or...
Reset Password Free Sign Up


incorrect cards (0)
correct cards (0)
remaining cards (0)
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the Correct box, the DOWN ARROW key to move the card to the Incorrect box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

Correct box contains:
Time elapsed:
Retries:
restart all cards



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

Lymphatic System

Lymphatic System and Immunity

QuestionAnswer
Lymphatic System =Lymph =Lymphatic vessels =Lymphatic tissue =Lymphatic nodules =Lymph nodes =Tonsils =Spleen =Thymus
Lymphatic Vessels --Carry lymph away from tissues -Lymphatic capillaries *More permeable than blood capillaries *Epithelium functions as series of one-way valves
Functions of the Lymphatic System Fluid balance Excess interstitial fluid enters lymphatic capillaries + becomes lymph Fat abs. Abs, of fat + other substances frm digestive tract Defense Microorganisms + other foreign substances are filtered from lymph by lymph nod + frm blood by spl
Lymphatic Vessels Carry lymph away from tissues -Lymphatic capillaries= *More permeable than blood capillaries *Epithelium functions as series of one-way valves Lymphatic capillaries join to form Lymphatic vessels *Have valves that ensure one-way flow
Lymphatic Vessels II Lymph nodes: Distributed along vessels and filter lymph Lymphatic trunks: Jugular, subclavian, bronchomediastinal, intestinal, lumbar Lymphatic ducts: Right and thoracic which connect to large veins
Lymphatic Tissue and Nodules -Lymphatic tissue *Consists mainly of lymphocytes *Encapsulated or not -Lymphatic nodules *Numerous in loose connective tissue of digestive (Peyer’s patches), respiratory, urinary, reproductive systems
Tonsils -Large groups of lymphatic nodules in nasopharynx and oral cavity -Provide protection against bacteria and other harmful material Groups *Palatine *Pharyngeal *Lingual
Lymph Nodes Organized in cortex and medulla Substances removed by phagocytosis or stimulate lymphocytes or both Only structures to filter lymph **Afferent and efferent vessels
Spleen -Can be ruptured in traumatic abdominal injuries resulting in bleeding, shock, death -Blood flows through at 3 different rates Fast (most), slow, intermediate -Functions: Destroys defective RBCs Detects + responds 2 foreign subst -reservoir for bld
Thymus -Located in superior mediastinum -Divisions: Cortex and medulla -Site of maturation of T cells
Created by: zeenat on 2008-03-05



Copyright ©2001-2014  StudyStack LLC   All rights reserved.