Question

1.
Give two examples of the following.
1. Girdles
2. Ball and socket joints
3. Hinge joints
4. Parts of the eye
5. Parts of the ear
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Answer 1

Answer:

1. Girdles  = shoulder girdle and hip girdle

2. Ball and socket joints  = Shoulder joint,Hip joint

3. Hinge joints  = ankles, elbows

4. Parts of the eye = a) The sclera, or white part of the eye, protects the eyeball.

b) The pupil, or black dot at the centre of the eye, is an opening through which light can enter the eye.

c) The iris, or coloured part of the eye, surrounds the pupil.

5.  Parts of the ear =  a) External or outer ear, consisting of: Pinna or auricle. This is the outside part of the ear. ...

b) Tympanic membrane (eardrum). The tympanic membrane divides the external ear from the middle ear.

c) Middle ear (tympanic cavity), consisting of: Ossicles. ...

d) Inner ear, consisting of: Cochlea.

Explanation:

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