Lab Pratical 1 Flashcards
(17 cards)
Hematocrit
% of blood volume occupied by RBC’s
Agglutination
the clumping of red blood cells within the body
Polycythemia
too many RBC’s and blood get sticky which resists flow
Anemia
too few RBC’s and results in hypoxia (lack of oxygen to the tissues)
Hemoglobin
a protein found in red blood cells that is responsible for carrying oxygen throughout the body
Antigen
a substance that triggers an immune response in the body
Antibodies
proteins produced by the immune system to identify and neutralize harmful substances called antigens
Arteries
carry blood AWAY FROM heart
Veins
carry blood back TOWARD your heart
Hormones
chemical messengers made by endocrine glands released into the blood or interstitial fluid that regulate metabolic activity of target cells
Describe the blood typing process and interpret blood typing results.
The test to determine your blood group is called ABO typing. Your blood sample is mixed with antibodies against type A and B blood. Then, the sample is checked to see whether or not the blood cells stick together. If blood cells stick together, it means the blood reacted with one of the antibodies.
Type A
Agglutinogen: A Antigen
Agglutinin: Anti-B antibody
Blood type that can be received: A, O
Type B
Agglutinogen: B Antigen
Agglutinin: Anti-A antibody
Blood type that can be received: B, O
Type AB
Agglutinogen: A and B antigens
Agglutinin: no antibody
Blood type that can be received: A, B, AB, O Universal RECIPIENT
Type O
Agglutinogen: neither A and B antigen
Agglutinin: anti-A and anti-B antibodies
Blood type that can be received: O, Universal DONOR
Explain how heart sounds are heard and what the sounds represent.
Heart sounds are heard when the blood flowing through the heart chambers causes vibrations as the heart valves open and close during the cardiac cycle
The “lub” (first heart sound, S1) representing the closure of the mitral and tricuspid valves
The “dub” (second heart sound, S2) signifying the closure of the aortic and pulmonary valves
Describe how a pulse is taken and what pulse represents.
A pulse is the heart rate. It’s the number of times the heart beats in one minute.
The pulse can be measured using the radial artery in the wrist or the carotid artery in the neck.
