Exam 2 Study Guide Flashcards
Atrioventricular (AV) valves
Prevent backflow between atria and ventricles (tricuspid/bicuspid valve)
Semilunar valves
Control blood flow between ventricles and major arteries (pulmonary and aortic valves).
P Wave
Atrial Depolartization
QRS complex
Ventricular depolarization and atrial repolarization
T wave
Ventricular repolarization
Hemoglobin function
- Hemoglobin binds oxygen in the lungs and releases it in tissues.
- It can also bind carbon dioxide to form carbaminohemoglobin.
Erythropoiesis
Stimulated by low oxygen levels or increase erythropoietin levels; Red blood cells (RBC’s) are produced in the bone marrow.
Neutrophils
Most abundant leukocytes, act as first responders to infections
Eosinophils
Increase in response to parasitic infections and allergies.
Ventricular systole
Contraction of the ventricles pumps blood into arteries
Ventricular diastole
Ventricles relax and fill with blood from the atria
Systematic circulation
Supplies oxygen-rich blood to the body and returns
oxygen-poor blood to the heart.