Question

a. The valves in the heart are anchored to the walls of the ventricles by. b. Valves responsible for the production of First heart sound. c. The pH of the blood d. The iron pigment found in the blood cells. e. Tiny blood vessels that carry blood to and from all body cells and connect arteries and veins.​

Answer 1

Answer:

The AV valves are anchored to the wall of the ventricle by chordae tendineae (heartstrings), small tendons that prevent backflow by stopping the valve leaflets from inverting. The chordae tendineae are inelastic and attached at one end to the papillary muscles and at the other end to the valve cusps.

First heart sound: caused by atrioventricular valves – Mitral (M) and Tricuspid (T).

Second heart sound caused by semilunar valves – Aortic (A) and Pulmonary/Pulmonic (P).

7.40

Haemoglobin

Capillaries

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