q

Identify components that comprise the lymphatic system

A

Lymph, lymphatic vessels, lymphatic tissues, Red bone marrow & Thymus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Lymph

A

(The recovered Interstital fluid that passed through lymphatic vessel) Clear colorless fluid with little protein that originate as ECF drawn into lymphatic capillaries.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Lymphatic vessels

A

Makeup of unified lymphatic capillaries(one ended closed) that return lost plasma proteins to blood stream

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Lymphatic tissues

A

Makeup of lymphocytes and macrophages in the ct of mucous membranes(MALT Mucosa-Associated-lymphatic-Tissue and various organs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Lymphatic Organs (Primary) (Red Bone Marrow, Thymus)

A

Site where stem cells T, and B divide and become IMMUNOCOMPETENT, and are able to recognize and respond to foreign antigens.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Lymphatic Organs(Secondary) Lymph nodes, tonsils, spleen, lymphatic nodules

A

Sites that deliver/execute/carry out immune responses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Major Functions of Lymphatic System

A

*Maintaining Homeostasis by
-draining excess interstital fluid
- lipid absorption and transport of dietary lipids
- providing defense against disease through immune responses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Anatomy of (Lymph Capillaries vs Blood Capillaries)

A

Lymph Capillaries: Blind ended, with overlapping endothelial cells creating mini-valves, often lacking a complete basement membrane, anchored to surrounding tissue by filaments.

Blood Capillaries: Continuous loop structure, with tight junctions between endothelial cells, usually with a complete basement membrane.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Lacteals

A

[Absorbs dietary fats]Specialized lymph capillaries present within small intestine villi that absorbs fats.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Formation and composition of lymph fluid

A

Leaking of interstitial fluid from capillaries into tissues which is then collected by lymphatic capillaries of lymphatic tissue.

Composition: water, proteins, electrolytes, WBCs, lymphocytes/ cellular debris from tissue.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Excessive fluid from blood plasma

A

Interstitial Fluid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Natural Killer Cell

A

Lymphatic cell that functions to non-specifically target bacteria, transplanted tissue cells, and virally infected or cancerous host cells.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Plasma cells

A

Originated as a B cell, eventually B cells differentiate into an antibody that produces plasma cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Macrophages

A

Cells derived from monocytes that function as phagocytes and antigen-presenting cells are called macrophages

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Lymph Circulation

A

1.Lymphatic capillaries absorb Interstitial fluid which turns to lymph
2. Lymph is drained by lymphatic capillaries into [collecting/lymphatic] vessels ………..

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Thymus Gland

A

Provides suitable environment for T cell development, and selection, ensuring functional/self tolerant cells are released into circulation. (Adpative Immunity)

#Location: in the Anterior Mediastinum, above heart/ between lungs.
-most active during childhood and atrophies with age

17
Q

Capsule(Thymus):

A

CT layer surrounding the thymus, providing protection and structural support.

18
Q

Trabeculae(thymus)

A

Extensions of the capsule that divide the gland into lobules, creating a framework for the tissue.

19
Q

Cortex(Thymus)

A

Outer region of each lobule, densely packed with [(immature T cells)-thymocytes] and epithelial cells

20
Q

Medulla(Thymus)

A

inner region of each lobule, containing mature T cells and fewer epithelial cells, often with Hassall’s corpuscles

21
Q

Lymph Nodes

A

(Filter of lymph fluid) by trapping pathogens and foreign particles.

# Serve as a site for lymphocyte activation and proliferation(plays a crucial role in immunology response)

22
Q

Spleen

A

Blood filterer, removes old/damaged rbcs and pathogens.

#serves as a reservoir for blood and is a site for the activation of immune responses.

Location: Located in the upper left abdomen, behind stomach/ beneath diaphragm.

23
Q

Capsule(spleen)

A

Dense CT layer that protects spleen

24
Q

Trabeculae(Spleen)

A

Divides spleen into compartments via extensions from capsule

25
Q

Red pulp(Spleen)

A

Area of spleen Responsible for filtering blood, via network of sinuses filled with blood and macrophages for phagocytosis of old/damaged RBCs.

26
Q

White Pulp(spleen)

A

Lymphocyte-rich/compiled Immune function area including B cells and T cells organized around central arterioles

27
Q

Lymphatic Nodules/Folicules

A

Small, localized clusters of lymphoid tissue that play a role in immune response by facilitating the production and maturation of lymphocytes and antibody production.
#Consists of B cells, T cells, and antigen-presenting cells.
#Can either be Primary(inactive) or secondary(active) with germinal centers

28
Q

Lymphatic Nodules……con

A

MALT(Mucosa-Associated Lymphoid Tissue): (Mucosal Surfaces) Gastrointestinal tract, respiratory tract, etc.

Locations: