Medical Terminology Chapter 5 Flashcards
angi/o
vessel
ather/o
fatty substance
coron/o
heart
corpor/o
body
embol/o
plug
isch/o
to hold back
myocardi/o
heart muscle
phleb/o
vein
sept/o
wall
son/o
sound
sphygym/o
pulse
thromb/o
clot
varic/o
dilated vein
vas/o
vessle
ventricul/o
ventricle
-tonic
pertaining to tone
cardiovascular system is also called what?
circulatory system
What is the CV system composed of?
heart, blood vessels (arteries, capillaries, veins)
circulatory system is composed of what two parts?
pulmonary circulation and systemic circulation
Pulmonary circulation does what?
It is between the heart and lungs. It transports deoxygenated blood to the lungs to get oxygen and then back to the heart.
Systemic circulation does what?
Carries oxygenated blood away from the heart to the tissues and cells, and then back to the heart.
How many chambers does the heart have?
four
How many layers does the heart have?
Three
- endocardium (inner layer of the heart lining, very smooth, thin layer, serves to reduce friction)
- myocardium (thick, muscular layer, develops the pressure required to pump blood through the blood vessels)
- epicardium (outer layer. It is the visceral pericardium and the outer layer is the parietal pericardium)
Heart chambers…
two atria (upper) and two ventricles (lower). These chambers are divided into right & left sides by the interatrial septum and the interventricular septum
Are the ventricles the pumping chambers?
True
How many valves are in the heart?
Four valves
What do the valves do?
as restraining gates to control the direction of blood flow
Name the four valves.
Tricuspid valve; pulmonary valve; mitral valve; aortic valve
Tricuspid valve
an atrioventricular valve (AV). It controls the opening between the right atrium and the right ventricle. The valve has three leaflets or cusps
pulmonary valve
a semilunar valve. looks like a half moon. located between the right ventricle and the pulmonary artery. It prevents blood that has been ejected into the pulmonary artery from returning to the right ventricle as it relaxes.
mitral valve
also called bicuspid valve. two cusps. atrioventricular valve to the left ventricle and cannot go back up into the left atrium
aortic valve
semilunar valve; located between the left ventricle and the aorta. Blood leaves the left ventricle through this valve and cannot return to the left ventricle
Shortened version of blood flow
through the heart to the lungs where it receives oxygen; then goes back to the heart; and then out to the body tissue and parts
diastole
relaxed