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

Final common pathway of the degradation of organic compounds, Q. Why is the...

Q. Why is the Krebs cycle also called the final common pathway of the degradation of organic compounds? The Krebs cycle is known as the final common pathway of the degradation

What is eutrophication, What is eutrophication" describe its consequences o...

What is eutrophication" describe its consequences on the life of plants and animals living in such waters. Why is oxygen depletion in a eutrophicated water-body faster at nigh

Pathophysiology of chronic wasting disease, Q. Pathophysiology of Chronic w...

Q. Pathophysiology of Chronic wasting disease? We all know that heart attack i.e. myocardial infarction is not the beginning but a last stage representing acute clinical manife

Determine instruments that are required for sterilizations, Determine the I...

Determine the Instruments that are Required For Sterilization? The word sterilization is derived from the Latin word 'Sterilic' meaning unable to produce offsprings. Sterilizat

What are some diseases caused by abnormal gh secretion, What are some disea...

What are some diseases caused by abnormal GH secretion by the hypophysis? In childhood deficient GH secretion might be lead to delayed growth and in severe cases to nanism (dwa

Vertebrate eye - adult eye, Vertebrate Eye - Adult Eye There are no m...

Vertebrate Eye - Adult Eye There are no main differences in the structure or composition of the eyes among different vertebrates. This should be clear to you from the diagram

Determine the categories of drug and nutrient relationship, Determine the C...

Determine the Categories of Drug and nutrient relationship? Drug and nutrient relationship can be categorized into two aspects: 1. Effect of nutrition on drugs: the influenc

Why is the cleavage in mammals as simple homoplastic, Why do the sons of a ...

Why do the sons of a haemophiliac father never vary from this trait? Why is the cleavage in mammals referred as simple homoplastic?

What are the material used in biotolerant, Biotolerant Metals :- Co- Cr...

Biotolerant Metals :- Co- Cr Alloys, Stainless Steel, Gold,  niobium, tantalum Polymers:-  Polyethylene, polytetrafluorethylene, polyamide, polymethylmethacrylate, polyureth

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