External features of human heart, Biology

External features of human heart

  1. Human heart is a muscular, hollow organ situated slightly towards left side of the thorasic cavity.
  2. It is made up of special muscles called cardiac muscles.
  3. It is conical in shape with apex facing downwards and the broad base directed upwards.
  4. It is the size of the fist of the person.
  5. It is protected on all sides by rib cage and by vertebral column on the backside.
  6. Heart is enclosed in a double layered transparent membrane called pericardium.
  7. Pericardium is filled with a fluid called pericardial fluid, Which protects the heart from physical shocks, blows and frictions.
  8. External grooves indicate the internal division of the heart into four chambers. The anterior (upper) two chambers are auricles and the posterior (lower) two chambers are ventricles. These auricles and ventricles are separated by horizontal and vertical grooves (lines) and formed as four chambers.
  9. Venacavae bring deoxygenated blood to the heart. Aortae carry oxygenated blood from the heart.
Posted Date: 8/29/2012 9:20:43 AM | Location : United States







Related Discussions:- External features of human heart, Assignment Help, Ask Question on External features of human heart, Get Answer, Expert's Help, External features of human heart Discussions

Write discussion on External features of human heart
Your posts are moderated
Related Questions
Undescended Testes (Cryptorchidism) Undescended testes is a ccmmon disorder. It may be unilateral and may be classified as ectopic cryptorchidism, when the testes are normal

How do CAM plants vary from both C 3 and C 4 plants? CAM plants open their stomata at night, while C 3 and C 4 plants open their stomata during the day.

Q. In general what are the products and reagents of fermentation? In fermentation glucose sugar is degraded into pyruvic acid each glucose molecule forms two pyruvic acid molec

flying fish,cuttlefish,silverfish - pisces are correctly matched with taxonomic classification

Define Essentiality of Vitamins for Growth of Micro-Organism Vitamins are also essential in small amounts for cellular activities and growth. These are also the coenzymes for a

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Percent solutions are made on the basis of g/ml or ml/ml of diluent, and it is usually assumed that 1 ml of water = 1 g of water. For example, 20 g/100 ml of water or 200 g/1000 ml

Day-Neutral Plants  Besides SDP and LDP, those plants that flower irrespective of the length of light are called day-neutral plants. For these there is no specific requirement

One of the free-living, anaerobic nitrogen-fixer is: 1. Beijernickia 2. Rhodospirillum 3. Rhizobium 4. Azotobacter Rhodospirillum

Which of the following processes in capillaries in the lung assist in the removal of carbon dioxide from the body? A. Net flux of bicarbonate from plasma into red blood cells.