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20 October 2019

Human Body Basics |Components of Human Body

Biology , Human Body
Human Body Basics |Components of Human Body


Human Body Basics -Components of Human Body

Elements of Human Body

Clinical Composition of Human Body


More than 93 per cent of the human body consists of three chemical elements-oxygen (65%), carbon (18.5%), and hydrogen (10%). 
Nitrogen (3%), calcium (1.5%), and phosphorus(1%) are also present in significant amounts.
At least 54 chemical elements feature in total, but most of these are tiny traces.

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Tissues and Types of Tissues in Human Body

Biology , Human Body
Tissues and Types of Tissues in Human Body

Tissues and Types of Tissues in Human Body


Tissues


Tissues are groups of connected cells. 
Many tissues are made entirely from one type of cell. 
The four main types of tissue in the human body are;
  1. Connective tissue
  2. Epithelial tissue
  3. Muscular tissue
  4. Nervous tissue

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What Makes a Body?Making a Human

Biology , Human Body
What Makes a Body?Making a Human

What Makes a Body?Making a Human

What Makes a Body?

The human body is made from the same components as every other living thing. It is the way that they are put together that makes our bodies uniquely human. 

The basic materials are simple chemicals such as water, carbon, and oxygen, but they join to create more complex compounds. Trillions of microscopic cells become the building blocks of life, grouping together to form skin, bones, blood, and organs, until the body becomes complete.

 

Making a Human

Everything in the body  is made up of atoms, the tiniest building blocks of matter. 
  Atoms combine to  form molecules. 
 Millions  of molecules form every cell in the body. 
 There are  more than 200 types of cell,
with similar cells working in teams called tissues.
 The body's many organs and  systems are made up of-
 different tissues.

 Atoms =>Molecules =>Cell=>Tissue=>Organ=>Body System

Atoms and molecules

The smallest parts in the body are atoms.
These tiny building blocks form the elements in the body, such as carbon. 
Atoms can also  join together in groups called molecules - 
for  example, water is a molecule, made from a  combination of hydrogen and oxygen atoms.

Cell

 

Molecules build up to create body cells.
There are about 37 trillion cells in the average human, with different types of cells carrying out a variety of body functions, from transporting oxygen to sensing light and colour in the eye.

Tissue

Cells performing the same  function are grouped together to form body tissues, such as skin, fat, or heart muscle. 

Blood is also a tissue, in liquid form.

Organs:


Different kinds of tissue combine to make larger structures called organs.
Each organ works like a machine,performing its own role. 
An example of an organ is the stomach, which plays a part in the process of digesting food.

Body system


Organs are at the centre of 12 internal body systems. 
Each system has a specific job to keep the body in working order.

The stomach is one of the main organs of the digestive system.

Complete human

When this complex combination of integrated systems, organs, and tissues work together, the human body is complete. 

Each individual component plays its part in maintaining a fully functioning body.

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1 October 2019

Solar System: Sun and the Eight Planets

Asteroids , Astronomy
Solar System: Sun and the Eight Planets

Solar System: Sun and the Eight Planets


Solar System


The sun, eight planets, satellites and some other celestial bodies known as asteroids and meteoroids  form the solar system.

 We often call it a solar family, with the sun as its Head.

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11 September 2019

Celestial Bodies, Stars,Constellation,Planets-Astronomy Notes

Astronomy ,
Celestial Bodies, Stars,Constellation,Planets-Astronomy Notes

Celestial Bodies, Stars,Constellation,Solar System-Astronomy Notes

What are Celestial Bodies?

The sun, the moon and all those objects shining in the night sky are called celestial bodies.

 Stars

Some celestial bodies are very big and hot. They are made up of gases. They have their own heat and light, which they emit in large amounts. These celestial bodies are called stars

 eg:- Sun

What is called a Constellation?

Constellations are the various patterns formed by different groups of stars. 

eg:- Ursa Major or Big Bear 

Saptarishi:
 One of the most easily recognisable constellation is the Saptarishi (Sapta-seven, rishi-sages). It is a group of seven stars that forms a part of Ursa Major Constellation. 

Pole Star/North Star

In ancient times, people used to determine directions during the night with the help of stars. 

The North star indicates the north direction. It is also called the Pole Star. 

It always remains in the same position in the sky. 

We can locate the position of the Pole Star with the help of the Saptarishi.

 

Planets

Planets are the celestial bodies do not have their own heat and light. 

They are lit by the light of the stars. 

  The word ‘planet’ comes from the Greek word “Planetai” which means ‘wanderers’.


for example, the earth on which we live is a planet. It gets all its heat and light from the sun, which is our nearest star.


If we look at the earth from a great distance,  it will appear to be shining just as the moon.

 

Satellite

The celestial bodies that moves around the planets.

The moon that we see in the sky is a satellite. It is acompanion of our earth and moves round it. 

 

Read Solar System in Next Post

 

 

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