unit 4 Flashcards
erythrocytes
Red blood cells
Anucleated- have no nucleus
No organelles so there is more room for oxygen
Packed with Hemoglobin
5 million in 1 mL of blood
Hemoglobin
1 hemoglobin carries 4 oxygen
Made of iron
Leukocytes
White blood cells
Has a nucleus
Kills bacteria, viruses, and cancer cells
Can go in and out of blood vessels
4,000-11,000 white blood cells in 1 mL of blood
Can double WBC count in 1 hour
Hematopoiesis
Process of making blood
Has hemocytoblasts
Controlled by hormones (Erythropoietin, Thrombopoietin, Interleukin)
Hemocytoblasts
Stem cells that make blood
Erythropoietin
RBC
High altitude
Thrombopoietin
Platelets
Football players with bruises
Interleukin
WBC
sick
Pulmonary Circuit
Connects right ventricle to lung to left atrium
Systemic Circuit
Connects left ventricle to body to right atrium
4 chambers of the heart
Left ventricle, right ventricle, left atrium, right atrium
Tricuspid valve
Valve between right atrium and right ventricle
Bicuspid valve
Valve between left atrium and left ventricle
Pericardium
Loose sack around the heart
Epicardium
Tight membrane around heart
Myocardium
muscle layer
Endocardium
Inside layer of heart, smooth, blood slides through, no friction
LDL Cholesterol
Bad Cholesterol
HDL Cholesterol
Good Cholesterol
Arteries
Have muscles around it
Red
Bring blood away from the heart
Higher blood pressure
Veins
No muscles
Blue
Bring blood to the heart
Low blood pressure
One way valves
Varicose veins- valve breaks and fills with blood
