Transport in plant & animal

The 'Lub' sound of the heart's LUB DUB? are the....

• Atrioventricular valves closing
• Semilunar Valves closing
• Blood flowing through the Pulmonary Trunk and Aorta
• Blood Flowing down into the venticles

Systole refers to what action?

• Filing

• Pumping

The Vena Cava delivers blood to the heart into the.....

• left atrium

• right atrium

• left ventricle

• right ventricle

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 

An electrocardiogram measures what?

• The amount of pressure exerted on blood vessels.
• The electrical activity of the heart.
• How many times the heart contracts over time.
• The body's temperature caused by friction of blood in vessel.

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

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

Normal blood pressure is...

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

The 'Dub' sound of the heart's LUB DUB? are the....

• Atrioventricular valves closing
• Semilunar Valves closing
• Blood flowing through the Pulmonary Trunk and Aorta
• Blood Flowing down into the venticles

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

Blood plasma is straw colored watery fluid which makes up how many percent of the blood volume?

• 45 %

• 55%

• 46%

• 56%