What is the function of the circulatory system?
to carry oxygen and glucose to cells; to carry carbon dioxide away from cells
what is the function of the respiratory system?
bring oxygen into the body; to release carbon dioxide out of the body.
what is the function of the immune system?
name the path air takes as is travels through the respiratory system?
name the 4 chambers of the heart, and the order blood travels through them?
right atrium->right ventricle->(Lungs)->left atrium->left ventricle
name the 3 types of blood vessels, and tell what happens in each
arteries- carry blood away form heart
veins-carry blood towards the heart.
capillaries-where gases are exchanged
name the path blood takes as it travels through the circulatory system.
right atrium->right ventricle->lungs->left atrium->left ventricle
<-vein<-capillaries(exchange of 02 and CO2)<-arteries<-
name 4 blood types. which is the universal donor, and why?
A, B, AB-Universal Recipient, O-Universal Donor
name the four parts of blood and describe
white blood cells-fight disease, red blood cells-carry oxygen, platelets-form clots, plasma-liquid part of blood
Where are red blood cells made?
What are alveoli and what happens in them?
tiny grape-like sacs in the lungs surrounded by capillaries
What is the diaphragm?
a dome-shaped muscle that helps with breathing
What is another name for the windpipe?
What is another name for the voice box?
What is hemoglobin?
protein in red blood cells that binds oxygen and carries it through the body
What is the epiglottis?
a small flap of cartilage that covers the trachea when we eat and drink
What do the colors red, blue, and purple represent in the blood vessels?
red = oxygen-rich blood in veins, blue = oxygen-poor blood in arteries, purple = capillaries
What kinds of cells fight disease?
white blood cells
What do white blood cells do to bacteria?
surround them, engulf them, and eat them
Why are viruses hard for the body to fight?
they disguise themselves by mutating, and they hide inside cells while making copies of themselves
Why is cancer so hard to fight?
cancer is your own cells dividing out of control; the immune system does not see them as foreign invaders
Why do some people have allergies?
immune system sees something harmless as a foreign invader and launches an attack
What is a vaccine and how does it work?
a small amount of weakened virus injected into the body to make the immune system create antibodies so the real virus is killed if it enters the body
Why is it so hard to fight AIDS?
AIDS virus kills white blood cells called t-cells before the body can launch an attack against it.
What happens if you are given the wrong kind of blood in a transfusion?
Your blood clots up and you might die.