Explain the components of heart sounds, Biology

Explain the Components of heart sounds?

The first major component is associated with mitral valve closure (M 1) and is due to abrupt arrest of the leaflet motion when the cusps become fully closed. It is most prominent at cardiac apex when apex is occupied by LV. The second component is thought to be due to closure of Tricuspid valve (Tl). As the mitral tricuspid closure occur 0.02 - 0.03 second apart, it is very difficult to distinguish the two. When heard, it is confined to the lower left sternal edge. Though not heard but phonocardiogram record a third component. A low frequency sound( A) following length M1 and T, and coinciding with maximum opening of aortic cusps. The usual Al occurs 0.04-0.06 second after MI. When S 1 is split, its first component is normally louder.

Posted Date: 5/8/2013 2:44:34 AM | Location : United States

Related Discussions:- Explain the components of heart sounds, Assignment Help, Ask Question on Explain the components of heart sounds, Get Answer, Expert's Help, Explain the components of heart sounds Discussions

Write discussion on Explain the components of heart sounds
Your posts are moderated
Related Questions
What are mineral salts? Where in living beings can mineral salts are found? Mineral salts are simple inorganic substances made of metallic chemical elements, such as iron, sodi

explain the role of cyclic photophosphorylation in photosynthesis

Define Prevention of vitamin A deficiency? Since dietary inadequacy is the major cause for micronutrient deficiencies, the most rational approach to prevent these deficiencies

Define the meaning of Vital signs Vital signs are measures of different physiological statistics, often taken by health professionals, in order to assess the most basic body f

Define Importance of Nutrient and Drug Interaction? Certain foods, beverages, alcohol, caffeine, and even cigarettes can interact with medicines. This may make them less effect

What type of respiration does earthworm has ? In many complex animals, the cells of internal organs are distant from the outside environment; respiratory systems provide the passag

Hom o sapiens fossilis (CRO-MAGNO N MAN) - Fossils found from Cro-Magnon, France by Mac Gregor (1868) Replaced Neanderthal man about 35.000 years ago Sharp nose

Q. Why is it difficult to produce efficient vaccines against a viral infection like dengue and AIDS? It is difficult to make vaccines for dengue because there are four differen

Q. What is Normalisation of Inverted T-Waves? In patients with flat or inverted T-waves at rest, the evolution to an upright T-wave has been considered by some to be a sign of

1. What are the examples of helobial endosperm