In the following diagram showing axon terminal and synapse A, B, C, D and E respectively represents:

1. A-axon terminal, B-synaptic cleft, G-synaptic vesicles, D-neurotransmitters, E-receptors

2. A-axon terminal, B-synaptic vesicles, C-synaptic cleft, D-receptors, E-neurotransmitters

3. A-synaptic cleft, B-synaptic vesicles, C-axon terminal, D-neurotransmitters, E-receptors

4. A-synaptic cleft, B-axon terminal, C-synaptic vesicles, D-neurotransmitters, E-receptors

In the central nervous system, myelinated fibres form the............., while the non-myelinated fibre cells form the.................... .

1. Grey matter, white matter

2. White matter, grey matter

3. Ependymal cells, neurosecretory cells

4. Neurosecretory cells, ependymal cells

Which cranial nerve has the highest number of branches?

1. Facial nerve

2. Trigeminal

3. Vagus nerve

4. None of these

The junction between the axon of one neuron and the dendrite of the next is called:

1. junction point

2. a synapse

3. a joint

4. constant bridge

Vertebrate brain differentiates from:

1. endoderm

2. mesoderm

3. ectoderm

4. blastoderm

Which of the following statements is correct?

Assertion: Neural signals through the parasympathetic nerves can increase the cardiac output.

Reason: Parasympathetic neurons stimulation can increase the activities of SA node and strength
             of ventricular contraction.

Assertion: Ear is a stato Acoustic organ.

Reason: Ear is related to hearing & balance.

An action potential for a given axon is:
1. different in size each time it occurs
2. always the same size
3. larger when the information is to be carried faster
4. smaller when information goes to a gland rather than a muscle

Area of the brain, most involved in maintaining the body's homeostasis, is:
1. medulla oblongata
2. cerebellum
3. pons
4. hypothalamus