happens if the coronary artery gets an i) Name the four valves present in the heart. Mention their function and location.?
Answers
Answer:
tricuspid valve: located between the right atrium and the right ventricle.
pulmonary valve: located between the right ventricle and the pulmonary artery.
mitral valve: located between the left atrium and the left ventricle.
aortic valve: located between the left ventricle and the aorta.
Answer:
The heart has four valves - one for each chamber of the heart. The valves keep blood moving through the heart in the right direction.
The mitral valve and tricuspid valve are located between the atria (upper heart chambers) and the ventricles (lower heart chambers).
The aortic valve and pulmonic valve are located between the ventricles and the major blood vessels leaving the heart.
Explanation:
Mitral Valve
The valves are made of strong, thin flaps of tissue called leaflets or cusps.
The leaflets open to let blood move forward through the heart during half of the heartbeat. They close to keep blood from flowing backward during the other half of the heartbeat.
The mitral valve has only two leaflets; the aortic, pulmonic and tricuspid valves have three. The leaflets are attached to and supported by a ring of tough, fibrous tissue called the annulus. The annulus helps to maintain the proper shape of the valve.
The leaflets of the mitral and tricuspid valves are also supported by:
Chordae tendineae: tough, fibrous strings. These are similar to the strings supporting a parachute.
Papillary muscles: part of the inside walls of the ventricles.
The chordae tendineae and papillary muscles keep the leaflets stable to prevent blood from flowing backward.