Write one function each of the following five parts of eyeball of human eye: (a) Cornea, (b) Lens, (c) Retina, (d) Choroid, (e) Iris.

What is the function of Schwann cell?

Mention one role each of hypothalamus and medulla oblongata in the 24 hours daily life of a person

Write the names of two structural parts of axon.

Blind spot is the part of the eye devoid of light sensitive cells formed at the junction of optic nerve and retina.

Accommodation is the ability of the retina of the eye to adjust the focal length as needed.

Write two differences between axon and dendron.

Draw a scientific diagram of the vertical section of a human eyeball and label the following parts: [3+2=5] (a) Choroid (b) Lens (c) Cornea (d) Vitreous humour OR Draw a scientific diagram of the anaphase stage of mitotic cell division in an animal cell and label the following parts- [3+2=5] (a) Centromere (b) Daughter chromosome (c) Polar region (d) Spindle fibre

Cornea, Choroid, Lens, Aqueous humour, Iris, Vitreous humour — how many of these are refractory media of the eyeball? (a) 3 (b) 4 (c) 5 (d) 6

Which of the following is not a structural feature of an Axon? (a) Node of Ranvier (b) Myelin sheath (c) Nissl granule (d) Schwann cell

Name any two structural parts of Neurone

Explain the causes of Myopia and Hyperopia