Circulatory System Flashcards
Made up of cardiac muscles that are involuntary and contains a large number of nuclei in order to compensate for the large amount of energy, in the form of ATP, to pump blood throughout the body.
Heart
Ventricles are separated by the_____?
Interventricular septum
Muscles of the ventricles are thicker than that of the atria because?
Chambers are responsible for the pump of blood to the anterior and posterior portion of the body.
Left ventricle is thicker than the right because?
Responsible for pumping blood to the rest of the body
Prevents the backflow of blood to the previous chambers
Valves
Found in the right portion of the heart
Separates the right atrium and ventricle
Tricuspid valve
Found in the left portion of the heart
Separates the left atrium and ventricle
Bicuspid (Mitrial) valve
Rhythmic contraction of the heart is regulated by?
-Generates impulses
Sino-Atrial Node /SA Node
Pacemaker
Serves as the network that conveys blood all throughout the body.
Blood Vessels
Ability of the blood vessels to constrict or dilate
Vasomotion(Vasoconstriction/Vasodilation)
Exchange of gases and waste materials
Capillaries
Deoxygenated blood from the inferior and superior vena cava -> Right Atrium -> Tricuspid valve -> Right Ventricle -> Pulmonary artery -> Lungs -> Pulmonary vein -> Left atrium
Pulmonary Circulatory
Left atrium -> Bicuspid valve -> Left ventricle -> Aorta -> Rest of the body -> Superior/ Inferior vena cava -> Right atrium
Systemic Circulation
Types of semilunar valves
Pulmonary valves
Aortic valves
The impulse pause (__) at the atrioventricular (AV) node
0.1 s