Question

(i) Label the parts marked 1-6.
(ii) Which type of blood is carried by the blood vessel marked 2?
(iii) Name the membrane that covers the heart with its function.
(iv) Which chamber of the heart receives deoxygenated blood from the body?
(v) Which chamber of the heart receives oxygenated blood from the lungs?​

Answer 1

Answer:

2) The blood vessel marked 2 is superior vena cava. The vena cava is a vein. It carries deoxygenated blood from the upper region's body to the right atrium of the heart.

3) A double-layered membrane called the pericardium surrounds your heart like a sac. The outer layer of the pericardium surrounds the roots of your heart's major blood vessels and is attached by ligaments to your spinal column, diaphragm, and other parts of your body.

4)Differences in thickness of the heart chamber walls are due to variations in the amount of myocardium present, which reflects the amount of force each chamber is required to generate. The right atrium receives deoxygenated blood from systemic veins; the left atrium receives oxygenated blood from the pulmonary veins.

5) The left atrium and right atrium are the two upper chambers of the heart. The left atrium receives oxygenated blood from the lungs. The right atrium receives deoxygenated blood returning from other parts of the body. Valves connect the atria to the ventricles, the lower chambers

Explanation:

sorry can't figure out the 1st one

hope this help ;)