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SLS-B12circulationS
SLS Bio 12 Circulation SJ
| Question | Answer |
|---|---|
| anterior vena cava | |
| anterior vena cava | drains blood from upper body into left ventricle |
| antibody | a blood protein produced in response to and counteracting a specific antigen. they combine chemically with substances that the body recognizes as alien, such as bacteria, viruses, and foreign substances in the blood. |
| antigen | a toxin or other foreign substance that induces an immune response in the body, esp. the production of antibodies |
| aorta | main artery in the body; oxygenated blood from ventricle to the body |
| arterial duct | A fetal vessel connecting the left pulmonary artery with the descending aorta |
| atrioventricular valve | valve normally allows blood flow in only one direction through the heart; one between each atrium and ventricle. prevents backflow of blood |
| autonomic nervous system | the part of the nervous system responsible for control of the bodily functions not consciously directed, such as breathing, the heartbeat, and digestive processes. |
| AV node | is a part of the electrical control system of the heart that coordinates the top of the heart. It electrically connects atrial and ventricular chambers |
| blood | the red liquid that circulates in the arteries and veins of humans and other vertebrate animals, carrying oxygen to and carbon dioxide from the tissues of the body. |
| 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. |
| blood vessel | a tubular structure carrying blood through the tissues and organs; a vein, artery, or capillary. |
| capillary-tissue fluid exchange | fluids, gasses, nutrients, and wastes are exchanged between the blood and body tissues by diffusion b/c walls of capillaries are thin |
| carotid artery | either of two major arteries of the neck and head; branches from the aorta |
| 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. Chordae tendineae are approximately 80% collagen, while the remaining 20% is made up of elastin and endothelial cells. |
| coronary artery | an artery supplying blood to the heart. |
| coronary vein | any of several veins that drain blood from the heart wall and empty into the coronary sinus. |
| diastolic pressure | Blood pressure, sometimes referred to as arterial blood pressure, is the pressure exerted by circulating blood upon the walls of blood vessels, and is one of the principal vital signs |
| fetal circulation | the system of blood vessels and structures through which blood moves in a fetus |
| heart rate | the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health |
| hepatic portal vein | vein conveying blood to the liver from the spleen, stomach, pancreas, and intestines. |
| hepatic vein | a vein that drains the liver; empties into the vena cava |
| hypertension | BP is higher than normal all of the time, strain on heart, capillaries can burst leading to heart failure |
| hypotension | BP lower than normal, can result from fluid/blood loss, HR is increase and blood vessels are constricted |
| iliac artery | one of the large arteries supplying blood to the pelvis and legs |
| iliac vein | one of three veins draining the pelvic area |
| jugular vien | any of several large veins in the neck, carrying blood from the head and face. |
| left atrium | pumps blood into left ventricle |
| left ventricle | pumps blood into aorta to systemic system |
| lymph capillaries | main purpose of these vessels is to drain excess tissue fluids from around the cell ready to be filtered and returned to the venous circulation |
| lymph node | each of a number of small swellings in the lymphatic system where lymph is filtered and lymphocytes are formed. |
| lymphatic system | he network of vessels through which lymph drains from the tissues into the blood. |
| lymphatic veins | are thin walled, valved structures that carry lymph. |
| mesenteric artery | one of two branches of the aorta that pass between the two layers of the mesentery to the intestines |
| oval opening | The oval opening in the septum between the right and left atria of the fetal heart |
| plasma | the 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 |
| posterior vena cava | is the large vein that carries de-oxygenated blood from the lower half of the body into the right atrium of the heart. |
| pulmonary arteries | the artery carrying blood from the right ventricle of the heart to the lungs for oxygenation. |
| pulmonary circulation | circulation of blood between the heart and the lungs |
| pulmonary trunk | the artery that carries venous blood from the right ventricle of the heart and divides into the right and left pulmonary arteries |
| pulmonary veins | a vein carrying oxygenated blood from the lungs to the left atrium of the heart. |
| purkinje fibres | located inner ventricular walls of heart beneath the endocardium in the subendocardium These fibers consist of specialized cardiomyocytes that are able to conduct cardiac action potentials quickly and efficiently than any other cells in the heart. |
| red blood cell | less technical term for erythrocyte. |
| renal artery | an artery originating from the abdominal aorta and supplying the kidneys and adrenal glands and ureters |
| renal vein | veins that accompany renal arteries; open into the vena cava at the level of the 2nd lumbar vertebra |
| right atrium | the right upper chamber of the heart that receives blood from the venae cavae and coronary sinus |
| right ventricle | the chamber on the right side of the heart that receives venous blood from the right atrium and pumps it into the pulmonary trunk |
| SA node | pacemaker: a specialized bit of heart tissue that controls the heartbeat |
| semi-lunar valve | Either of two valves, one located at the opening of the aorta and the other at the opening of the pulmonary artery, each consisting of three crescent-shaped cusps and serving to prevent blood from flowing back into the ventricles. |
| septum | a partition separating two chambers, such as that between the nostrils or the chambers of the heart. |
| subclavian artery | either of two arteries that supply blood to the neck and arms |
| subclavian vein | a continuation of the axillary vein; joins the internal jugular to form the brachiocephalic vein |
| 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 | 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 |
| valve | a device for controlling the passage of fluid through a pipe or duct, esp. an automatic device allowing movement in one direction only. |
| veins | any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart. |
| venous duct | a major blood channel that develops through the embryonic liver from the left umbilical vein to the inferior vena cava. |
| vessel wall | a tubular structure that transports such body fluids as blood and lymph |
| white blood cell | less technical term for leukocyte. |
Created by:
sjackson2
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