Heart Anatomy and Physiology Worksheet

A single complete heart beat consists of which series of events?

• Atrial systole, ventricular systole, complete diastole

• Ventricular systole, atrial diastole, complete diastole

• Atrial diastole, ventricular diastole, atrial systole

• Ventricular systole, atrial systole, ventricular diastole

How is a cardiac impulse initiated?

• By the sinoatrial (SA) node

• By the atrioventricular (AV) node

• By the bundle of His

• By the Purkinje fibers

Cardiac impulse is conducted from the right atrium to the other heart chambers through:

• Purkinje fibers

• Bundle of His

• Atrioventricular (AV) node

• Sinoatrial (SA) node

An electrocardiogram is:

• A test that records the electrical activity of the heart

• A type of blood test

• A method to measure lung capacity

• A surgical procedure

Parasympathetic and sympathetic impulses help control heart rate by:

• Increasing and decreasing the heart rate, respectively

• Decreasing and increasing the heart rate, respectively

• Both increasing the heart rate

• Both decreasing the heart rate

How do changes in body temperature affect heart rate?

• Heart rate increases with higher body temperature and decreases with lower body temperature.

• Heart rate decreases with higher body temperature and increases with lower body temperature.

• Heart rate remains unchanged regardless of body temperature changes.

• Heart rate stops when body temperature changes.

Describe the effects on the heart of abnormal concentrations of potassium and calcium ions.

• Abnormal concentrations of potassium and calcium ions can disrupt the heart's rhythm and contractility.

• Abnormal concentrations of potassium and calcium ions have no effect on the heart.

• Abnormal concentrations of potassium and calcium ions only affect the lungs.

• Abnormal concentrations of potassium and calcium ions increase bone density.

The function of the superior vena cava is:

• to carry oxygenated blood from the lungs to the heart

• to carry deoxygenated blood from the upper body to the heart

• to pump blood from the heart to the rest of the body

• to filter waste from the blood

What is the function of the inferior vena cava?

• It carries oxygenated blood from the lungs to the heart.

• It carries deoxygenated blood from the lower body to the heart.

• It pumps blood from the heart to the rest of the body.

• It supplies blood to the brain.

The function of the right atrium is:

• to pump oxygenated blood to the body

• to receive deoxygenated blood from the body

• to pump blood to the lungs

• to receive oxygenated blood from the lungs