Question

1) Chemical transmission of nerve impulses from
one neuron to another, or from a neuron to a
muscle is carried out by
(a) cholecystokinin (b) acetylcholine
(c) cholesterol (d) all of these

2) Mammalian brain differs from an amphibian
brain in possessing
(a) cerebellum
(b) corpus callosum
(c) olfactory lobes (d) hypothalamus​

Answer 1

1) Chemical transmission of nerve impulses from

one neuron to another, or from a neuron to a muscle is carried out by (b) acetylcholine.

2) Mammalian brain differs from an amphibian

brain in possessing (b) corpus callosum.

*corpus callosum is a mammalian character.