Medical Terminology Chapter 5

upper chamber of the heart

lower chamber of the heart

wall that that divides the heart into left and right sides

the inferior tip of the heart

control the flow of blood through the heart.  Tricuspid valve, pulmonary valve, mitral valve, and aortic valve

between the right atrium and right ventricle.  It has three triangular cusps.

Between the right ventricle and and the pulmonary trunk

between the left atrium and left ventricle.  It has two cusps adn is also known as the biscuspid valve.

between the left ventricle and the aorta.

ropelike connective tissues attached to the tricuspid and mitral valve leaflets.

the muscular layer of the heart.

innermost layer for cells that lines the atria, ventricles, and heart valves

outermost layer.  A membrane that surrounds the hear as the pericardial sac and secretes pericardial fluid.

contains the lungs and the mediastinum

and irregularly shaped central area between the lungs

aorta, superior vena cava, inferior vena cava, pulmonary arteries and veins

close relationship between the heart and the thoracic cavity

refers to the blood vessels associated with a particular organ

a smooth inner layer that promotes the flow of blood

the endothelium

the large blood vessels that branch into smaller arteries

smaller arteries

when the smooth muscle contracts constricting the lumen of the artery

when the smooth muscle relaxes, increasing the size of the lumen

the smallest blood vessels in the body

carry blood back to the heart from the body

small veins

the largest artery in the body

travels from the heart in a superior direction

branch off directly from the ascending aorta to the heart muscle

an inverted u-shaped segment

bring oxygenated blood to the neck, face, head and brain

bring oxygenated blood to the shoulders

in the area of the armpit.  divides into the brachial artery

brings blood to the upper arm, then into the radial and ulnar arteries

brings blood to the lower arm

brings blood to the lower arm

travels inferiorly through the thoracic cavity.  Brings blood to the esophagus, muscles between the ribs, diaphragm, upper spinal chord, and back

brings blood to the organs in the abdominopelvic cavity - stomach, liver, gallbladder, pancreas, spleen, small intestine, large intestine, adrenal glands, kidneys, ovaries testes, and the lower spinal cord.

bring blood to the hip and groin

brings blood to the upper leg

near the knee joint

brings blood to the front and back of the lower leg

brings blood to the outside of the lower leg

originate from the pulmonary trunk

carries blood from the head, neck, arms, and chest to the right atrium

carries blood from the rest of the body, except lungs, to the right atrium

carry blood fro the lungs to the left atrium of the heart

carries blood from the head to the superior vena cava

carries blood from the intestines to the liver

carry blood from the leg to the groin

carry blood from the leg to the vein

arteries, arterioles, capillaries, venules, veins everywhere in the body except in the lungs

arteries, arterioles, capillaries, venules, and veins going to, within, and coming from the lungs

a small oval opening on the septum between the atria that allows some of the oxygenated blood to enter the left side of the heart where it is immediately pumped out to the body

a connecting blood vessel between the pulmonary trunk and the aorta that allows the rest of the oxygenated blood to go into the right ventricle and pulmonary trunk but then diverts it to the aorta.

the pacemaker of the heart that initiates the electrical impulse that begins each heartbeat.

a small area in the right atrium near the interatrial septum.  Receives electrical impulses from the SA node

part of the conduction system of the heart after the AV node that splits into the right and left bundle branches

a network of nerves extending from the bundle branches

the contraction of the heart muscles

the rest period between heart muscle contractions