Kategoriak: All - circulatory - nervous - digestive - connective

arabera Attia Yasmin 9 years ago

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organ system

The human body comprises several interconnected organ systems, each fulfilling essential functions for survival and health. The musculoskeletal system provides structural support and facilitates movement through bones, muscles, and ligaments.

organ system

organ system

Musculoskeletal system

Bones
The internal structure or frame of the body
Muscles
Consists of bundles of long cells called muscle fibres that contain specialized proteins
Ligaments
They are tough, elastic connective tissues that holds bones together at the joints

Circulatory system

Blood vessels
Capilleries

Tiny blood vessels with very thin walls that enables the exchange of gasses, and nutrients

Arteries

It carries blood to your heart

Veins

It carries blood towards your heart

It transports blood to all body parts
Blood
Carries oxygen, and nutrients to all boy parts through blood vessels
Heart
It pumps the blood to all body parts in a constant, and regular beat.

Nervous system

Ganglia
A structure containing a number of nerve cell bodies
Nerves
Fibers of sensory and motor neutrons
Spinal cord
A bundle of nerve fibres and associated tissue that is in close in the spine
Brain
The coordination centre of the sensation, intellectual and nervous activity

Digestive system

Stomach
Its main function is to hold food and the process of digestion, nerves in the stomach signal when we have had enough food
Intestine
It has cells that produces mucus, it contains smooth muscle that contracts and relaxes
Esophagus
It is a muscular tube that contracts and relaxes to allow the food to slide onto the stomach
Mouth
Processes food and breaks it down in two ways chemically: by secreting enzymes ( saliva), and mechanically: using teeth and tongue.

Respiratory system

Diaphragm
Muscle responsible for the contraction of the lungs to allow the air in and out
Alveoli
Allows exchanging of gaseous
Nose/Mouth
Air is inhaled through it
Trachea
Air passes through the two parts of the lungs
Bronchi
The trachea branches off into the bronchi, which delivers the air to the lungs
Lungs
Provides oxygen for the capillaries and exhales CO2

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