Cardiac Physiology PA School

Arteries

Arterioles

Capillaries

Venules

Veins

Velocity

Velocity is _________ in the aorta than in the sum of all the capillaries.

Cardiac Output =

Resistance =

Parallel Resistance

Series Resistance

Reynold's Number

Capacitance (Compliance)

The largest decrease in pressure...

Mean pressures in the:
Aorta
Arterioles
Capillaries
Vena cava

Systolic Pressure

Diastolic Pressure

Pulse Pressure

The most important determinant of pulse pressure is

Decreases in capacitance, cause ________ in pulse pressure.

Mean Arterial Pressure
(MAP)

P wave

PR interval

An increase in the conduction velocity by the ___________ nervous system, ___________ the PR interval.

A decrease in the conduction velocity by the ___________ nervous system, ___________ the PR interval.

QRS complex

QT interval

ST segment

T wave

Sinoatrial (SA) node

AV node

Conduction Velocity

Conduction velocity is fastest in the

Conduction velocity is slowest in the

Excitability

Chronotropic Effects

Dromotropic Effects

The SA node, atria, and AV node have __________ _________ innervation, but the ventricles do not.

The parasympathetic neurotransmitter, ACh

The sympathetic nervous system neurotransmitter is __________ and acts on ___________ receptors.

Norepinephrine has ____________ chronotropic and ___________ dromotropic effects on the heart.

Which organs have ONLY sympathetic innervation?

Where are α1 adrenergic receptors located and what is their mechanism of action?

Where are the α2 adrenergic receptors and what is their mechanism of action?

Where are the β1 adrenergic receptors located and what is their mechanism of action?

Where are the β2 adrenergic receptors located and what is their mechanism of action?

Where are the nicotinic (colinergic) receptors located and what is their mechanism of action?

Where are the muscarinic (cholinergic) receptors located and what is their mechanism of action?