The structure and anatomy of the heart

 

The heart is a muscular organ that is as big as our fist, the heart is located just behind and slightly left of the breast bone. The heart works like a pump, It pumps blood through the network of arteries and veins.arteries.veins and heart all together are called the transportation system of our body, because nutrients, water, oxygen, and carbon dioxides are transported through the blood. Since Co2 and O2 are transported through the heart so it is designed to have four chambers.

The heart gets deoxygenated blood from all parts of the body and pumps out oxygenated blood to all parts of our body.

The heart has different chambers to prevent the oxygen-rich blood from mixing with the blood containing carbon dioxide.

You can study how does the heart function through a step by step way.

1. Oxygen-rich blood from the lungs comes to the thin-walled upper chamber of the heart on the left, the left atrium.

2. The left atrium dilates when it is collecting the blood from the lungs. The left atrium then contracts while  next chamber, the left ventricle expands so that the blood is transferred into it.

3. The left ventricle then contracts and thus blood is pumped out to all body parts.

4. Deoxygenated blood comes from the body to the upper chamber on the right, the right atrium.

5. Right ventricle receives the deoxygenated blood through a valve from the right atrium and then sends it to the lungs through the pulmonary artery for oxygenation of blood.

Click for online shopping

Future Study Point.Deal: Cloths, Laptops, Computers, Mobiles, Shoes etc

You can also study

Human  reproductive systems of Male & Family

Human digestive system structure and function

Modes of reproduction used by single organisms-Asexual reproductions

Types of plant tissues

The structure and anatomy of the Heart

Anatomy of the Human brain-Class 10 CBSE

NEET Sylabus and its preparation

Structure Of Heart

The heart is made up of three layers of cardiac tissue

• Epicardium
• Myocardium
• Endocardium

These layers are surrounded by the pericardium a thin outer lining protecting the heart. The two small upper chambers are atriums and the two larger lower chambers are the ventricles, there left and right sides of the heart are separated by a wall of muscle known as the septum.

The mechanism of the heart

The right atrium receives deoxygenated blood from the veins, vena cava from the upper and lower parts of the body, and then pumps it to the right ventricle.

The right ventricle receives blood from the right atrium and pumps it to the lungs through the pulmonary artery

The left atrium receives the oxygenated blood from pulmonary veins. The right ventricle receives  blood from the left atrium.,The right ventricle which is the strongest chamber of the heart creates our blood pressure due to vigorous contractions.

The right ventricle sends oxygen-rich blood to all parts of the body through the aorta. the biggest artery of the circulatory system.

Please follow us on Pinterest

Pinterest future study poin

Q-How Does The Exchange Of Gas Takes Place In Fishes?

Ans. Fishes have only two chambers to their hearts and the blood is pumped to the gills, is oxygenated there, and passes directly to the rest of the body. Thus, blood goes only once through the heart in the fish during one cycle of passage through the body.

Q-Why does not oxygenated blood and deoxygenated blood mix together in blood vessels or in the heart?

Ans. The oxygenated blood is received by the left atrium through the pulmonary vein then it is sent to the left ventricle through a valve that maintains the unidirectional flow of blood then it is pumped out through the biggest blood vessel aorta . Deoxygenated blood is received by the right atrium and then it is sent to the right ventricle through a valve between them making the one-directional flow of the blood. The left and right part of the heart is separated by a muscular layer known as the septum that prevents the mixing of blood. The base of the pulmonary vein, pulmonary artery, and aorta is connected to the chambers of the heart through the valves that prevent backflow of the current.

Important Science Notes for Class 9 and 10 grade

Class 10 CBSE Science Notes

Class 10 Biology Viva Voce Questions and Answers for CBSE Board 2020-21

Class 10 chemistry Viva Voce Questions and Answers

Class 10 Physics Viva Voce Questions and Answers

Class 10 Chemistry Practical Based Questions and Answers

What are the physical and chemical properties of metals?

Type of Chemical Reactions with Complete detail

Chemical properties of Acids and Bases-A note for grade 10 students

What is pH value and its importance in everyday life.

Ozone Layer and How it is Getting depleted.

Myopia, Hypermetropia and Presbyopia

Human eye structure and its function

Electrical resistance and conductance

Electric Current and Heating effect of Electric Current

What is a potential difference across an electric field ?

Myopia, Hypermetropia and Presbyopia

Difference between soaps and detergents

Why do the star twinkle but planets don’t

Light reflection, refraction, scattering, and dispersion

Extraction of metals as per the activity series

Ionic and covalent compounds and the difference between them

Food chain and food web in an ecosystem

What is God particle ?

Class 9 CBSE Science Notes

Three Laws of Motion: Class 9 CBSE

Evoporation,Vapourization and Latent heat -Class 9 CBSE notes

What is an atom,molecule and atomicity of a substance?

How to determine Valency,net charge of an ion and Molecular formula of a substance.

Thrust and Pressure : Difference

The Complete Detail of Archimedes Principal

Average Speed and Average Velocity: Differences

How to evaluate recoil velocity of gun

If energy is conserved then why do we need to save it for future generations?

Molar mass,molecular mass and mole concept

What is second law of of motion ?

What is universal law of gravitational force

You can compensate us by donating any amount of money for our survival

Our Paytm NO 9891436286

NCERT Solutions of Science and Maths for Class 9,10,11 and 12

NCERT Solutions for class 9 maths

Chapter 1- Number System	Chapter 9-Areas of parallelogram and triangles
Chapter 2-Polynomial	Chapter 10-Circles
Chapter 3- Coordinate Geometry	Chapter 11-Construction
Chapter 4- Linear equations in two variables	Chapter 12-Heron’s Formula
Chapter 5- Introduction to Euclid’s Geometry	Chapter 13-Surface Areas and Volumes
Chapter 6-Lines and Angles	Chapter 14-Statistics
Chapter 7-Triangles	Chapter 15-Probability
Chapter 8- Quadrilateral

NCERT Solutions for class 9 science 

Chapter 1-Matter in our surroundings	Chapter 9- Force and laws of motion
Chapter 2-Is matter around us pure?	Chapter 10- Gravitation
Chapter3- Atoms and Molecules	Chapter 11- Work and Energy
Chapter 4-Structure of the Atom	Chapter 12- Sound
Chapter 5-Fundamental unit of life	Chapter 13-Why do we fall ill ?
Chapter 6- Tissues	Chapter 14- Natural Resources
Chapter 7- Diversity in living organism	Chapter 15-Improvement in food resources
Chapter 8- Motion	Last years question papers & sample papers

CBSE Class 9-Question paper of science 2020 with solutions

CBSE Class 9-Sample paper of science

CBSE Class 9-Unsolved question paper of science 2019

NCERT Solutions for class 10 maths

Chapter 1-Real number	Chapter 9-Some application of Trigonometry
Chapter 2-Polynomial	Chapter 10-Circles
Chapter 3-Linear equations	Chapter 11- Construction
Chapter 4- Quadratic equations	Chapter 12-Area related to circle
Chapter 5-Arithmetic Progression	Chapter 13-Surface areas and Volume
Chapter 6-Triangle	Chapter 14-Statistics
Chapter 7- Co-ordinate geometry	Chapter 15-Probability
Chapter 8-Trigonometry

CBSE Class 10-Question paper of maths 2021 with solutions

CBSE Class 10-Half yearly question paper of maths 2020 with solutions

CBSE Class 10 -Question paper of maths 2020 with solutions

CBSE Class 10-Question paper of maths 2019 with solutions

NCERT Solutions for Class 10 Science

Chapter 1- Chemical reactions and equations	Chapter 9- Heredity and Evolution
Chapter 2- Acid, Base and Salt	Chapter 10- Light reflection and refraction
Chapter 3- Metals and Non-Metals	Chapter 11- Human eye and colorful world
Chapter 4- Carbon and its Compounds	Chapter 12- Electricity
Chapter 5-Periodic classification of elements	Chapter 13-Magnetic effect of electric current
Chapter 6- Life Process	Chapter 14-Sources of Energy
Chapter 7-Control and Coordination	Chapter 15-Environment
Chapter 8- How do organisms reproduce?	Chapter 16-Management of Natural Resources

Solutions of previous year’s science & maths question papers

Solutions of class 10 Science question paper 2019 CBSE

CBSE Class 10 science question paper 2020 SET -3 solutions

NCERT Solutions for class 11 maths

Chapter 1-Sets	Chapter 9-Sequences and Series
Chapter 2- Relations and functions	Chapter 10- Straight Lines
Chapter 3- Trigonometry	Chapter 11-Conic Sections
Chapter 4-Principle of mathematical induction	Chapter 12-Introduction to three Dimensional Geometry
Chapter 5-Complex numbers	Chapter 13- Limits and Derivatives
Chapter 6- Linear Inequalities	Chapter 14-Mathematical Reasoning
Chapter 7- Permutations and Combinations	Chapter 15- Statistics
Chapter 8- Binomial Theorem	Chapter 16- Probability

CBSE Class 11-Question paper of maths 2015

CBSE Class 11 – Second unit test of maths 2021 with solutions

NCERT solutions for class 12 maths

Chapter 1-Relations and Functions	Chapter 9-Differential Equations
Chapter 2-Inverse Trigonometric Functions	Chapter 10-Vector Algebra
Chapter 3-Matrices	Chapter 11 – Three Dimensional Geometry
Chapter 4-Determinants	Chapter 12-Linear Programming
Chapter 5- Continuity and Differentiability	Chapter 13-Probability
Chapter 6- Application of Derivation	CBSE Class 12- Question paper of maths 2021 with solutions
Chapter 7- Integrals
Chapter 8-Application of Integrals

Class 12 Solutions of Maths Latest Sample Paper Published by CBSE for 2021-22 Term 2

Class 12 Maths Important Questions-Application of Integrals

Class 12 Maths Important questions on Chapter 7 Integral with Solutions for term 2 CBSE Board 2021-22

Solutions of Class 12 Maths Question Paper of Preboard -2 Exam Term-2 CBSE Board 2021-22

Solutions of class 12  maths question paper 2021 preboard exam CBSE