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When vessels which function as blood reservoirs when sympathetic nerve impulses cause constriction of their walls?

These vessels are called venous sinuses. They act as blood reservoirs and are part of the venous or return portion of the cardiovascular system.


Do both arterial and venous vessels have valves?

No, only venous vessels have valves. Valves in veins help prevent the backflow of blood and aid in promoting blood flow back to the heart. Arterial vessels do not have valves because blood in arteries is under higher pressure and flows away from the heart.


What are the largest vessels in the venous system?

Superior vena cava and the inferior vena cava


What is the function of venous valves?

Valves aid in venous return by preventing the back flow of blood.


Which vessels have valves?

capillary blood sugar vs venous blood sdugar


What is venous system of frog?

It is a set of blood vessels which carry blood towards the heart from the all parts of body.These vessels are called veins.


What is the function Blind Spot?

The blind spot does not have or serve a function. The blind spot is cause by a lack of receptors in the location where a person's optic nerve and blood vessels leave the eye.


Describe the position of accessible veins for venous access in relation to arteries nerves and other anatomical structures?

describ the position of venous blood vessels in relation to arteries, nerves and other structures


What function do handmaids serve?

Handmaids in Margaret Atwood's "The Handmaid's Tale" serve the function of bearing children for high-ranking individuals in a dystopian society where fertility rates have drastically declined. They are essentially treated as vessels for reproduction and have little to no agency over their own bodies or lives.


What is the function of the arachnoid villi?

it reabsorbs cerebrospinal fluid and returns it to the venous circulation


What is a minute blood vessel between the arterial and venous systems?

Very fine blood vessels are called capillaries.


What vetebrae serve as passageways for blood vessels leading to the brain?

Transverse foramina of cervical vertebrae serve as passageways for blood vessels leading to the brain.