Show:
Neurons
WBCs
Pathogens
HIV/AIDS
Skin
100
What are the three types of neurons?
Sensory neurons, interneurons, and motor neurons
100
Macrophages, a type of phagocyte, kills pathogens by...
engulfing them
100
Doctors prescribe _______________ to a person with a ba bacterial infection
antibiotics
100
HIV attacks what type of cell?
T-cells
100
Skin is the first line of
defence!
200
Impulses or information carried from the CNS to the muscles or glands in the PNS are carried by which type of neuron?
Motor neurons
200
How do T-cells destroy pathogens?
They destroy infected body cells
200
Heat killed or weakened pathogens are injected into the body, this is an example of what?
A vaccine
200
A person with HIV or AIDS does not ususally die from the virus itself, but instead dies from what?
Other usually nonfatal diseases such as pneumonia, a cold, or TB. They die because their immune system is too weak to fight these pathogens.
200
What is the purpose of a scab?
To create a barrier from pathogens until the skin heals
300
Motor neurons are found in the ____________ nervous system.
PNS
300
Whiteblood cells can identify pathogens by their...
antigens (it is their identifier- like a face or uniform)
300
Once a person has been given a vaccine, what should happen?
They should create memory cells which will provide the person with immunity
300
What is the MAJOR difference between HIV and AIDS?
HIV is a virus, AIDS is a deficient immune system caused by a virus
300
The oil glands in skin serve what purpose for the immune system?
The oil inhibits the growth of bacteria
400
Which type of neuron is responsible for receiving the initial impulse from the environment?
Sensory neuron
400
Which cells produce antibodies? What do antibodies do?
B-cells They attach to the antigen of a pathogen inactivating them so they can be destroyed by phagocytes
400
Why can't the common cold be treated with antibiotics?
It is a viral infection
400
What are three ways that a person can get HIV?
body fluid to body fluid (Sexual intercouse), blood to blood (needles), Mother to child (breast milk/blood)
400
Describe inflammation.
Blood flow increases to the area causing it to turn red, hot, and become tender.
500
The CNS is composed of all of the neurons where?
In the brain and spinal cord
500
Which white blood cell attaches to pathogens to prevent them from attacking healthy cells?
antibodies
500
Why do most scientists think that antibiotic resistance is occuring?
Antibiotics are overused and over prescribed
500
As HIV _____________ in the body, the persons T-cells will _______________.
increases, decrease
500
Describe the healing of a wound.
Cut---bleed----blood clot forms---scab forms---skin cells divide and heal---scab falls off