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.

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

Choose the odd one and write it: Olfactory nerve, Vagus nerve, Optic nerve, Auditory nerve

The focal length of lens increases in case of seeing distant objects.

Reflex action is fast, spontaneous and ____.

Decide which of the following sequence is correct — (a) Receptor → Effector → Sensory Nerve → Motor Nerve → Nerve Centre (b) Receptor → Nerve Centre → Motor Nerve → Sensory Nerve → Effector (c) Receptor → Sensory Nerve → Nerve Centre → Motor Nerve → Effector (d) Receptor → Motor Nerve → Effector → Sensory Nerve → Nerve Centre

Match the words of Column-A with that of Column-B and select which of the following options is correct Column-A Column-B A. CSF i. Protects Central Nervous System from mechanical injury B. Meninges ii. Helps in the formation of the myelin sheath C. Neuroglia iii. Acts as a shock absorber (a) A-(ii) B-(iii) C-(i) (b) A-(iii) B-(i) C-(ii) (c) A-(i) B-(ii) C-(iii) (d) A-(i) B-(iii) C-(ii)

Select the correct pair — (a) Sclera—Absorbs excess light within the eyeball (b) Choroid—Provides definite shape of the eyeball (c) Lens—Causes refraction of light and accomplishes accommodation (d) Retina—Holds the lens with the help of the suspensory ligaments

Which of the following are the refractive media of the eye? (a) Cornea, aqueous humour, lens, vitreous humour (b) Retina, aqueous humour, lens, vitreous humour (c) Cornea, retina, lens, iris (d) Aqueous humour, iris, vitreous humour, cornea

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

In human body in all _____ pairs of cranial nerves and spinal nerves are present