Ventricular contraction, Biology

Assignment Help:

The mitral valve has an anterior and a posterior cusp. The anterior cusp is larger and is attached on the upper right part of the margin of the left AV orifice. The posterior cusp is attached to the lower left part. The anterior cusp intervenes between the Mitral and Aortic orifices. There is, therefore, a forceful blood flow on both surfaces of this cusp. The papillary muscles connected to the cusp of the mitral valve are also called the anterior and posterior. These terms are misleading. The anterior papillary muscle arises from the sterno-costal wall of the ventricle near the lower end. The posterior papillary muscle arises from the diaphragmatic wall near its anterior end. The two muscles run backwards almost parallel to each other and their origins are close together. The chordae tendinae arising from these papillary muscles pass to the adjoining part of the two cusps of the mitral valve.

The mitral valve closes during ventricular contraction (systole) and thus prevents blood from flowing back into the left atrium.The papillary muscles and chordae prevent the valve cusps from prolapsing into the left atrium during systole.All components of the valve apparatus are essential for the proper functioning of the mitral valve.


Related Discussions:- Ventricular contraction

Choice of graft material depends on, Choice of graft material depends on ...

Choice of graft material depends on - Its nature towards bone e.g., Osteoconductive or osteoinductive - Its architecture i.e., granular or block, pore si-e - Its origin -

Difference between diabetes mellitus and diabetes insipidus, Q. What is the...

Q. What is the difference between diabetes mellitus and diabetes insipidus? What are the characteristic signs of diabetes insipidus? Diabetes mellitus is the disease caused by

Indirect routes of disease transmission, Question 1: Define Survey. Lis...

Question 1: Define Survey. List out advantages of surveys. Brief up different survey methods Definition of survey. Advantages of surveys Different survey methods

Counselling technique of diabetic patient, Counselling a diabetic patient a...

Counselling a diabetic patient and their family members is very important as patient has to modify the life style and diet and needs family support. Therefore it is important for y

Leucosolenia, special character of leucosolenia

special character of leucosolenia

Botulism, B o tu l i s m It is a toxicity in chickens, turkeys, d...

B o tu l i s m It is a toxicity in chickens, turkeys, ducks and other aquatic birds caused by a bacterial toxin produced by anaerobic bacteria Clostridium botulinum mai

Variation of the photosynthesis effectiveness, Q. What is an example of a l...

Q. What is an example of a lab experiment that shows the variation of the photosynthesis effectiveness in relation to different photic energy frequencies to which the reaction is e

Necessity of transport in phloem, Necessity of Transport in Phloem Lea...

Necessity of Transport in Phloem Leaves produce photoassimilates and support various tissues including roots. The excess photoassimilates and metabolites stored in specialised

Fats requirement in diabetes, Q. Fats requirement in diabetes? Fats: Th...

Q. Fats requirement in diabetes? Fats: The total fat recommended by WHO is less than 30% of the total calories. However in view of the widely prevalent Asian paradox in India,

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd