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

When a fatty acid reacts with thew glycerol, When a fatty acid reacts with ...

When a fatty acid reacts with glycerol, the result is- Select one: a. Formation of an amide b. Formation of an ester c. Formation of hydrocarbon d. Formation of a th

What is adp phosphorylation, What is ADP phosphorylation? What respectively...

What is ADP phosphorylation? What respectively are photophosphorylation and oxidative phosphorylation? ADP phosphorylation is the addition of one inorganic phosphate in the mol

Cattle and buffalo diseases, C a ttle and buffalo diseases Rinderpes...

C a ttle and buffalo diseases Rinderpest: Rinderpest is the most destructive of the virus diseases of cloven-footed animals, viz. cattle, buffaloes, sheep, goats, pigs and

What is diagnostic wax up, Diagnostic Wax Up A diagnostic wax up should...

Diagnostic Wax Up A diagnostic wax up should be done by you or got done from a laboratory for each and every case regardless of the extent or difficulty level of the case as it

Stratification, Stratification On the basis of the variation in air tem...

Stratification On the basis of the variation in air temperature. the atmosphere has been divided vertically into four layers: (figure shown below) thee troposphere, stratospG,

What is the function of the testicles, Q. Concerning reproduction what is t...

Q. Concerning reproduction what is the function of the testicles? The testicles are the male gonad that is the organs where the production of gametes takes place. In human bein

Define cerebral hemisphere tissue, Q. Define cerebral hemisphere tissue? ...

Q. Define cerebral hemisphere tissue? CEREBRAL WHITE MATTER - The remaining cerebral hemisphere tissue is the deeper cerebral white matter (60% of cerebral volume) which includ

Describe the biological parameters of living organisms, Describe the Biolog...

Describe the Biological parameters of living organisms Biological parameters which include living organisms constitute an important component of soil.  Even though organisms fo

What is active site, What is Active site Active site : The site on  ...

What is Active site Active site : The site on  the surface of an enzyme to which  substrate or substrates bind.

Describe about defecation reflex, Q. Describe about defecation reflex? ...

Q. Describe about defecation reflex? An example of a reflex having an autonomic (and somatic) component is the DEFECATION REFLEX: The rectum is generally empty, but when fec

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