The Cardiac cycle of the Heart.

The electrical system of the heart is also known as?

• The heart cycle

• The rhythm cycle

• The pulse cycle

• The cardiac cycle

The signal from the brain comes from

• medulla oblongata

• frontal lobe

• posterior lobe

• brain stem

Where is the SA node situated?

• top of right atrium

• bottom of right atrium

• top of left atrium

• top of right ventricle

Where is the AV node?

• Bottom of right atrium.

• bottom of left atrium

• top of left ventricle

• top of right ventricle

What's the function of the SA node?

• Send a signal across the atria that initiates contraction of the atriums which force blood out of the chambers

• Receives a signal, holds it for a fraction of a second so the chambers can fill with blood.

• Splits the signal into left and right sides of PF branches.

• Sends the signal to the PF and initiates chamber contraction which forces the blood out of the heart.

What's the function of the AV node?

• Receives a signal, holds it for a fraction of a second so chambers can fill with blood then releases the signal.

• Send a signal across the atria that initiates contraction of the atriums

• Splits the signal into left and right sides of PF branches.

• Sends the signal to the PF and initiates chamber contraction which forces the blood out of the heart.

What's the function of the bundle of hiss?

• Splits the signal into left and right sides of PF branches.

• Sends the signal to the PF and initiates chamber contraction which forces the blood out of the heart.

• Receives a signal, holds it for a fraction of a second so chambers can fill with blood.

• Send a signal across the atria that initiates contraction of the atriums

What's the function of the purkinje fibres

• Send the signal to the PF and initiates chamber contraction which forces the blood out of the heart.

• Splits the signal into left and right sides of PF branches.

• Receives a signal, holds it for a fraction of a second so chambers can fill with blood.

• Send a signal across the atria that initiates contraction of the atriums

What does ANS stand for?

• Autonomic nervous system

• Advanced nervous system

• Adaptive nervous system

• Advancing nervous system

What does the ANS system do?

• Regulates the bodys functions such as breathing and your heart beating

• Allows your skeletal muscles to contract.

• Regulates how much blood you have i.e. blood volume

• Allows you to control your heart rate.