Heart Knowledge

What are the four chambers of the heart?

• Front chamber, back chamber, top chamber, bottom chamber

• Upper chamber, lower chamber, middle chamber, side chamber

• Atrium 1, atrium 2, ventricle 1, ventricle 2

• Left atrium, right atrium, left ventricle, and right ventricle

Explain the function of the atria and ventricles in the heart.

• The atria and ventricles both receive blood from the body and lungs.

• The atria receive blood from the body and lungs, while the ventricles pump blood to the body and lungs.

• The atria pump blood to the body and lungs, while the ventricles receive blood from the body and lungs.

• The atria and ventricles are not involved in the circulation of blood in the heart.

What is the average resting heart rate for an adult?

• 60-100 beats per minute

• 20-40 beats per minute

• 120-150 beats per minute

• 80-120 beats per minute

How does the autonomic nervous system regulate heart rate?

• By releasing hormones into the bloodstream

• Through the digestive and respiratory systems

• Through the sympathetic and parasympathetic branches

• By controlling the body temperature

What is the role of the sinoatrial node in heart rate regulation?

• Storing excess electrical impulses in the heart

• Producing hormones for heart rate regulation

• Initiating electrical impulses for heart rate regulation

• Filtering blood in the heart chambers

Describe the pathway of blood flow through the heart.

• Left atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary artery, lungs, pulmonary veins, right atrium, mitral valve, left ventricle, aortic valve, aorta

• Right atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary artery, lungs, pulmonary veins, left atrium, mitral valve, left ventricle, aortic valve, aorta

• Right atrium, mitral valve, left ventricle, aortic valve, aorta, left atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary artery, lungs, pulmonary veins

• Pulmonary veins, left atrium, mitral valve, left ventricle, aortic valve, aorta, right atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary artery, lungs

What is the purpose of the heart valves?

• To aid in digestion

• To ensure one-directional blood flow through the heart chambers

• To regulate body temperature

• To produce hormones

What are the main blood vessels connected to the heart?

• hepatic vein, splenic artery, mesenteric artery, and popliteal artery

• aorta, pulmonary artery, pulmonary veins, and vena cava

• femoral artery, jugular vein, carotid artery, and renal vein

• coronary artery, brachial artery, radial artery, and iliac artery

What is the role of the pericardium in protecting the heart?

• It provides oxygen to the heart

• It acts as a protective sac around the heart.

• It helps regulate the heart rate

• It stores excess blood for the heart

Explain the difference between systole and diastole in the cardiac cycle.

• Systole and diastole both refer to the phase of the cardiac cycle when the heart muscle relaxes and allows the chambers to fill with blood.

• Systole is the phase of the cardiac cycle when the heart muscle relaxes, while diastole is the phase when the heart muscle contracts and pumps blood out of the chambers.

• Systole is the phase of the cardiac cycle when the heart muscle contracts and pumps blood out of the chambers, while diastole is the phase when the heart muscle relaxes and allows the chambers to fill with blood.

• Systole is when the heart muscle relaxes and allows the chambers to fill with blood, while diastole is when the heart muscle contracts and pumps blood out of the chambers.