Cardiovascular system Flashcards
Left heart is responsible for
Pumping blood to all the tissues of the body
Pathway of blood starting with left atrium
Left atrium -> left ventricle -> aorta -> arteries -> arterioles -> capillaries -> venules -> veins -> IVC and SVC -> right atrium -> right ventricle -> pulmonary arteries -> lungs -> pulmonary veins -> left atrium
Tricuspid valve
Right AV valve three leaflets prevents backflow
Bicuspid or mitral valve
Left AV valve has 2 leaflet prevents backflow
Pulmonic valve
Between the right ventricle and pulmonary arteries right semilunar valve
Aortic valve
On the left and separates the left ventricle from the aorta.
Pulmonic and aortic valves
prevent backflow of blood from the pulmonary arteries and aorta into the ventricle during ventricular relaxation (diastole)
AV valves
Prevent backflow from the ventricles into atria during contraction (systole)
Hemoglobins affinity for O2
Decreases as blood pH decreases
Bohr effect
Decreasing the pH in the blood decreases Hemoglobins affinity for O2
Osmotic pressure of surrounding tissue _________ __________ however the hydrostatic pressure at the __________ is greater than the hydrostatic pressure at the __________
Remains constant; arterial end; venous end
Fluid is reabsorbed at the
Venous end because the osmotic pressure exceeds the hydrostatic pressure
Relative lack of smooth muscle in venous walls allows
Stretching to store most of the blood in the body
Circulatory system pathway
Superiors vena cava -> right atrium -> right ventricle -> pulmonary artery -> lungs -> pulmonary veins -> left atrium -> left ventricle -> aorta
Blood type A
Antigen in Red Blood Cell:
Antibodies produced:
Antigen in red blood cell: A
Antibodies produced: anti- B
