Question

(a) Name the following:
(i) The part of the eye responsible for
change in the size of the pupil.
(ii) The audio receptors in human
ears.
(iii) The basic unit of the brain.
(iv) The gland which produces tears.
(v) The junction between two nerve
cells.​

Answer 1

Answer:

1. Iris

2. The cochlea contains the spiral organ of corti,which is the receptor organ for hearing.

3. neuron

4. For this question see answer at explanation.

Explanation:

4. Synapse,also called neuronal junction, the site of transmission of electric nerve impulses between two nerve cells( neurons ) or between a neuron and a gland or muscle cell( effector ) . A synaptic connection between a neuron and a muscle cell is called a neuromuscular junction...