The structure of the human body

What is the structure of the living organism’s body ?

Human systems

The systems of the human body

The body of the living organism consists of a group of systems , Each system consists of a group of organs , Each organ consists of a group of tissues , Each tissue consists of a group of similar cells , The cell is the smallest building unit of the body of the living organism which is made up of a group of systems .

The human systems

The human body is composed of a group of systems .

The structure of the human body

The human body is composed of a group of systems which are the digestive system , the respiratory system , the urinary system , the circulatory system , the nervous system and the reproductive system .

The digestive system digests and absorbs the food , while the respiratory system carries out the respiration process , There is the urinary system in the human body which helps the body to get rid of the harmful substances .

The circulatory system carries out the transport function in the human body , where it distributes the digested food and oxygen gas all over the body cells and carries the wastes away from the body .

The nervous system gives us the ability to feel , see , hear , smell and taste , while the reproductive system produces new individuals who look like us , the living organisms are classified into the animals ( including the humans ) and the plants .

All living organisms have common properties as the nutrition , the motion , the respiration , the excretion , the sensation and the reproduction .

Role of the respiratory system in the excretion process in man & Respiration in plant

Important excretory organs in man’s body & Structure of urinary system

Small intestine , Absorption of digested food , Metabolism , Large intestine and defecation

Lymphatic system , Blood circulation ( Pulmonary circulation , Systemic circulation & Hepatic portal circulation )

Nervous system in man , Nerve cells types & Nature of nerve impulse

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