the heart cycle

Identify part numbers 3 and 5.

• 3: right atrium; 5: aorta

• 3: left atrium; 5: aorta

• 3: right atrium; 5: pulmonary artery

• 3: left atrium; 5: pulmonary artery

Tags

NGSS.HS-LS1-2

Why are the walls of the left ventricle thicker than that of the right ventricle?

• The left ventricle must force blood into all the capillaries of the lungs 
• the left ventricle doesn't skip leg day
• This is false, the walls of the right ventricle are thicker
• Blood from the left ventricle is pumped throught the entire body 

A flap of tissue that prevents blood from flowing backward

• Aorta
• Atrium
• Septum
• Valve

Pumps the oxygenated blood to all parts of the body

• Right Ventricle
• Left Ventricle
• Right Atrium
• Left Atrium

Tags

NGSS.MS-LS1-3

The AV node is located at...

• A
• B
• C
• D

Normal blood pressure is...

• 120/80 mmHg
• 80/120 mmHg
• 140/90 mmHg
• 80/140 mmHg

For a blood pressure reading, the number on top measures...

• Diastolic Pressure
• Systolic Pressure
• Diastemic Pressure
• Systemic Pressure

Which contract in unison??

• Top chambers, then bottom chambers.
• Right Chambers, then the Left Chambers
• All four chambers beat in unison.

What is the definition of the Cardiac Cycle?

• the contraction of the atria
• the sequence of events that occur during one complete heartbeat
• the contraction and relaxation of the ventricles
• the circulation of blood in the heart

Aortic pressure at its peak during

• arterial systole

• isovolumetric contraction

• ventricular ejection

• isovolumetric relaxation