Define blood type.
A classification of blood based on the presence of antigens on red blood cells.
What are the four main blood types?
A, B, AB, and O.
True or false: Type O blood is considered a universal donor.
TRUE
Type O negative can be given to any blood type in emergencies.
Fill in the blank: The Rh factor determines if blood type is _______ or _______.
positive or negative.
What does AB+ blood type indicate?
Presence of A and B antigens, and Rh factor.
Define antigen.
A substance that triggers an immune response, found on the surface of cells.
True or false: Blood type compatibility is crucial for transfusions.
TRUE
Incompatible blood transfusions can cause serious reactions.
What is the role of red blood cells?
To transport oxygen from the lungs to the body and carbon dioxide back.
Fill in the blank: Plasma makes up about _______ percent of blood volume.
55 percent.
Define white blood cells.
Cells of the immune system that help fight infections and diseases.
What is the function of platelets?
To assist in blood clotting and prevent bleeding.
True or false: Blood is classified as a type of connective tissue.
TRUE
Blood connects different parts of the body and transports nutrients.
What is the function of hemoglobin?
To carry oxygen in red blood cells.
Fill in the blank: The heart has _______ chambers.
four chambers.
Define arteries.
Blood vessels that carry oxygenated blood away from the heart.
What do veins do?
Carry deoxygenated blood back to the heart.
True or false: The aorta is the largest artery in the body.
TRUE
It distributes oxygenated blood to the body.
What is the function of capillaries?
To facilitate the exchange of oxygen, carbon dioxide, and nutrients.
Fill in the blank: Blood pressure is measured in _______ and _______.
systolic and diastolic.
Define circulatory system.
The system that circulates blood and lymph through the body.
What is the function of the spleen?
To filter blood and help fight infections.
True or false: The liver produces bile for fat digestion.
TRUE
Bile is stored in the gallbladder before being released.
What is the function of the kidneys?
To filter waste from the blood and produce urine.
Fill in the blank: The pulmonary arteries carry blood to the _______.
lungs.
