S 1 - Schwann cell are present in unmyelinated nerve fibre .

S 2 - Unmyelinated nerve fibre is commonly found in autonomous and the somatic neural systems.

A ) At Resting state , the axonal membrane is comparatively more permeable to sodium ions (Na+ ) and nearly impermeable to potassium ions (K+ )

B) Sodium-potassium pump transports 3 Na+ outwards for 2 K+ into the cell.

Which one of the following statements is not correct?

(a) ............................. helps in equalising the pressures on either sides of the ear drum.

(b) The anterior portion of outer layer of eye is called ............................

(c) The dorsal portion of the midbrain consists mainly of four round swellings called ......................................

A. The membranous labyrinth is filled with a fluid called perilymph.

B. Three semicircular canals are at right angle to each other.

C. Only Cochlea is concerned with Hearing.

D. Vestibular apparatus is located below the cochlea.

Q. Suppose you are standing inside a human eye ball. What is the correct order of cells from inside to outside ?

S 1 - The inner parts of cerebral hemispheres and amygdala, hippocampus form a complex structure called limbic system.

S 2 - The cerebral hemispheres are connected by a tract of nerve fibres.

S 1 - Hypothalamus lies at the base of the thalamus.

S 2 - The cerebral cortex is referred to as the white matter due to its whitish appearance.

Transmission of an impulse across .............................. is very similar to impulse conduction along a single axon.

Inside the skull, the brain is covered by cranial meninges. The correct order of layer from inside to outside -

1 - Cerebellum has very convoluted surface.

2 - Pons contains centres which control respiration, cardiovascular reflexes and gastric secretions.

3 - Brain stem is formed by midbrain and pons, cerebellum.

1. Tympanic membrane consist of connective tissue covered with mucus membrane on outside and skin on outside.

2. Stapes is attached to the round window of the cochlea.

When you enter a dark room with no light .Which photoreceptor cells gets activated ?

1. In ear Nerve impulses are generated and transmitted by the afferent fibres to the auditory cortex of the brain.

2. The forebrain consists of cerebrum, thalamus and hypothalamus.