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Heart
The heart is a major organ of the body that is found in the circulatory system. It pumps blood throughout the blood vessels. Questions related to the heart should be put here.
8,781 Questions
What is the Function of the tissue between the atria and ventricles?
The tissue between the atria and ventricles are mainly valves (tricuspid valve between the right A and right V, and the bicuspid/mitral valve between the left A and left V).
The function of these valves is to prevent backflow of blood (back into the atria), when the muscles (papillary muscles) attached to the valves contract following diastole (which is the relaxation of the heart -simply put-).
When these valves close, systole (which is the contraction of the ventricles) occurs. If the valves are not shut during systole all the blood will not be guided towards the big vessels (pulmonary artery in the case of the right ventricle, and the aorta in the case of the left ventricle) as they are supposed to. Instead some blood will "regurgitate", meaning that it will flow back into the atrium where it came from. This regurgitation is a leading cause of congestive heart failure.
What valves are on the left side of the heart?
The bicuspid or mitral valve and the aortic valve are on the left side of the heart. The mitral valve separates the left atrium and left ventricle, and the aortic valve is between the left atrium and the aorta.
Also spelled sinuatrial valve. It is the valve at the opening of the embryonic sinus venosus into the primordial right atrium. The sinus venosus later develops into part of the right atrium wall, the SA node and the coronary sinus.
What does the hearts muscular wall do?
a hearts muscular wall allows the heart to contract and expand as a person breathes... without the muscular wall a heart would not be able to beat... it would just collapse and a person would die... this is called heart failure... it is a common cause of death
Will 1 glass of water before going to bed avoid a stroke or heart attack?
After receiving an Email stating this, I looked it up on Snopes, and it's not true. Also, it's not good to drink cold water with meals, but hot water helps dissolve fats in food. Cold water does the opposite.
A porthole is the 'window ' in a ship's cabin, usually round and with a very tough sealable window cover.
What caused by rhythmic contractions of the heart?
The pulse is caused by the rhythmic contractions of the heart. The pulse can be measured at superficial arteries in teh body.
What are the locations and names of all heart valves?
- The tricuspid valve is between the right atrium and right ventricle.
- The pulmonary or pulmonic valve is between the right ventricle and the pulmonary artery.
- The mitral valve is between the left atrium and left ventricle.
- The aortic valve is between the left ventricle and the aorta.
Between the right atrium leading into the right ventricle is an atrioventricular valve called the Tricuspid valve. It is named for the three flaps from which it is made. Between the right ventricle and the pulmonary veins is a semilunar valve called the Pulmonary valve. Coming in between the left atrium and the left ventricle is an atrioventricular valve known as the Mitral valve (the shape is similar to the mitres worn by bishops) then in between the left ventricle and the aorta is a semilunar valve called the Aortic valve.
The term "dental organ" simply refers to the tooth and to the tissues that make up the tooth while it is still becoming a tooth. There are cells that produce enamel, dentin, and cementum, all specialized components necessary for the formation of the tooth.
How do you know if your distributor is working on a 1958 Mercedes Benz?
like all older dis. take it out. march were the roter is pointing at and take it out. now see if the gears are still on the dis. and not mest up. spin the dis. shaft and see if the point/s are good. replace. witht eh cap off the dis. crank it over and see if the roater is terning. if all is ok then it is fine for more info e-mail davethebenzman@yahoo.com
