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Interaction and the body, Tissues called tendons connect muscles to bones.…
Interaction and the body
reciving infornmation
Sight
have many parts :The cornea and the pupil.
The iris that is a muscle and controls how much light enter.
The lens that prollect an imagen in the retina and nerve receptors this send teh information to our brain
Hearing
Sound waves enter our ear through the auditory canal (outer ear) and make the eardrum vibrate.This vibration also causes the three small bones in our middle ear to vibrate.When these vibrations reach the cochlea in our inner ear, they are transformed into electrical signals.The auditory nerve sends these signals to our brain.
smell and taste
Our sense of smell detects chemicals in the air. When air enters our nose through our nostrils, these chemicals come into contact withnerve receptors. The nerve receptors send this information along the olfactory nerve to our brain.The receptor cells for taste are on the tongue inside each taste bud.
The receptors detect different tastes (bitter, sour, salty and sweet).
touch
The middle layer of skin, called the dermis, contains nerves and tiny blood vessels. These nerves detect sensations, such as temperature, pain and texture and send this information to our brain.
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giving a response
bones
Flat and thin bones, such as our ribs, protect our internal organs.
Long and strong bones, such as those in our arms and legs, are used for movoment
Short and wide bones, such as our vertebrae, provide support and stability.
joints
The vertebrae in our spine are joined by semi-flexible joints, which allow some movement.
Elbows, wrists, knees and ankles are flexible joints which allow a lot of movement. The shoulder is the most flexible joint in the human body.
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muscles
Muscles can be categorised as voluntary if we can move them at will, or involuntary when they move automatically. The muscles in our arms are voluntary while the muscles in our heart are involuntary.
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