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As the heart pumps, the arteries carry oxygen-rich blood (shown in red) away from the heart and toward the body's tissues and vital organs. These include the brain, liver, kidneys, stomach, and muscles, including the heart muscle itself. At the same time, the veins carry oxygen-poor blood (shown in blue) from the tissues back toward the heart. From there, it passes to the lungs to receive more oxygen. This cycle repeats itself when oxygen-rich blood returns to the heart from the lungs, which pumps it throughout the body.
Reviewed ByReview Date: 11/08/2010
Glenn Gandelman, MD, MPH, FACC Assistant Clinical Professor of Medicine at New York Medical College, and in private practice specializing in cardiovascular disease in Greenwich, CT. Review provided by VeriMed Healthcare Network. Previously reviewed by David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine (8/15/2010).
What else can I help you with?
Site where resistance to blood flow is the greatest?
The resistance to blood flow is greatest in arterioles, which are small blood vessels that regulate blood flow to tissues and organs. Arterioles have a high resistance due to their small diameter and ability to constrict or dilate to control blood flow distribution. This resistance plays a key role in regulating blood pressure and blood flow to different parts of the body.
What is the difference between vasodilate and vasoconstrict?
Vasodilation is the widening of blood vessels, resulting in increased blood flow and decreased blood pressure. Vasoconstriction is the narrowing of blood vessels, leading to decreased blood flow and increased blood pressure. Both play important roles in regulating blood flow and maintaining homeostasis in the body.
Is blood flow inversely proportional to resistance?
Yes, blood flow is inversely proportional to resistance in the cardiovascular system. When resistance increases, blood flow decreases, and vice versa. This relationship is governed by Poiseuille's Law.
What is Doppler ultrasonography?
Doppler ultrasonography is a non-invasive imaging technique that measures the speed and direction of blood flow in the body's blood vessels. It is commonly used to assess blood flow in arteries and veins, helping to diagnose conditions like blood clots, blockages, and narrowing of blood vessels. Doppler ultrasound can also provide valuable information about the function of organs and tissues by measuring blood flow to specific areas.
Decreased peripheral resistance to blood flow?
Decreased peripheral resistance to blood flow is typically associated with vasodilation, which occurs when the smooth muscle in blood vessel walls relaxes. This can lead to increased blood flow to tissues and decreased blood pressure. Vasodilation can be caused by factors such as the release of nitric oxide or certain medications.
What is the blood flow in the body?
The flow or blood
What is blood flow resistance?
The resistance of blood flow is what?
What is blood flow generated by?
The flow of blood times the resistance of the blood vessels.
Is blood flow faster in veins?
Blood flow is faster in arteries than in veins. Blood flow in veins is lower pressure.
Does alcohol stimulate blood flow?
Yes, it stimulates blood flow.
What are the three major circuits of the blood?
Systemic circuit- blood flow in the body Coronary circuit- blood flow in the heart Pulmonary circuit - blood flow in the lungs
CAN BLOOD FLOW BACKWARDS AND FORWARDS IN THE BLOOD CELLS?
Blood cells are a part of blood. Blood is not a part of blood cells. Blood can't flow backward and forward within blood cells. Blood cells can flow backward and forward within blood.
What does the process of blood flow with your body called?
blood flow is called circulation
What type of blood flow is needed for muscle tissue?
The type of blood flow that is needed for muscle tissue is skeletal muscle blood flow. Skeletal muscle blood flow is important for both voluntary and involuntary muscles.
What is the flow of blood through your heart and around your body called?
Circulation of the blood
If the cause of erections is blood flow why do you not have a constant erection?
Erections are not constant because the body has mechanisms that regulate blood flow to the penis. When you are not sexually aroused, blood flow to the penis is restricted by the contraction of blood vessels, preventing a continuous erection. Erections occur in response to sexual stimulation when these blood vessels relax, allowing increased blood flow to the penis.
What is a word that means controlling blood flow?
Hemostasis means controlling the flow of blood.
