AP2 LAB: Blood=Exercise 49

The indented region where blood vessels and nerves join a lymph node is called the ____

hilum

cisterna chyli

inferior expanded sax of thoracic duct where fatty intestinal lymph collects

The lymph nodes associated with the lymphatic vessels that drain the lower limbs are located in the ___ region

inguinal

thymus

location of T lymphocyte maturation

Once tissue (interstitial) fluid is inside the lymph capillary, the fluid is called

lymph

Lymph nodes contain large numbers of white blood cells called ____ & macrophages that fight invading organisms

lymphocytes

lymphatic vessels usually lead to lymph ___ that filter the fluid being transported

nodes

The right lymphatic duct drains only the ______ quadrant of the entire body.

right upper

The lymphoid organs in the pharynx (throat) that often are infection sites in children are collectively called ______.

tonsils

The tiny islands (nodules) of tissue within the spleen that contain many lymphocytes comprise the _____ pulp.

white

A ______ of connective tissue surrounds the spleen.

capsule

T/F Lymphatic capillaries and blood capillaries are open at both ends.

False=Only lymphatic capillaries are open at both ends

________ within the spleen engulf and destroy foreign particles and cellular debris.

Macrophages

Lymph ___ that contain germinal centers are the structured units of a lymph node

Nodules

T/F The thymus continues to enlarge as a person ages.

T

T/F Lymph flows faster during periods of exercise.

True

Lymph enters a node through a(n) ___ lymphatic vessel

afferent

lymph nodes are majorly in 2 regions

axillary & inguinal regions

lymph nodes

bean shaped organs that cleanse lymph & activate immue response

Lymphatic pathways begin as Lymphatic ___ that merge to form lymphatic collecting vessels

capillaries

Lymphatic System

closely associated with the cardiovascular system & includes a network of vessels that assist in the circulation of body fluids

lymphatic trunk

collect lymph from lymphatic collecting vessels

lymphatic collecting vessels

collect lymph from microscopic lymphatic capillaries

Lymph finally flows into lymphatic _______ just before connecting to a blood vessel.

collecting ducts

lymph nodes contain

concentrations of lymphocytes & macrophagesthat cleanse the lymph & activate an immune response

edema

fluid accumulating in tissue spaces

lymph

fluid in the lymphatic vessels

As blood flows through capillary beds

fluids continually filter from the plasma of the blood along with some dissolved nutrients, but leaving most of the plasma proteins behind in the blood

Spleen

largest lymphatic organ contains large numbers of red blood cells, lymphocytes, & macrophages

*collecting ducts* thoracic duct= right lymphatic duct=

largest lymphatic vessels; collect lymph from lymphatic trunks thoracic duct=connects to left subclavian vein near left internal jugular vein right lymphatic duct= connects to right subclavian vein near right internal jugular vein

The thoracic duct drains into the

left internal jugular vein.

capillaries drain into (4 steps)

lymphatic collecting vessels-->larger lymphatic trunks-->collecting ducts-->subclavian veins

red bone marrow

major production site of white blood cells

The thymus is located in the ___, anterior to the aortic arch.

mediastinum

lymphatic capillaries

microscopic, blind-ended vessels in which excess interstitial fluid first enters the lymphatic system

Which of the following areas would contain the fewest lymph nodes?

plantar

thoracic duct

provides drainage for the entire body except for the right upper quadrant

subclavian veins

receive lymph from collecting ducts

The ____ pulp of the spleen contains large numbers of RBC's, lymphocytes, and macrophages.

red

The spaces within a lymph node are called lymph ___ through which lymph circulates

sinuses

A __________ is the largest lymphatic organ.

spleen

The _____ is the largest of the lymphatic organs.

spleen

Lymph drainage from collecting ducts enters the ___ veins.

subclavial

The ____ is larger & longer of the 2 lymphatic collecting ducts

the thoracic lymphatic duct

thoracic duct connects to the... right lymphatic duct drains...

thoracic duct connects to the *left subclavian duct* right lymphatic duct drains *only the right upper quadrant into the R subclavian vein*

The ___ is very large in a child & will atrophy in advanced age.

thymus

Lymphatic vessels contain ___ that help prevent back flow of lymph

valves