-tricuspid valve
-pulmonary semilunar valve
-mitral/bicuspid valve
-aotic valve
Via abdominal aorta.
Aorta...brachiocephalic trunk...common carotid...external carotid...occipital artery...left occipital lobe
Pulmonary vein, left atrium, left ventricle, aorta, arteries ,then to the capillaries
The heart valves open when blood is flowing through. They close to prevent backflow.
The blood pressure and flow rate in veins is low. When the blood in them is moving upwards (e.g. in the legs) it can stagnate and may have a tendency to flow backwards in the vein. The valves prevent this back flow by closing. The blood pressure and flow rate in arteries is high. Blood flow in the arteries cannot stagnate.
Via abdominal aorta.
pulmonary and aorta valves.
prevent the back flow of blood from ventricle to aorta
veins
It prevents the blood already in the aorta from going back into the heart.
The aortic valve. When the left ventricle contracts, blood is ejected into the aorta. When the left ventricle relaxes the aortic valve stops blood from flowing from the aorta back into the left ventricle.
The pathway of metabolic waste from the aorta to the outside of the body of a fetal pig begins in the aorta. The abdominal aorta, renal arteries, and bladder excrete the waste to the outside of the fetal body.
The valve in this area is one of the semilunar valves called the aortic valve. These valves look like 3 little cups that collapse and allow blood flow from the left ventricle into the aorta (and from there it supplies a lot of your tissues and organs) when the heart pumps. After the blood moves into the aorta, the little cups expand and prevent the back-flow of blood back into the heart from the aorta.
The valve in this area is one of the semilunar valves called the aortic valve. These valves look like 3 little cups that collapse and allow blood flow from the left ventricle into the aorta (and from there it supplies a lot of your tissues and organs) when the heart pumps. After the blood moves into the aorta, the little cups expand and prevent the back-flow of blood back into the heart from the aorta.
Aorta...brachiocephalic trunk...common carotid...external carotid...occipital artery...left occipital lobe
Pulmonary vein, left atrium, left ventricle, aorta, arteries ,then to the capillaries
A blood circuit is the pathway blood travels from the heart out of the aorta to the rest of the body (oxygenated blood), then (deoxygenated blood) returns back to the heart to be sent to the lungs to exchange CO2 for oxygen then returns back to the starting point to leave the heart through the aorta again. A blood circuit is the pathway blood takes from a certain point then eventually returning back to that point.