Human or mammalian heart, Biology

HUMAN HEART (MAMMALIAN HEART) -

Position - Situated in thoracic cavity in pericardial cavity close to its front wall. Its broad base faces upward and backward. Its narrow apex faces downward, forward & slightly to the left side and rests on diaphragm.

Shape - Some conical.

Colour - Dark red.

Chamber - 4 (2 auricles & 2 ventricles)

Size - Roughy 12 x 9 cms.

Weight - Average wt. is about 300 gm. in male, 250 gm in female.

Covering - Covered by 2 pericardium. Inner serous pericardium consists of outer parital layer and inner visceral layer.

Outer fibrous pericardium is made up of white fibres.Between these two pericardial fluid (secreted by serous pericardium) present keeps the heart moist, allows it free movement, reduces friction & protect from external shocks.

Protective Cage - Sternum and ribs form protective cage.

Wall of Heart - In it three layers present. Epicardium, myocardium and endocardium. Epicardium is outer layer made up of squamous epithelium. (Mesothelium). Myocardium is made up of cardiac muscles. Endocardium consists of endothelial layer resting as a thin layer of loose connective tissue.

Posted Date: 10/2/2012 12:56:45 AM | Location : United States







Related Discussions:- Human or mammalian heart, Assignment Help, Ask Question on Human or mammalian heart, Get Answer, Expert's Help, Human or mammalian heart Discussions

Write discussion on Human or mammalian heart
Your posts are moderated
Related Questions

Explain Risk Assessment Risk Assessment   :  The scientific evaluation  of  known  or  potential adverse  health effects  resulting  from  human exposure to food borne hazards

Admission of Mentally Patient: Voluntary Basis  (Voluntary Admission)   Any adult person who considers himself  to be mentally ill, can  request  the Medical Officer for

Chlorine (Cl) - Micronutrients The role of Cl - in plant is not clearly understood. Cl - is required in Hill reaction, the water splitting reaction of photosystem II. In the

Q. How mineral salts participate in osmotic regulation? Osmotic pressure depends not on the nature of such particles and on the number of particles dissolved in a solution. Min

Q. What is Dyslipidemia or Hyperlipidemia? It has been known for over five decades now that dyslipidemia is associated with increased severity and prevalence of atherosclerosis

DEVELOPMENT OF GENETICS-A HISTORICAL PERSPECT As systematic study of genetics began, answers were sought to questions such as i) why are we like our parents? ii) why do org

It has been shown by prospective studies that Rheumatic heart disease (RHD) is linked to the occurrence of carditis during the first episode of ARF. If the first episode is accompa

Can you guys help with my homework assignment for Geology?

What is ISQ In resonance frequency analysis implant stability quotient (ISQ) is use to quantify the frequency measurement of implants within a range between 3500 and 8500 HZ. I