Lymph system

Information:

Definition:
A complex circulatory system composed of a network of organs, lymph nodes, lymph ducts, and lymph vessels that produce and transport lymph from tissues to the bloodstream. The lymphatic system is a major component of the body's immune system.

Lymph is a clear-to-white fluid made of chyle (fluid from the intestines after digestion which contains proteins and fats ), some red blood cells, and many white blood cells, especially lymphocytes. Lymphocytes are the cells that attack bacteria in the blood.

Lymph nodes are small, bean-shaped, soft nodules that are not usually visible or easily felt. They are located in clusters in various parts of the body, such as the neck, armpit, and groin. Lymph nodes produce lymphocytes, monocytes, and plasma cells. They also filter the lymph fluid and remove foreign material, such as bacteria and cancer cells. When bacteria are recognized in the lymph fluid, the lymph nodes enlarge as they produce and supply additional white blood cells to help fight infection.

The organs within the lymphatic system are the tonsils, adenoids, spleen, and thymus.

See also:

drkoop.com home

ADVERTISEMENT

ADVERTISEMENT
drkoop.com

Home Health News Family Health Health Resources Health and Wellness Community Conditions and Concerns
drkoop.com Shopping







Search for
DrugChecker
Register    My Health    Site Map Saturday, July 22, 2000
 Conditions &
 Concerns
* Medical Encyclopedia

 
Health News
Family Health
Resources
Health & Wellness
Community
Conditions &
Concerns


Privacy
Statement

Privacy Center



 

Conditions > Encyclopedia > Large for gestational age (LGA)

Large for gestational age (LGA)

Information:

Definition:
The fetus or infant is larger than normal or more developed than normal for his gestational age . A way to measure and monitor the growth and development of the fetus in the uterus and the infant after birth. If the fetus or infant is larger than expected for the same age and gender, he is referred to as LGA (large for gestational age).

The measurement is calculated based on the estimated gestational age of the fetus or infant in comparison to what is considered normal height, weight, head size, and developmental level for a child of the same age and gender.

© 1998-2000
drkoop.com, Inc.
All Rights Reserved    
Online Service Agreement
Home Search Help Join 
About Us  International  Ad Info Jobs 


The lymphatic system filters fluid from around cells. It is an important part of the immune system. When people refer to swollen glands in the neck, they are usually referring to swollen lymph nodes. Common areas where lymph nodes can be easily felt, especially if they are enlarged, are: the groin, armpits (axilla), above the clavicle (supraclavicular), in the neck (cervical), and the back of the head just above hairline (occipital).