Circle of Willis
Circle of Willis: A critical arterial circle at the base of the brain. The circle of Willis receives all the blood that is pumped up the two internal carotid arteries that come up the front of the neck. All the principal arteries that supply the two halves of the brain (hemispheres) branch off from the circle of Willis.
Read Also:
- Circular breathing
Circular breathing: Inhaling through the nose and inflating the cheeks and neck with air at the same time. This technique is sometimes employed by singers or wind instrument players.
- Circulation
Circulation: In medicine, the movement of fluid through the body in a regular or circuitous course. The circulatory system, composed of the heart and blood vessels, functions to produce circulation. Heart failure is an example of a problem with circulation.
- Circulation, fetal
Circulation, fetal: The blood circulation in the fetus (an unborn baby). Before birth, blood from the fetal heart that is destined for the lungs is shunted away from the lungs through a short vessel called the ductus arteriosus and returned to the aorta. When this shunt is open, it is said to be a patent […]
- Circulatory
Circulatory: Having to do with circulation, the movement of fluid in a regular or circuitous course.
- Circulatory system
Circulatory system: The system that moves blood throughout the body. The circulatory system is composed of the heart, arteries, capillaries, and veins. This remarkable system transports oxygenated blood from the lungs and heart throughout the body via the arteries. The blood goes through the capillaries which are situated between the arteries and veins. And the […]