Cardiovascular system Flashcards
(26 cards)
What are the four compartments of the heart
- Right ventricle
- Right Atrium
- Left ventricle
- Left atrium
What are the sounds of the heart
lub dub
The _____ receives blood while the _____ ejects blood
atrium, ventricle
The first sound, lub, is _____
systole
The second sound, dub, is ______
diastole
The ______ system consists of the heart and many vessels
cardiovascular
the cardiovascular system consists of _____
the heart and many vessels
_____ circulation is a subdivision of the cardiovascular system and consists of all vessels with all organs
systemic
_____ circulation consists of vessels in the lungs where exchange of gases takes place
pulmonary
the heart serves as a _____ and is composed of ____ chambers
pump; 4
heart size is related to ______ and beats at an average of ____ beats per minute at rest
body size; 35
what range does the heart beat per minute at rest
28-44
one complete cycle of cardiac contraction and relaxation (heartbeat) is ______
the cardiac cycle
______ - relaxation of a chamber prior to and during filling
diastole
______ - contraction of a chamber that drives blood out of a chamber
systole
there are _____ distinct sounds during each cardiac cycle, they are _____
2; lub dub
T/F: the sounds of the heart are separated by a short interval followed by a longer pause, the pause increases with slower heart rate
true
What are factors affecting heart rate
exercise physical condition environmental temperature excitement pathological conditions age
What is the SA node? where is it? and what does it do
sinoatrial node; in the right atrium; coordinates the rhythmic contractions
______ are impulse conducting fibers
purkinje fibers
what is the AV node
atrioventricular node
______ from the SA node connect with the AV node
fibers
_____ carry blood away from the heart while _____ carry blood back toward the heart
arteries; veins
Secretariat had an abnormally large heart due to _____
the x factor
