Chp 20 PP Flashcards by sarah barker

Lymph fluid in lymph vessels is the

The Lymphatic System

How well did you know this?

Not at all

Perfectly

what system returns interstitial fluid and proteins to the blood

The Lymphatic System

How well did you know this?

Not at all

Perfectly

what system transports dietary fats to adipose tissue

The Lymphatic System

How well did you know this?

Not at all

Perfectly

The Lymphatic System transports what

dietary fats to adipose tissue

How well did you know this?

Not at all

Perfectly

The Lymphatic System protects against

cancer and infection

How well did you know this?

Not at all

Perfectly

fighting off disease in the lymphatic system is called

resistance

How well did you know this?

Not at all

Perfectly

general protection against disease is

nonspecific resistance

How well did you know this?

Not at all

Perfectly

specific protection

immunity

How well did you know this?

Not at all

Perfectly

lack of resistance

susceptibility

How well did you know this?

Not at all

Perfectly

More fluid moves out of the blood capillaries by filtration than returns by reabsorption is whose law

Starling’s Law

How well did you know this?

Not at all

Perfectly

how much lymph is generated a day

How well did you know this?

Not at all

Perfectly

Proteins escaped from the blood or secreted by tissues are transferred back to the blood by the

lymphatics

How well did you know this?

Not at all

Perfectly

Lymph flow is facilitated by

muscle pumps, the respiratory pump, valves, and smooth muscle (in the walls of the trunks & thoracic duct)

How well did you know this?

Not at all

Perfectly

Smaller vessels drain into

larger vessels

How well did you know this?

Not at all

Perfectly

covered vessels between cells, larger than capillaries are called

“Blind ended,”

How well did you know this?

Not at all

Perfectly

Not found in avascular tissues (CNS, cartilage) nor in the splenic pulp, and bone marrow

Lymphatic Capillaries

How well did you know this?

Not at all

Perfectly

from lymphatic endothelium attach to surrounding tissues are

Anchoring filaments

How well did you know this?

Not at all

Perfectly

Endothelial cells do what

overlap

How well did you know this?

Not at all

Perfectly

Endothelial cells overlap

high hydrostatic fluid pressure does what

separates cells, fluid into caps

How well did you know this?

Not at all

Perfectly

Endothelial cells overlap

hydrostatic fluid pressure in cap prevents

fluid movement out

How well did you know this?

Not at all

Perfectly

Lymph vessels have the same organization and routing as the

vascular tree

How well did you know this?

Not at all

Perfectly

have no separate pump (heart)

Lymphatic vessels

How well did you know this?

Not at all

Perfectly

All lymph returns to the

vena cava and to the right side of the heart

How well did you know this?

Not at all

Perfectly

Right lymphatic duct is how long

about ½ inch long

How well did you know this?

Not at all

Perfectly

Right lymphatic duct drains lymph

drains lymph from upper right side of body (arm & head)

main collecting duct of the lymphatic system

Thoracic (left) duct

Thoracic (left) duct is how long

38-45 cm long

drains 75% of body's lymph

Thoracic (left) duct

draining on the Thoracic (left) duct begins as a dilation known as

cisterna chyli located anterior to lumbar disk #2

Lymph returns to the

venous drainage through right and left lymphatic ducts at the junction of the internal jugular and subclavian veins

Lymph Flow from smallest to largest:

Capillaries | > vessels > trunks > ducts

Lymph vessels anastomose and

supply and drain lymph nodes along their course

attack microbes, especially bacteria

B lymphocytes = B cells

Two Main Types Of Lymphocytes

B lymphocytes = B cells T lymphocytes = T cells

develop into plasma cells to produce antibodies (Ab)

B lymphocytes = B cells

what happens when B lymphocytes = B cells develop into plasma cells to produce antibodies

bind to antigen to form antibody-antigen (Ag-Ab) complexes complexes prevents Ag from interacting with other body cells or molecules memory B cells – dormant until future exposure to Ag

regulate many immune responses

T lymphocytes = T cells

attack viruses, fungi, transplants, cancer, some bacteria

T lymphocytes = T cells

4 types of T cells

cytotoxic (killer) T cells helper T cells suppressor T cells memory T cells

T Cell that destroy foreign invaders

cytotoxic (killer) T cells

T cell that assist B cells and cytotoxic T cells

helper T cells

T cell that help bring immune response to an end

suppressor T cells

T cell that is dormant until future exposure to Ag

memory T cells

site of lymphocyte (B cell and T cell) production

primary lymphatic organs

in the lymphocyte development bone marrow - produces

B cells, immature T cells T cells migrate to the thymus gland to mature or die if determined to be improper

Two primary lymphatic organs

bone marrow | thymus gland

secondary lymphatic organs | are

lymphatic nodules (lymph follicles), lymph nodes, spleen, tonsils

sites of activated immune responses

lymphatic nodules (lymph follicles)

Produce reticular fibers (stroma) that provide the framing structure for other cells in lymphoid organs

Reticular cells

Reticular cells | are similar to

fibroblasts

Phagocytize foreign substances and cells. Then transport them to lymphatic tissues

Macrophages & Dendritic cells

Process foreign things into individual antigens Present Ags to T & B lymphocyte to help activate them

Macrophages & Dendritic cells

Two lobes between the sternum and the heart is what lymphatic organ

Thymus Gland

What do thymocytes produce in the lymphatic organ

hormones

What organ atrophies with age (starting ~20)

Thymus Gland

Outer cortex of the thymus gland is made up of

immature cells

the outer cortex of the thymus gland is

screened for functional capacity stimulated to proliferation stimulated to maturation

The Inner medulla of the Thymus gland is

defective T cells degenerate mature T cells move into blood

oval, bean shaped small structures scattered throughout body along lymph vessels

lymph nodes

where are lymphnodes located as far as depth

may be deep or superficial

concentrated along the respiratory tree and GI tract, in the mammary glands, axillae, and groin

lymphnodes

filter lymph fluid to trap foreign organisms, cell debris, and tumor cells

lymphnodes

Lymph enters

via a number of afferent lymphatic vessels

what filters lymph

lymph nodes

what acts as a “settling tank,” because there are fewer efferent vessels, lymph stagnates somewhat in the node

the node

purpose of lymph being stagnate in the node

This allows lymphocytes and macrophages time to carry out their protective functions

travel of lymph through the body

lyphatic vessels large subcapsular sinus smaller sinuses exit the nodes at the hilus via efferent vessels

Cancer cells from the tumor are first trapped in a

lymphnode

largest lymphoid organ in the body

spleen

organ that has fibrous capsule with arteries, veins, and efferent lymph vessels

spleen

organ located between stomach and diaphragm

spleen

a site of immune surveillance and response

white pulp in spleen

macrophages phagocytize bacteria, worn-out RBC's, platelets is

white pulp in spleen

hemoglobin is recycled and components transferred to liver | where

in the white pulp in the spleen

macrophage antigen-presentation and lymphocyte activation and proliferation some B cells mature into plasma cells here

in the white pulp in the spleen