Distinguish between :
(a) afferent neurons and efferent neurons
(b) impulse conduction in an myelinated nerve fibre and unmyelinated nerve fibre
(c ) aqueous humour and vitreous humor
(d) blind spot and yellow spot
(f) cranial nerves and spinal nerves .

How do you call the conduction of impulse along a myelinated nerve fibre?

Distinguish between: (i) Single-unit smooth muscle and multi-unit smooth muscle. (ii) Myelinated and non-myelinated nerve fibres.

The junction between the axon of one neuron and the dendrite of the next is called Junction of two nerve fibres is called

If myelin sheath is continuous in myelinated nerve fibre than what will happens in neuronal conduction?

Assertion:Myelinated nerve fibres are present in spinal and cranial nerves. Reason:Myelinated nerves conduct impulses more radidly than unmyelinated nerves.

Read the given statements and select the correct option. (i)Synaptic cleft of neurons secreates adrenaline. (ii)Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon. (iii)Non-myelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath. (iv)Spinal and cranial nerves are made of non-myelinated nerve fibres.

Label the following parts in the diagram of eye : (a) Aqueous chamber (b) Cornea (c) Lens (d) Retina (e) Vitreous chamber (f) Blind spot

A neuron is a microscopic structure composed of three major parts, namely, cell body, dendrites and axon. There are two types of axons, namely, myelinated, and nonmyelinated. Which of the following is true for nerve ? i. The myelinated nerve fibres are enveloped with Schwann cells ii. Schwann cells form a myelin sheath around the axom iii. The gaps between two adjacent myelin sheaths are called nodes of Ranvier. iv.Myelinated nerve fibres are found in autonomous and the somatic neural systems v. Unmyelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath around the axon. vi. Unmyelinated nerve fibre is commonly found in spinal and cranial nerves

Which of the following statemetn are correct and incorret 1. Synaptic cleft of neurons secrate adrenaline 2. Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon 3. Non- myrlineated nerve fibre is emclosed by a schwann cell that from a myelin sheath. 4. Spinal cord and cranial nerve are made of non-myelinated nerve fibres of the four statemets