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Blood flows through arteries (from the heart), veins (to the heart) and capillaries. The heart pumps oxygenated blood out of the aorta and it circulates throughout the body providing oxygen to the muscles and organs (both voluntary and involuntary). The deoxygenated blood returns to the heart through veins. Veins have valves to stop blood flowing in the wrong direction. So the blood returns to the heart though both the superior and inferior vena cava and is then carried to the lungs where it is re-oxygenated, carried back to the heart and again pumped out the aorta. All in all the heart makes blood flow.

A blood flow is the blood pumped from the heart to all parts of body through arteries and flow back through veins.

A blood flow can also be normal menstruation, or a uterus vaginal problem.

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Rhett Strosin

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2y ago

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Blood normally flows from the capillareies directly to what?

Blood normally flows from the capillaries directly to the venules, which are small blood vessels that connect the capillaries to the larger veins in the circulatory system.


How does blood circulate in most mollusks?

* Oxygenated hemolymph (blood), coming from ctenidia, flows into heart's atria, * then it flows into heart's ventricle, which pumps the hemolymph into arteries, * from arteries, hemolymph flows into the hemocoel; * then it's caught again inside veins and brought directly into afferent ctenidial vessels or into accessory branchial hearts, which pump it inside ctenidia again, for oxygenation. Hemolymph flows also into the pericardium, the celomatic membrane wich contains the systemic heart, and, from it, hemolymph reaches and flows into the excretory ducts.


Where does the blood flow out of you when you get your period?

Blood flows out of the uterus through the cervix and then out of the body through the vagina during menstruation.


Is it true that with veins that the blood flows from small vessels into even smaller ones?

No. Veins are the portion of the circulatory system that is responsible for returning blood from the body to the heart. Thus blood flow in veins starts at the smallest capillary vessel and moves to larger vessels.


What direction does blood flow in the pulmonary veins?

Arteries and veins are anatomical terms. Arteries Always carry blood Away from the heart and veins carry blood back. If these are veins coming to the heart from the lungs, they must be rich in oxygen.