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Bio12 Circulatory KM
SLS Bio12 Circulatory KM
| Term | Definition |
|---|---|
| antibody | a large Y-shape protein produced by B cells that is used by the immune system to identify and neutralize foreign objects such as bacteria and viruses. |
| antigen | a substance foreign to the body which, once in the body, attracts and is bound to by to a respective and specific antibody |
| arterial duct | a fetal vessel connecting the left pulmonary artery with the descending aorta; in the first 2 months after birth, it normally changes into a fibrous cord, the ligamentum arteriosum |
| atrioventricular valve | either of two heart valves through which blood flows from the atria to the ventricles; prevents return of blood to the atrium |
| autonomic nervous system | regulates the functions of our internal organs (the viscera) such as the heart, stomach and intestines |
| atrioventricular (AV) node | a section of nodal tissue that lies on the right side of the partition that divides the atria, near the bottom of the right atrium. |
| blood pressure | the pressure of the blood in the circulatory system, often measured for diagnosis since it is closely related to the force and rate of the heartbeat and the diameter and elasticity of the arterial walls. |
| blood velocity | the velocity or speed of blood in the aorta. It is also defined as the rate of change or alteration of the blood position in the body. |
| chordae tendineae | The chordae tendineae, or heart strings, are cord-like tendons that connect the papillary muscles to the tricuspid valve and the mitral valve in the heart. |
| diastolic pressure | the blood pressure (as measured by a sphygmomanometer) after the contraction of the heart while the chambers of the heart refill with blood |
| fetal circulation | the system of blood vessels and structures through which blood moves in a fetus |
| heart rate | pulse: the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health |
| hypertension | abnormally high blood pressure. |
| hypotension | abnormally low blood pressure. |
| lymph node | each of a number of small swellings in the lymphatic system where lymph is filtered and lymphocytes are formed. |
| lymphatic system | the network of vessels through which lymph drains from the tissues into the blood. |
| oval opening | in the septum between the right and left atria of the fetal heart |
| plasma | he colorless fluid part of blood, lymph, or milk, in which corpuscles or fat globules are suspended. |
| platelets | a small colorless disk-shaped cell fragment without a nucleus, found in large numbers in blood and involved in clotting. |
| pulmonary circulation | circulation of blood between the heart and the lungs |
| Purkinje fibres | The Purkinje fibers are located in the inner ventricular walls of the heart, just beneath the endocardium in a space called the subendocardium |
| sinoatrial (SA) node | a section of nodal tissue that is located in the upper wall of the right atrium. The SA node is also referred to as the pacemaker of the heart. |
| semi-lunar valve | A heart valve normally allows blood flow in only one direction through the heart. The four valves commonly represented in a mammalian heart determine the pathway of blood flow through the heart |
| septum | a partition separating two chambers, such as that between the nostrils or the chambers of the heart. |
| Systemic circulation | circulation that supplies blood to all the body except to the lungs |
| systolic pressure | the blood pressure (as measured by a sphygmomanometer) during the contraction of the left ventricle of the heart |
| umbilical artery | The umbilical artery is a paired artery that is found in the abdominal and pelvic regions. In the fetus, it extends into the umbilical cord. |
| umbilical vein | a vein in the umbilical cord; returns nutrient blood from the placenta to the fetus |
| Venous duct | The venous duct connects the umbilical arteries to the liver. |
Created by:
Kmutter
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