The diagram given below represents a section of the human heart. Answer the questions that follow:
(a) Which parts of heart are in the relaxation phase? Give a reason to
support your answer.
(b) Label the parts numbered 1 to 4 in the diagram. What type of blood flows through them.
(c) Name all the four types of valves found in our heart.
(d) Name the blood vessels that supply oxygenated blood to the heart muscles.
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artia and ventricle are relaxed 2)a) pulmonary artery b) pulmonary vein c) superior vena cave d) aorta deoxygenated to oxygenated blood flow 2) 1) the tricuspid valve 2) pulmonary valve 3) mitral valve 4) aortic valve 4) pulmonary vein and pulmonary artery
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