Different Systems of Human Body
A number of organs in the body that functions in a coordinated manner form a system.
For example, the heart, arteries, capillaries and veins constitute the circulatory system.
The human body is functioning properly due to the coordinated action of various systems given below: 1.
Skeletal system 2.
Circulatory system 3.
Respiratory system 4.
Digestive system Skeletal System: The main purpose of the skeletal system is to provide mechanical stability for the body, to protect the delicate organs and to serve as an anchorage for the muscles in order to make possible through liver action.
The skeleton also serves as a reservoir for calcium and phosphorous and contains the bone marrow in which blood cells are formed.
The skeleton consists of 206 bones.
The skeletal bones are completely enclosed by a membrane called periosteum, from which a new bone is formed in the healing of fractures.
Circulatory System: The circulatory system is a type of transport system.
The circulatory system helps in supplying the oxygen and digested food to different parts of our body and removing Carbon-Di-Oxide from the blood.
The heart is the centre of the circulatory system.
The heart is made up of muscles.
It acts as a pump.
The heart pumps blood by a movement called heart-beating.
The heart pumps the blood through the pulmonary circulation to the lungs and through the systematic circulation to other organs of the body.
Respiratory System: The respiratory system is concerned with breathing and respiration.
It main organs are the lungs.
The respiratory system starts from the nose and end of the lungs.
We breathe through our nose.
The nose has a cavity which leads to the wind-pipe.
This is known as the nasal cavity.
The nasal cavity contains some hair at the opening.
These hairs filter dirt particles as the air passes through the nose.
The nasal cavity is also wet at the back.
So when we breath through the nose we inhale air that is free from dirt.
'Breathing in' is called as inspiration and 'breathing out' is called as expiration.
Digestive System: The digestive system is responsible for digesting the food one eats.
In the digestive system the food is disintegrated chemically so that it can be absorbed.
The digestive system is in the form of a long tube consists of the mouth at its upper end and the anus at its lower orifice and the food is advanced by peristaltic movements produced by automatic rhythmic contractions of the smooth muscles present throughout the wall of the digestive tract.
For example, the heart, arteries, capillaries and veins constitute the circulatory system.
The human body is functioning properly due to the coordinated action of various systems given below: 1.
Skeletal system 2.
Circulatory system 3.
Respiratory system 4.
Digestive system Skeletal System: The main purpose of the skeletal system is to provide mechanical stability for the body, to protect the delicate organs and to serve as an anchorage for the muscles in order to make possible through liver action.
The skeleton also serves as a reservoir for calcium and phosphorous and contains the bone marrow in which blood cells are formed.
The skeleton consists of 206 bones.
The skeletal bones are completely enclosed by a membrane called periosteum, from which a new bone is formed in the healing of fractures.
Circulatory System: The circulatory system is a type of transport system.
The circulatory system helps in supplying the oxygen and digested food to different parts of our body and removing Carbon-Di-Oxide from the blood.
The heart is the centre of the circulatory system.
The heart is made up of muscles.
It acts as a pump.
The heart pumps blood by a movement called heart-beating.
The heart pumps the blood through the pulmonary circulation to the lungs and through the systematic circulation to other organs of the body.
Respiratory System: The respiratory system is concerned with breathing and respiration.
It main organs are the lungs.
The respiratory system starts from the nose and end of the lungs.
We breathe through our nose.
The nose has a cavity which leads to the wind-pipe.
This is known as the nasal cavity.
The nasal cavity contains some hair at the opening.
These hairs filter dirt particles as the air passes through the nose.
The nasal cavity is also wet at the back.
So when we breath through the nose we inhale air that is free from dirt.
'Breathing in' is called as inspiration and 'breathing out' is called as expiration.
Digestive System: The digestive system is responsible for digesting the food one eats.
In the digestive system the food is disintegrated chemically so that it can be absorbed.
The digestive system is in the form of a long tube consists of the mouth at its upper end and the anus at its lower orifice and the food is advanced by peristaltic movements produced by automatic rhythmic contractions of the smooth muscles present throughout the wall of the digestive tract.
