Anatomy II Exam 2 Flashcards
Vascular system
dealing with a system of vessels
what are the 2 type of vascular systems within the body?
blood vascular
lymph vascular
Lymph
clear, straw color; forms/ begins from tissue fluid; substance which flows through the lymph vessels
Tissue fluid
The substance, which bathes and surrounds the body cells.
Lymph capillaries
The flow of all lymph in the human body, always begins in the smallest vessels
Functions
a. Maintaintissuefluid balance
b. Remove other waste products
c. Body’s basic defense system (phagocytosis, antibodies)
Lymphoid tissues
specialized mass of cells or type of tissue located throughout the body (strategically placed)
Tonsils
3 pairs of lymphoid tissue whose purpose is to protect the opening between mouth cavity proper and oral pharynx.
- Adenoids
- Tonsils
- Haranginial
Spleen
largest mass of lymph tissue in body; helps liver recycle red blood cells; located in the abdominal pelvic cavity
Thymus gland
located at base of neck; largest and most active during infancy, T-cells produce antibodies for life span
Lymph nodes
filters for lymph, strategically placed throughout the body; there are 4 specific locations and all nodes are named for their location
Axillary Lymph nodes
located in armpit region, filter lymph from upper extremities or chest, most used to detect stage of malignancy of cancer
Cervical Lymph nodes
locatedinneck, used to diagnose Hodgkin’s disease in young adult males, filter lymph from head and neck
Inguinal Lymph nodes
locatedingroin,this is where bubonic plaque is present, filter lymph from lower extremities
Mesenteric Lymph nodes
locatedin intestines and filters lymph from the intestinal track or both large/small intestines. Used to detect stages of colon cancer
Lacteals
A special name given to lymph capillaries found only in the small intestine.
Chyle
is the waxy, milky substance which is formed between digestive fat and lymph.; flow of chyle begin in the lacteals.
Cistera Chyle
first lower enlarged portion of thoracic duct; Chyle coming from the small intestine and lymph coming from the lower extremities, stops here to mix
What are the only ducts of the lymph system that periodically dump into the blood stream?
- Right lymphatic duct
2. Thoracic duct
Right lymphatic duct
lymph that originates on the right side of the head and neck. The right upper extremities, and right side of the chest will eventually drain through this duct.
Thoracic duct
the largest lymph duct in the human body. 3/4 of the lymph in the body drains through this duct. Lymph coming from the left upper extremities, left side of the head and neck, left side of the chest, the entire abdominal cavity, and both lower extremities will drain through this duct.
Once lymph has gone into the right lymphatic duct or thoracic duct, it is now called what?
blood
Flow of Lymph
Capillaries- Sm. intestines (Lacteals) Vessels Nodes (Specify) Right Lymphatic Duct or Thoracic Duct (TD-1st Cisterna Chyle for Lacteals) Blood
pH
percentage of hydrogen ion in solution; 7.3-7.4 slightly alkaline