Vocab
What is cancer?
A disease in which cells reproduce uncontrollably
what causes childhood diseases?
Genetics and your environment
What do antibodies do?
They attach to the antigen and make it useless.
why is the skin and other barriers called the first line of defense?
because bacteria can't go through skin that hasn't been damaged.
Can people inherit genes that make it more likely to get a disease?
Yes
what is immunity.
The resistance to specific pathogens.
what is an infectious disease?
A disease caused by pathogens that can be carried from one person to another.
Name 2 first line defenses of the immune system.
Skin, respiratory system, digestive system, Circulatory system and Nervous system.
When do the second line defenses go into action.
When they get past the first line of defense
How can pathogens get to the respiratory system?
Through the air you breath
What is a vector
A disease carrying organism that doesn't develop the disease
What is a noninfectious disease?
A disease that cannot pass from person to person.
What is a B cell?
A cell that forms and mature in the bone marrow and mature in the thymus gland.
Why are the first and second line defenses called nonspecific?
Because they will go after anything they see.
how do pathogens enter your digestive sytem?
Through the food you eat.
what is pasteurization?
A process in which a food is heated to a certain temperature that kills most bacteria.
If there is a mother and a father that are carriers of the same disease and they have 4 children how many of them (usually) will be affected by that disease.
One
Name 1 of the second line defenses of the immune system.
White blood cells or inflammatory response
Why are the third line defenses called specific?
Because they go after the toughest pathogens.
Why would doctors take a rock and scrape your skull until a smooth hole was created?
They thought the virus would escape you.
What is passive immunity?
The introduction of antibodies that were produced outside the body.
What object had the disease cholera.
A water pump
Name both third line defenses of the immune system.
Antigens and antibodies
what is the function of the immune system?
To protect your body from viruses, bacteria and other harmful intruders.
What tick causes you to get a bullseye shaped rash on your arm or Lyme disease?
Blacklegged tick (deer tick)