External features of human heart, Biology

Assignment Help:

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.

Related Discussions:- External features of human heart

Class Pisces, need different types of information about fishes and their pi...

need different types of information about fishes and their pictures

Define estimation of blood thiamin levels - thiamin status, Define Estimati...

Define Estimation of Blood Thiamin Levels - Thiamin Status? The levels of free thiamin and its phosphoesters in whole blood and erythrocytes are measured using high- performanc

Two gases are likely to be diffusing in and out of the cell, When a cell is...

When a cell is respiring  aerobically, which two gases are likely to be diffusing in and out of the cell, and in which direction will they be diffusing?   When a cell is res

Pre-embryonic development, Pre-Embryonic Development We had said in t...

Pre-Embryonic Development We had said in the starting of the unit that prenatal development can be divided into two phases, embryonic and foetal. The embryonic phase of devel

Explain the obligatory losses of nutrients, Explain the Obligatory Losses o...

Explain the Obligatory Losses of Nutrients? Obligatory losses of nutrient are defined as 'the losses that occur when an individual is put on a diet free of that nutrient'. For

Functions of respiratory pigments, Functions of Respiratory Pigments A...

Functions of Respiratory Pigments As you have learnt in the preceding sub-sections, the pigments are the carrier of oxygen. In the nonexistence of respiratory pigments the blo

Density of water in relation to temperature, Density of Water in Relation t...

Density of Water in Relation to Temperature On cooling, water molecules come closer which makes water dense. It is most dense at 4°C (Figure shown below) but it is still a liqu

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