What is the purpose of the spleen?
a. It is an organ whose many ducts clean the lymphatic system.
b. Assists the kidneys in processing insulin.
c. It is a ductless organ that filters blood.
d. It is the primary storage area for lymphocytes.
Question 2
The natural killer cells that circulate the body:
a. are present in infants and children, but disappear by middle age
b. engulf teratogens and viruses and devour them
c. push infected cells through the body to the spleen
d. inject diseased cells by injecting them with toxic chemicals
The Major Divisions of the Nervous System
Disorders of the Male Reproductive System
A gasoline direct-injection system injects fuel under high pressure directly into the combustion ...
A hole in the exhaust system can cause outside air (containing oxygen) to be drawn into the exhaust ...
The Digestive System
Female Reproductive System "الجهاز التناسلي للأنثى"