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Anatomy Ch 13
The Vascular System
| Term | Definition |
|---|---|
| Anastomosis | a connection or joining, especially of blood vessels |
| Circle of Willis | an arterial anastomosis that encircles the pituitary gland and supplies the brain with blood |
| ductus arteriosus | a short fetal blood vessel that takes most blood in the pulmonary artery to the aorta, bypassing the fetal lungs |
| foramen ovale | an opening in the interatrial septum of the fetal heart that permits blood to flow from the right to the left atrium |
| hepatic portal | the pathway of systemic circulation in which venous blood from the digestive organs and the spleen circulates through the liver before returning to the heart |
| perfusion | the circulation of blood to a body area or organ |
| peripheral resistance | the resistance of the blood vessels to the flow of blood |
| placenta | the organ formed in the uterus during pregnancy, made of both fetal and maternal tissue |
| precapillary sphincter | a smooth muscle cell at the beginning of a capillary network that regulates the flow of blood through the network |
| sinusoid | a large, very permeable capillary |
| umbilical arteries | the fetal blood vessels contained in the umbilical cord that carry deoxygenated blood from the fetus to the placenta |
| umbilical vein | the fetal blood vessel contained in the umbilical cord that carries oxygenated blood from the placenta to the fetus |
| venule | a small vein |
| anaphylactic shock | a type of circulatory shock that is the result of a massive allergic reaction |
| aneurysm | a localized sac or bubble that forms in a weak spot in the wall of a blood vessel, usually an artery |
| arteriosclerosis | the abnormal accumulation of lipids and other materials in the walls of arteries |
| hypertension | an abnormally high blood pressure, consistently above 130/85 mm Hg |
| hypovolemic shock | a type of circulatory shock caused by a decrease in blood volume |
| phlebitis | inflammation of a vein |
| pulse deficit | the condition in which the radial pulse count is lower than the rate of the heartbeat heard with a stethoscope |
| septic shock | a type of circulatory shock that is a consequence of a bacterial infection |
| varicose vein | an enlarged, abnormally dilated vein |
Created by:
Beina
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