Structures of the Heart
How many layers makes up the heart wall?
3
How many chambers does the heart consist of?
4
Each valve is formed by two or three flaps of tissue called _____ or _____. (either answer will be counted as correct)
cusps or leaflets
Term applied to the hearts ability to beat regularly.
Rhythmicity
How many steps are there in the process of blood flowing through the heart?
6
Surrounding the heart is a double-walled sac called the _________.
pericardium
The large vessels attatched to the heart that transport blood are called _____ _______.
great vessels
These are valves that regulate flow between ventricles and the great arteries.
semilunar valves
Contraction of the chambers of the heart.
systole
What produces the sound of your heart beating?
your heart valves opening and closing
What are the 3 layers of the heart wall?
endocardium, myocardium, epicardium
What are the two upper chambers of the heart called?
atria
pulmonary valve
The amount of blood ejected by the heart with each beat.
True or False; women are more likely to die from their first heart attack than men.
true
Which of the heart walls layers is the thickest and performs the work of the heart?
myocardium
What are the two lower chambers of the heart called?
ventricles
This valve prevents back flow from the aorta to the left ventricle.
aortic valve
States that the more the ventricle is stretched within its limits, the more it will fully contract.
Starling's law of the heart
True or false; heart disease kills twice as many women than ALL cancers combined.
true