Circulation in Grade 7

What is the main function of the heart?

• Digesting food

• Regulating body temperature

• Filtering waste from the blood

• Pumping blood to all parts of the body

Name the four chambers of the heart.

• upper atrium, lower atrium, upper ventricle, lower ventricle

• small atrium, big atrium, small ventricle, big ventricle

• front atrium, back atrium, front ventricle, back ventricle

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

Explain the role of the atria in the heart.

• The atria pump blood to the body and lungs

• The atria store blood for future use

• The atria regulate blood pressure in the heart

• The atria receive blood from the body and lungs and then pump it into the ventricles.

Describe the structure of the heart's valves.

• The heart's valves are made of metal rods

• The heart's valves are made of rubber bands

• The heart's valves are made of thin flaps of tissue called leaflets or cusps.

• The heart's valves are made of glass tubes

What is the purpose of the septum in the heart?

• To produce hormones

• To regulate body temperature

• To help with digestion

• To separate the left and right sides of the heart

How does blood flow through the heart?

• By flowing from the ventricles to the atria

• By bypassing the atria and directly entering the ventricles

• By flowing in a random pattern through the heart chambers

• In a specific pathway involving the atria, ventricles, and various valves.

What is the difference between pulmonary circulation and systemic circulation?

• Pulmonary circulation carries deoxygenated blood from the heart to the lungs and back to the heart, while systemic circulation carries oxygenated blood from the heart to the rest of the body and back to the heart.

• Pulmonary circulation carries oxygenated blood from the heart to the rest of the body and back to the heart, while systemic circulation carries deoxygenated blood from the heart to the lungs and back to the heart.

• Pulmonary circulation carries deoxygenated blood from the heart to the rest of the body and back to the heart, while systemic circulation carries oxygenated blood from the heart to the lungs and back to the heart.

• Pulmonary circulation carries oxygenated blood from the heart to the lungs and back to the heart, while systemic circulation carries deoxygenated blood from the heart to the rest of the body and back to the heart.

Explain the concept of cardiac cycle.

• The cardiac cycle is the sequence of events that occur during one heartbeat, including the contraction and relaxation of the heart chambers.

• The cardiac cycle is the expansion and contraction of the blood vessels

• The cardiac cycle is the movement of blood through the lungs

• The cardiac cycle is the process of blood clotting in the heart

What are the major blood vessels connected to the heart?

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

• aorta, pulmonary artery, superior vena cava, and inferior vena cava

• coronary artery, popliteal artery, radial artery, and mesenteric artery

• pulmonary vein, brachial artery, hepatic portal vein, and iliac artery

Describe the pathway of blood through the heart during circulation.

• Right atrium, left ventricle, pulmonary artery, lungs, pulmonary veins, right atrium, right ventricle, aorta

• Left atrium, right ventricle, pulmonary artery, lungs, pulmonary veins, right atrium, left ventricle, aorta

• Right atrium, right ventricle, pulmonary artery, lungs, pulmonary veins, left atrium, left ventricle, aorta

• Left atrium, left ventricle, pulmonary artery, lungs, pulmonary veins, right atrium, right ventricle, aorta