flashcards 3
(46 cards)
What is the immune system
The system that protects your body from dangerous things
Infectious disease
A bad disease
Pathogen
An organism that causes disease
What are 3 things that protect the body from pathogens
Skin, breathing passages, and mouth & stomach
What are white blood cells (WBC)
Cells that fight away disease
Iflammation
Increased blood flow
Fever
Increasing body temperature
Antigens
Unique surface makers
Antibody
Tag that attaches to the enemy
Lymphocytes
WBC´s that can distinguish 2 different types of pathogens
What is the nervous system
Receives and responds to information that has been sent
Stimulus
An environmental system that an organism reacts to
Response
What the body does to react to a stimulus
Neuron
Cell that carries information
Nerve impulse
Information being carried
What does a neuron consist of
Nucleus axon and dendrites
Dendrites
Carries impulse toward the cell body
Axon
Carries impulse away from the cell body
Nerve fibers
Axons and dendrites
Nerve
Cluster of nerve fibers
What does the endocrine system do
Produce hormones
Hypothalamus
Linked to nervous system
Pituitary gland
Controls growth
Thyroid gland
Produces the hormones
