Aortic and pulmonary orifices, Biology

Assignment Help:

These circular orifices are located at the upper ends of the outflow parts of the left and right ventricles respectively. The pulmonary orifice which is 3 cms, is 0.5 cm larger than the aortic orifice. The aortic orifice is placed in front and to the right of the mitral orifice. The pulmonary orifice is placed above and to the left of the tricuspid orifice and the aortic orifice intervening between them. The pulmonary orifice is guarded by the pulmonary valve and the aortic orifice by the aortic valve. Each valve consists of three semilunar cusps. Each cusp is triangular. It has a convex edge which is attached to the part of the margin of the orifice. It has two free margins that meet at the apex of the cusp. Each cusp consists of a double fold of endocardium with some fibrous tissue in it. The region of the apex is thickened to form a nodule while crescentric parts near the free edges are called lunules.

903_Aortic and Pulmonary Orifices.png


Related Discussions:- Aortic and pulmonary orifices

Direct approach to counseling, Q. Direct Approach to counseling? The di...

Q. Direct Approach to counseling? The direct approach to counselling is also called as the problem-solving approach. The counsellor collects relevant information which aims to

Alive and something that is a living organism, Is there a difference betwee...

Is there a difference between something that is alive and something that is a living organism?

Explain prophylaxis - sexually transmitted infections, Prophylaxis Many...

Prophylaxis Many experts recommend that sexually assaulted adults and adolescents be given treatment to prevent sexually transmitted infections, including therapy for gonorrhea

Explain the occurrence of vitamin B2, Explain the Occurrence of vitamin B 2...

Explain the Occurrence of vitamin B 2 Vitamin B 2 (riboflavin) occurs in nature almost exclusively in a combined form i.e. esterified with phosphoric acid as riboflavin-5'-ph

Define unsaturated fatty acids, Unsaturated fatty  acids Unsaturated  f...

Unsaturated fatty  acids Unsaturated  fatty  acids  are  liquid at  room  temperature  and  are characterized by having one or more double bonds. Fatty acids having two or more

Properties and functions of synapses, Properties and Functions of Synapses ...

Properties and Functions of Synapses There is an interval between depolarisation of the presynaptic terminal and the earliest appearance of a postsynaptic response. This inter

Filaments of a sarcomere in a skeletal muscle, Filaments of a sarcomere in ...

Filaments of a sarcomere in a skeletal muscle When the overlap between the thin and thick filaments of a sarcomere in a skeletal muscle is decreasing,    A. The total lengt

#zoology, #what is naturalistic theory?

#what is naturalistic theory?

What is arterial switch operation explain briefly, What is arterial switch ...

What is arterial switch operation explain briefly? Arterial Switch Operation: Switching the Great arteries to restore the normal Ventriculoarterial connections. The coronary

Determine about the accommodation of eye, Determine about the Accommodation...

Determine about the Accommodation of eye Accommodation is the ability of the overall refracting power of the eye to change to clearly view objects at different distances. This

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