Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
heart beats _________ times per minute
|
60-100
|
|
|
heart circulates ____________ of blood per minute
|
4-8 liters
|
|
|
cavity between the lungs in the thoracic cavity where the heart is located (above the diaphragm, below the sternum, in front of spine)
|
mediastinum
|
|
|
top of heart is:
bottom of heart is: |
base
apex |
|
|
RIGHT ATRIUM:
receives ___________ blood; is high in __________ concentration; delivers its blood to the ______________. |
deoxygenated;
CO2; right ventricle |
|
|
RIGHT VENTRICLE:
pumps _________ blood to the _______; high ________ concentration |
deoxygenated;
lungs; CO2 |
|
|
LEFT ATRIUM:
receiving chamber for oxygenated blood returning to ___________ from _____________; CO2 concentration is ___________; delivers its blood to the ___________. |
the heart;
the lungs; extremely low; left ventricle |
|
|
LEFT VENTRICLE:
pumps oxygenated blood to __________; known as the "____________"; CO2 concentration is __________. |
the entire body;
"major pumping chamber of the heart"; minimal |
|
|
Which part of the heart generates the highest pressures and why?
|
The LEFT VENTRICLE because pumps blood furthest (entire body) but also against greatest resistance- the blood pressure.
*It has THREE TIMES the muscle bulk of the right ventricle |
|
|
heart valves open:
|
only in the direction of blood flow
|
|
|
"lub-dub" comes from closure of the hearts valves: S1 &S2
|
S1- first heart sound; closure of mitral and tricuspid valves
S2- second heart sound; closure of aortic and pulmonic valves |
|
|
Btwn S1 & S2, the heart beats & expels its blood, called __________.
Btwn S2 and next S1, heart rests and fills with blood, called ___________. |
systole; diastole
*each heartbeat has an S1 and S2 |
