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the lymphatic system

very important in maintaining fluid balance and helps in immunity within the body

the lymphatic system

considered the 2nd subdivision of the circulatory system

lymph

clear, yellow, watery fluid found in the lymph vessels. similar to plasma but without many large proteins. it does not have red blood cells or platelets but does contain lymphocytes.

lymph, lymph nodes, lymph vessels, and organs that contain lymph tissue

the lymphatic system is composed of..

tonsils, spleen, and the thymus gland

organs that contain lymph tissue

lymph capillaries

lymph vessels begin as..

lymph capillaries

the smallest of the lymph vessels..

veins

lymph vessels resemble the structure of what?

right lymphatic duct and thoracic duct

the lymph system will eventually drain into two large main vessels known as..

lymph nodes

oval shaped structures located along the entire length of lymph vessels

lymph nodes

these function as filters to remove bacteria and other foreign bodies including malignant cells

right lymphatic duct

the smaller of the two main vessels, about a 1/2 inch long and drains lymph from the upper right side of body

right lymphatic duct

drains lymph from the head, neck, right side of chest, and entire right upper extremity

right subclavian vein

this returns lymph to the cardiovascular system by way of the right subclavian vein

thoracic duct or left lymphatic duct

this is much longer than the other main vessel, 15-18 inches long, receives lymph from the left side of the head, neck, chst, left upper extremity and the entire body below the ribs

left lymphatic duct

this returns lymph into the cardiovascular system by way of the left subclavian vein

cisterna chyli

the thoracic duct or left lymphatic duct begins as a dilation called..

anterior to L2

where does the cisterna chyli begin?

reservoir

what does cisterna =

lacteals

small ducts that convey lymph and dietary lipids (fats) from the villi of the small intestines to the cisterna chyli

chyle

lymph in the small intestines is referred to as..

lipids

what gives lymph in the intestines a milky (creamy) like appearance

villi

finger like projections found along the mucosal walls of the small intestines, they increase the absorption area

peyer's patches

aggregations (groups) of lymph nodes located along the entire length of the small intestines

ileum

peyer's patches are most numerous in the section of the intestines called the..

ileum

longest portion of the intestines

tonsils

masses of lymphatic tissue embedded in the mucous membrance within the oral cavity and nasopharynx

tonsils

these produce lymphocytes and filter bacteria

palatine

what we call our tonsils in back and sides of throat (pair)

lingual tonsils

pair of tonsils located at the back of the tongue

nasopharynx

upper part of throat

pharyngeal tonsil or adenoid

singular tonsil located in the upper part of the throat

spleen

largest mass of lymphatic tissue, about five inches in length

spleen

situated in hthe left hypochondriac region between the stomach and the diaphragm lateral to the liver

8 ounces

how much blood does the spleen store (if needed in an emergency it contracts forcing blood into circulation)

thymus gland

bi-lobed lymphatic organ located in the upper anterior part of the thoracic cavity, produces lymphocytes

behind the sternum and between the lungs

where is the thymus gland?

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