T-Cells
What type of blood cells are T-Cells?
White.
How does our body protect us from bacteria and viruses?
Through antibodies that are produced by B-cells. Which bind to the invaders and mark it for macrophages to engulf.
What does blood plasma contain?
90% water, 10% blood protein, glucose, vitamins, minerals, dissolved gases, and waste.
Three body parts responsible for physical protection.
Skin, hair, eyelids.
What are the two types of chemical defenses?
Acid in the stomach and Lysosomes, an enzyme in the tears
What is their function?
It is to fight off invaders, microbes, and other nasty things.
What blood cells are responsible for fighting disease?
White blood cells, specifically T-cells, B cells, and leukocytes.
What is blood made of?
45% blood plasma, 50% water.
What part of the repertory system acts as a physical defense?
Cilia.
What are the different parts of the immune system?
Physical defense, Chemical defense and cellular defense.
What are the four types of T-cells?
Helper, killer, suppressor, and memory.
Name a disease that harms the immune system.
AIDS.
Three things red blood cells do for us.
Transportation, regulation, and protection.
Explain how skin acts a physical defense to invaders
Skin has a layer of dead cell and alongside with the periodic shedding provide a physical barrier.
How does leukemia develop?
The a white cell in the bone marrow that undergoes mutation which causes them to grow abnormally and lose function to normal white blood.
Name the functions of two different types of T-cells.
Helpers: First line of defense. They fight off the bad guys.
Killers kill off the invaders.
Suppressors: They end the killing.
Memory: They remember what happened so the immune system is stronger next time.
Name a disease that attacks the immune system and explain how it does.
AIDS. The disease kills off helper T-cells, thus weakening the body's ability to fight off disease.
Name three things white blood cells do for us.
Protection, fight off disease,
Why are physical defenses important?
It protected tissues that are susceptible to infection by invaders
How do viruses sneak into the immune system unnoticed?
By either finding a host cell to infect or in cases like AIDS they destroy helper T- Cells.
Explain what AIDS does to your helper T-cells.
They kill off your T-cells so your immune system can't fight off disease.
What is the purpose of vaccines and antibiotics?
Vaccines send decoys into your immune system so when the body fights off the real thing, it's a whole lot stronger. Antibiotics fight off bacteria your body can't fight off alone.
Three types of blood cells.
What are erythrocytes, leukocytes, and....?
What does the mucus have to protect the body from bacteria's and viruses?
The mucus traps pathogens and prevents them from entering the body.
How long can a blood cell live?
120 days