Cardiovascular Drugs Flashcards
one of the primary function is the delivery of oxygen, nutrients , hormones, electrolytes, and other essential to cells.
Circulatory system
The circulatory system is composed of:
Heart & Blood vessels
It is the pump that moves blood through the arterial tree.
Heart
It is the transport blood under high pressure to tissues.
Arteries
are control valves that regulate local blood flow.
Arterioles
are the sites for exchange of fluid, oxygen, carbon dioxide, nutrients, hormones, and wastes.
Capillaries
The one who collect blood from the capillaries.
Venules
Transport blood back to the heart.in addition, veins serve as a major reservoir for blood.
Veins
amount of tension ( stretch) applied to a muscle before contraction = force of venous return.
Preload
a load against which a muscle exerts its force= arterial pressure that the left ventricle overcomes to eject blood.
Afterload
It is controlled by the ANS
Heart Rate
It is determined by myocardial contractility (force with which the ventricles contract), cardiac afterload,and cardiac preload.
Stroke Volume
defined as a persistent systolic pressure of greater than 140 mmHg and/or a diastolic pressure of greater than 90mmHg.
Hypertension
determined by the product of cardiac out and systemic vascular resistance.
Blood pressure
amount of blood ejected from the left ventricle and measured in Lpm.
Cardiac output