Scheme of work for autumn terme

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xi. Aqueous humour: it helps to keep the eye ball round and enable the eye to maintain it shape.
xii. The tear gland: it pours out tear over the front of the eye.

Care of the eyes

    1. Use good light when reading or doing any fine work.

    2. Do not rub the eye when you have something in it or with dirty hand.

    3. Do not wash your eyes with disinfectant.

    4. Do not move too close to a television screen while watching programm on the T.V.

    5. Eat food rich in vitamin A such as carrot, palm oil etc.

The nose
Structure of the nose
The nose is the organ for smell. the very top of the nose consist of bone. The rest is made of cartilage, small muscles and skin lined with a fine moist mucous membrane. The lining membrane contains small glands which produce watery secretion. The nose is divided into two nostrils by a partition called septum. The nerves of smell which run from the nose to the brain are called the olfactory nerves. There are tiny hairs at the entrance of the nose. They act as filters for the air that goes to the lung.
Functions of the nose

  1. It is the sense organ for smell.

  2. It acts as a passage or channel through which the air we breathe passes in and out of the lung.

  3. The air entering the lung is filtered and warmed by the tiny hairs

at the entrance of the nostrils.
Care of the nose

  • Avoid pushing object into the nose.

  • Avoid picking or poking the nose with finger nail or any object.

  • Blow the nose gently and avoid the habit of sniffing.

  • Avoid plucking the hair in the nose.

  • When it is necessary the nose should be cleaned with clean handkerchief or a clean piece of soft tissue paper.

  • See the doctor for the treatment of any nose infection.

The ear
The ear is an organ of hearing. It helps us to maintain balance.

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