Human Circulatory System Functions

The video tutorial provides a detailed overview of the human circulatory system, focusing on the heart, pulmonary circulation, and major arteries and veins. It begins with an introduction to the heart's chambers and valves, followed by an explanation of the pulmonary arteries and veins. The tutorial then covers the aortic arch and its branches, including the brachiocephalic trunk and carotid arteries. It further explores the subclavian and axillary arteries, and concludes with a discussion on the arteries and veins of the arm, such as the ulnar and radial arteries.

What is the function of the pulmonary semilunar valve?

• To prevent backflow into the right ventricle

• To prevent backflow into the left atrium

• To prevent backflow into the right atrium

• To prevent backflow into the left ventricle

Which artery branches off towards the head from the brachiocephalic trunk?

• Right common carotid artery

• Right subclavian artery

• Left subclavian artery

• Left common carotid artery

What is the main function of the aortic arch?

• To supply blood to the lungs

• To supply blood to the brain

• To supply blood to the arms and head

• To supply blood to the legs

Which artery is not a direct branch of the aorta?

• Brachiocephalic trunk

• Right subclavian artery

• Left common carotid artery

• Left subclavian artery

Where does the left common carotid artery branch into the external carotid artery?

• At the elbow

• Near the heart

• Behind the jaw

• In the armpit

What is the name of the artery when the left subclavian artery reaches the armpit?

• Brachial artery

• Axillary artery

• Ulnar artery

• Radial artery

Which artery runs along the ulna?

• Radial artery

• Brachial artery

• Ulnar artery

• Axillary artery

What is the corresponding vein for the radial artery?

• Ulnar vein

• Radial vein

• Brachial vein

• Axillary vein

Which vein corresponds to the brachial artery?

• Axillary vein

• Subclavian vein

• Brachial vein

• Radial vein

What is the role of the subclavian veins?

• To carry blood to the arms

• To carry blood to the lungs

• To carry blood to the heart

• To carry blood to the brain