lesson 5.1: the heart Flashcards
1
Q
how many parts make up the circulatory system?
A
3 main parts:
heart, blood vessels, blood.
2
Q
how big is your heart?
A
about the size of an adult fist
3
Q
how many times does your heart beat a day on average?
A
~100,000 times a day
4
Q
what are the areas where you can check your heart beat,
A
upper neck/below jaw (carotid artery) and on your wrist (radial artery)
5
Q
what is the myocardium?
A
the majority of the heart, mainly composed of cardiac muscle
6
Q
what is the pericardium?
A
a protective layer around the heart, made of epithelial and fibrous tissue
7
Q
there are two seperate pumps in the heart, what are they for?
A
one side pumps blood to the lungs (right) and one pumps to the whole body (left)
8
Q
what are the left and right sides of the heart divided by?
A
a septum
