Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Stack #35106
A&P11-Class Notes P30 Lymphoid Organs-Lymph Nodes & Spleen
| Question | Answer |
|---|---|
| Lymphoid organs include: | 5-L nodes, tonsils, Peyer's patches, spleen & thymus |
| L organs consist of: | diffuse tissue and follicles |
| Lymph Nodes are what shape: | oral or bean; one side concave |
| concave side is called | hilus |
| Lymph nodes are located | along length of the lymphatics |
| L. nodes range in size | from 1 to 25 mm in length (.04 to 1.0 inch) |
| The hilus is the point where: | BV's and Efferent L vessels leave the node |
| Nodes are covered by a fibrous: | CT capsule that has extensions which project into the node. |
| Trabeculae are the | extensions that project into the node |
| Stroma is | the framework of a node |
| Framework of a node (storma) consists of: | 3 hilus, trabeculae and CT capsule |
| Flow of lymph thru node is: | lymph enters the convex side thru Afferent vessels. |
| lymph moves from convex side thru nodes and exits: | at the hilus via the Efferent vessels |
| Afferent/Efferent Vessels-which is less/why | fewer Efferent (exit) vessels; slows lymph |
| slow movement of fluid thru node because | more time for defensive actions |
| L Node has 2 regions: | cortex & medulla |
| Cortex is what layer? | outer |
| Medulla is what layer? | inside |
| Outer layer of densely packed follicles is which layer? | cortex |
| Which layer has germinal centers: | cortex has germinal centers |
| Germinal centers are loaded w/ | proliferating B-cells, which divide by mitosis to form plasma cells |
| Dendratic cells encapsulate the | folicles of the cortex |
| inner cortical layer is primarily: | t-cells |
| The inner layer of L. nodes is called: | Medulla or medullary |
| Medulla shape is defined by: | medullary cords extending from cortex. |
| medularry is composed of | lymphocytes and plasma cells |
| The splees is often described as: | blood rich |
| largest lymphoid organ is: | spleen-size of fist (5" or 12 cm) |
| Spleen is on what side? | Left |
| splenic refers to | spleen |
| what is a site for lymphocyte proliferation | spleen is l proliferation site |
| located in L abdominal: | cavity below diaphragm |
| Spleen has a hilas on | concave surface |
| Hilas is the entry/exit for: | splenic artery/vein |
| Lymphocytes monitor spleen why? | part of defense |
| Spleen extracts aged: | RBC's & platelets from blood |
| What removes debris, toxins, bacteria,ect...from blood: | spleen |
| The spleen is the site of what in fetus: | RBC production |
| Where in the body are blood platelets stored: | spleen stores platelets |
| Spleen also stores breakdown prodcuts of: | RBC's, such as iron |
| Structure of spleen-surrounded by: | fibrous capsule (wraps outer surface) |
| Trabeculae extend: (in spleen) | inward |
| What structure contains lymphocytes and macrophages | spleen has lymphocyles & macrophages |
| White Pulp areas of spleen are: | really aggregations of lymphocytes |
| Lymphocytes in spleen are suspended on: | reticular fibers that surround a central artery |
| In spleen all splenic tissue that is not white pulp is: | red pulp |
| Red Pulp includes: | venous sinusoids (blood sinusoids) and the splenic cords |
| splenic cords are AKAe | cords of Billroth |
| Splenic cords are the supporting: | FRAMEWORK of reticular CT known as cords of Billroth |
Created by:
Jean and Study Pals