Question

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Define Human Body?​

Answer 1

Answer: The human body is the structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organ systems.

Answer 2

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• Define Human Body.

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Human body is the physical substance of the human organism, composed of living cells and extracellular materials and organized into tissues, organs, and systems. human body; human anatomy.

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Information about human body:

• If we were to “break apart” the human body at the microscopic level, then the cell would constitute the most basic unit of life.
• The average adult has somewhere between 30 – 40 trillion cells, and an estimated 242 billion new cells are produced every day. When a select group of cells with similar functions come together, it forms a tissue.

• Tissues cumulate into organs, organ systems and eventually, an individual organism.

Cells -> Tissues -> Organs -> Organ System -> Organism

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Human Anatomy:

Skeleton

• The human body exhibits a variety of movements from walking, bending and crawling to running, jumping and climbing.
• The framework that enables us to do all these activities is the skeleton.
• Humans have as much as 300 bones at birth.
• However, the bones start to fuse with age.
• At adulthood, the total number of bones is reduced to 206.
• The skeleton also protects several vital organs such as the heart, lungs and the liver.
• Bones are attached to other bones through ligaments, a fibrous connective tissue.
• Joints are points at which two bones meet.

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Muscles:

• Muscles are specialised tissues which assist the bones in locomotion.
• Muscles are attached to the bones through tendons.
• Movement of limbs happens due to the contraction and relaxation of the corresponding muscles present in that region.
• Joints help in the flexibility of bones, but a bone cannot be bent or stretched until a muscle acts on it.
• In other words, the muscles attached to that bone pulls it to the direction of movement.

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List of Human Body parts:

• Human body parts comprise a head, neck and four limbs that are connected to a torso.
• Giving the body its shape is the skeleton, which is composed of cartilage and bone.
• Human body internal parts such as the lungs, heart, and brain, are enclosed within the skeletal system and are housed within the different internal body cavities.
• The spinal cord connects the brain with the rest of the body.

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Human Body Structure:

There are different cavities in the human body that house various organ systems.

• The cranial cavity is the space within the skull, it protects the brain and other parts of the central nervous system.
• The lungs are protected in the pleural cavity.
• The abdominal cavity houses the intestines, liver and spleen.

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Circulatory System:

• The circulatory system is also referred to as the cardiovascular system.
• It comprises the heart and all the blood vessels: arteries, capillaries, and veins.

There are essentially two components of circulation, namely:

• Systemic circulation
• Systemic circulationPulmonary circulation
• Besides these two, there is a third type of circulation called Coronary circulation.

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Digestive system:

• The digestive system breaks down food and assimilates nutrients into the body, which the body then uses for growth and cell repair.
• The process of digestion starts with mastication (chewing food).

The major components of the digestive system are:

• Mouth
• Teeth
• Tongue
• Oesophagus
• Stomach
• Liver
• Pancreas
• Gastrointestinal tract
• Small and large intestines
• Rectum

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Reproductive System:

• The human reproductive system is also known as the genital system that comprises internal and external organs that help in reproduction.
• It varies for both males and females.

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Respiratory System:

• The respiratory process involves the intake of oxygen, and the exhale of carbon dioxide from the body.
• This system is also known as the ventilatory system, gas exchange system or respiratory apparatus. Vertebrates like human beings possess lungs for respiration.
• The process of respiration starts with the cycle of inhalation and exhalation.
• Inhalation results in the oxygen entering into the body and exhalation results in carbon dioxide exiting from the body.

Anatomically, the respiratory system comprises the following organs:

• Trachea
• Bronchi
• Bronchioles
• Lungs
• Diaphragm

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Nervous System:

• The voluntary and involuntary actions are maintained and taken care of by the central nervous system.
• It helps to channel the signals to and from different parts of our body.
• The central nervous system contains the brain and the spinal cord, while the peripheral nervous system includes nerves and ganglia that are present outside the brain and spinal cord.
• Through the axons, every part of the body gets connected.

Nervous System is broadly classified into two categories:

• Central Nervous System
• Peripheral Nervous System

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