Heart & Lung Connection Formative

What is the oxygen level in blood that most likely came from the left ventricle?

• 90.0 mm Hg

• 92.5 mm Hg

• 94.9 mm Hg

• 96.5 mm Hg

Which statement is true regarding arteries and veins?

• All arteries carry oxygen-rich blood.

• All veins carry oxygen-rich blood.

• All arteries except the pulmonary artery carry oxygen-rich blood.

• Veins have thicker walls than arteries.

What is the primary function of arteries?

• To carry oxygen-rich blood away from the heart to the body.

• To carry carbon dioxide-rich blood to the heart.

• To filter blood and remove waste products.

• To regulate blood pressure and flow.

What is the structure of alveoli?

• Small tubes in the lungs that transport air

• Tiny air sacs in the lungs where gas exchange occurs, surrounded by capillaries.

• Large chambers in the heart that pump blood

• Muscles that control breathing movements.

What is the pathway of blood flow through the heart?

• Blood flows from the body into the left atrium, then to the left ventricle, to the lungs via the pulmonary vein, back to the right atrium, and out to the body through the aorta.

• Blood flows from the body into the right atrium, then to the right ventricle, to the lungs via the pulmonary artery, back to the left atrium, into the left ventricle, and out to the body through the aorta.

• Blood flows from the body into the right ventricle, then to the left atrium, to the lungs via the pulmonary artery, back to the right atrium, and out to the body through the aorta.

• Blood flows from the body into the left ventricle, then to the right atrium, to the lungs via the pulmonary artery, back to the left atrium, and out to the body through the pulmonary vein.

What type of blood vessel surrounds alveoli in the lungs?

• Arteries

• Veins

• Capillaries

• Lymphatic vessels

What is the role of the diaphragm in respiration?

• It helps to filter air before it enters the lungs.

• It contracts and relaxes to help draw air into and push air out of the lungs.

• It produces sound by vibrating as air passes through it.

• It regulates the temperature of the air entering the lungs.

What is the average oxygen level in arterial blood?

• 50-70 mm Hg

• 75-100 mm Hg

• 100-120 mm Hg

• 120-150 mm Hg

What is the significance of the pulmonary artery?

• It is the only artery that carries deoxygenated blood from the heart to the lungs.

• It is responsible for carrying oxygenated blood from the lungs to the heart.

• It is the main artery that supplies blood to the brain.

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

What is the role of capillaries in the circulatory system?

• To transport blood away from the heart.

• To facilitate the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

• To store blood for later use.

• To regulate blood pressure.