CV System Recap

Your hearts electrical system is made up of three parts

• Sinoatrial node

• Atrioventricular node

• The Septum

• Bundle of His and Purkinje fibres

Referred to as the heart's pacemaker’

• Ventricles

• Bundle of His and Purkinje fibres

• Atrioventricular node

• Sinoatrial node

It acts as a buffer or gate that slows down the signal from the SAN.

They are found in the walls of the ventricles and septum.

• SAN

• AVN

• Bundle of His

• Purkinje Fibres

Often rereferred to as the ‘flight or fight’ response.

Often referred to as the ‘rest and digest’ response.

Which CV function circulates carbon dioxide and lactate within the body, away from vital organs and muscles

• Delivers oxygen and Nutrients

• Removes Waste Products

• Fights against disease and infection

• Clotting Blood

What blood cell is constantly produced to destroy bacteria/virus in the body?

• White Blood Cells

• Red Blood Cells

• Platelets

• Plasma

Blood vessels widen increasing loss of heat which in return has a cooling effect.

A genetic heart condition that can cause sudden death due to the heart beat stopping

• Hypothermia (drop in body temperature)

• Hyperthermia (cause overheating)

• High and low blood pressure

• Sudden arrhythmic death syndrome