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

Zoology, #question. what is cloning.

#question. what is cloning.

Convey information and trends in a convenient fashion, Graphs are a way to ...

Graphs are a way to convey information and trends in a convenient fashion. For this week's Discussion Board you should search the internet for a graph related to biology. Provide u

Biotic potential curve and the real population growth curve, Q. What is the...

Q. What is the relationship between environmental resistance and the population growth according to the biotic potential curve and the real population growth curve? The differe

What are the consequences of failures during dna replication, One character...

One characteristic of the DNA molecule is its replication capability. What are the consequences of failures during DNA replication? Ideally a DNA molecule should replicate in a

Ways in which genetic recombination occurs during meiosis, Define two ways ...

Define two ways in which genetic recombination occurs during meiosis. Genetic recombination happens during crossing- over and independent assortment.

Explain some characteristic features of mucor, Explain some Characteristic ...

Explain some Characteristic Features of Mucor? 1. Stolons characteristics of Rhizopus are absent in Mucor. The aerial mycelium in Mucor consists of branched hyphae, which grow

Which kind of animals does the placenta exist, Q. In which kind of animals ...

Q. In which kind of animals does the placenta exist? What is its major function? True placenta is present in placental mammals. The placenta is formed from the chorion of th

Anaphase of karyokinesis, There is no splitting of the centromere. The ...

There is no splitting of the centromere. The kinetochore fibers contract and the spindle or pole fibers elongate , As a result homologous chromosomes of each pair rather than

Illustrate fundamental sexual life cycles, Q. What are the three fundamenta...

Q. What are the three fundamental sexual life cycles studied in Biology? Which of them corresponds to metagenesis? Which of them is the human life cycle? Sexual reproduction ma

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