Circulatory Flashcards
(15 cards)
Functions
Communication
Transportation
Protection
Pulmonary
Heart ➡ Lungs
Artery ➡ Deoxygenated
Vein ➡ Oxygenated
Systemic
Heart ➡ Body
Artery ➡ Oxygenated
Veins ➡ Deoxygenated
Intrinsic Rhythmicity
Sinoatrial Nerve
Atrioventricular Node
Atrioventricular Bundle
Parkinje Fibers
Contractions of ____ is systole
Ventricles
Atria relaxes
Vessels contract
Systolic BP
Relaxation of _____ is diastole
Ventricles
Atria contract Diastolic BP (atrium contract)
Cardiac Output =
CO = Stroke Volume X Heart Rate
Tunica Externa
Vessel wall
Tunica media
Smooth muscle
Thicker in arteries than veins
Tunica intima
Inner endothelium
Outer elastic layer
One-way
Arteries
Elastic and muscular
Bulge and recoil
Carry oxygenated blood away from heart
Capillaries
Functional unit
One cell layer thick
Greatest cross section diameter
Veins
One-way valve
Pumped through skeletal muscle contractions
Carry deoxygenated blood to heart
Adequate BP is necessary to _____
Perfuse tissue
Blood Pressure controls
Natural reflexes
Humoral Agents
Paracrine Agents
