Circulation MM Flashcards
What moves blood away from the heart?
Arteries
What moves blood towards the heart?
Veins
What happens to the RA if a person has problems with lungs like COPD, pulmonary hypertension or diabetes?
RA becomes larger
What is the actual muscle of the heart called?
Myocardium
The lining of the thoracic cavity is called?
Parietal
What nerve controls the diaphragm?
Phrenic Nerve
What layer of the vessel surrounds the lumen in blood vessel?
Tunica Intima
T/F Tunica Media is a smooth muscle?
True
T/F Veins when empty collapse
True
T/F Arteries are always open?
True
What are the largest arteries?
Aorta, subclavian and iliac
What is the default position of capillary beds, open or close?
close
What percentage of blood do you have at anytime to run your body?
40%
What are the sphincters called that open or close capillary beds?
Precapillary sphincters
Veins are on the high or low pressure side?
low