A group of cells that prepare and release a chemical for use by the body
A weakened or inactive version of a pathogen that stimulates the body's production of antibodies that can destroy the pathogen
A chemical messenger released into the bloodstream that sends signals to distant cells, causing them to change their behavior in specific ways
Controls the pituitary gland
Produces hormones that regulate the basal metobolic rate
Produces a hormone that destroys bone to release calcium
Produces hormones that control many of the endocrine glands
Produces cortisol, which causes the liver to release glucose into the blood
Produces insulin, which enables glucose to enter the cells
Produces a hormone that stimulates the production of T-cells
The lymphatic system
What system fights disease?
The urinary system
What system regulates water balance and chemical levels in the blood?
The endocrine system
What system controls various functions by releasing hormones?
Lymph vessels and lymph nodes
What two kinds of basic structures make up the lymphatic sytem?
In the lymph nodes
Where is lymph cleaned, in the lymph vessels or in the lymph nodes?
The lacrimal glands
What gland produces tears?
The B-cells, the T-cells and the macrophages
What three kinds of cells in the lymph nodes fight infection?
What kind of cell in the lymph nodes produce antibodies?
What kind of cell helps the lymphatic system "remember" an infection so that it can fight the infection better next time?