Question

1. Define synapse?,2. how are brain and spinal cord protected?, 3. Why is pancreas called a dual functional gland. write the names of its hormone?, 5. Difference between trophic and nastic movement?, 6. what is reflex action. explain with the help of examples?

Answer 1

Synapse is a small difference between nerve ending and dendrites of next neuron.

Answer 2

1. synapse is a small gap between two neutrons . at the time of axon , the electrical impulse sets the release of some chemical e.g. acetylcholine , which crosses the synapse gap and start a similar electrical impulse in dendrites.