Mammalian heart, Biology

Assignment Help:

Mammalian Heart

The division of heart and separation of systemic and pulmonary circulation is complete in birds and mammals. The structure of mammalian heart and also how the volume of fluid pumped by the heart is adjusted according to the oxygen needs of the body.

774_Mammalian Heart.png

                                                                Figure: Mammalian Heart

The mammalian heart is a muscular organ covered by a tough fibrous sheath the pericardium. It consists of four chambers. Each half consists of a thin walled atrium and a thick walled ventricle. There are two sets of valves. Atrioventricular valve separates the cavities of the atrium and ventricle and prevents backflow of blood. Semilunar valves are present where the pulmonary artery leaves the right ventricle and the aorta leaves the left ventricle, preventing backflow. The contraction of heart is called systole and the relaxation, diastole. A heartbeat consists of a rhythmic contraction and relaxation of the whole muscle mass. The heart rests only during the short interval between contractions.


Related Discussions:- Mammalian heart

How do the climate affect the growth of population, Q. How do the availabil...

Q. How do the availability of water and light and the climate affect the growth of a population? The availability of light and water and the climate are abiotic factors that li

What do you mean by somites, Q. What do you mean by somites? Somites ar...

Q. What do you mean by somites? Somites are differentiated portions of mesodermal tissue longitudinally distributed along the embryo and the somites originate the muscle portio

Standard mrna and fibroblasts, You have discovered a novel alternatively sp...

You have discovered a novel alternatively spliced gene (gene X) and you wish to study its regulation in an in vitro splicing assay.  The alternatively spliced product retains intro

What is the mean of crp, CRP is a marker of systemic inflammation. As the r...

CRP is a marker of systemic inflammation. As the role of inflammation in the initiation and progression of atherosclerosis becomes better understood, CRP has gained prominence as a

Exchange list vs. food composition tables for menu planning, Define Exchang...

Define Exchange list vs. Food composition tables for menu planning? A dietician is frequently expected to make quick, yet reasonably accurate estimation of the nutritive value

Phylum Protozoa, Make a detailed study on Phylum Protozoa taking an example...

Make a detailed study on Phylum Protozoa taking an example with clear labeled diagrams.

Define the effect of scfa on sodium absorption, Define the effect of SCFA o...

Define the effect of SCFA on Sodium Absorption? SCFAs (short chain fatty acids) have a stimulatory effect on sodium absorption from colonic lumen. The unionized SCFA crosses th

Taxol, Paclitaxel is a anticancer drug. It stabilizes microtubules and as a...

Paclitaxel is a anticancer drug. It stabilizes microtubules and as a result, interferes with the normal breakdown of microtubules (you will know about microtubules in future lectur

S-gene, S-Gene The S-gene has been suggested to be a super gene comple...

S-Gene The S-gene has been suggested to be a super gene complex with several linked genes. It is supposed to have at least six (may he more) closely-linked genes which determi

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