Explain the following processes:
(a) Polarisation of the membrane of a nerve fibre.
(b) Depolaristion of the membrance of a nerve fibre.
(c ) Conduction of nerver impulse along a nerve fibre.
(d) Transmission of a berve impulse across a chemical synapse.

Explain the following processes : Depolarisation of the membrane of a nerve fibre.

Explain the following processes : Transmission of a nerve impulse across a chemical synapse.

Explain the following processes : Conduction of a nerve impulse along a nerve fibre.

Transmission of nerve impulse, across the synapse is accomplished by

Unidirectional transmission of nerve impulse through nerve fibre is due to the fact that

A nerve impulse will travel through a nerve fibre only if its membrane suddenly becomes more permeable to ions of

Which of the following statements is correct regarding a myelinated nerve fibre? ,br> (i) It is always associated an axon. (ii) It allows rapid conduction of nerve impulses. (iii) It allows slow conduction of nerve impulses. (iv) It has nodes of Ranvier.

List the hormones secreted by the following : (a) Hypothalamus , (b) Pituitary , (c ) Throid, (d) Parathyroid (e ) Adrenal, (f) Pancreas, (g) Testis , (h) Ovary (i) Thymus, (j) Atrium , (k) Kidney, (I) G-I Tract (M) Transmission of a nerve impulse across a chemical synapse