Integrating Pathways-Nervous Coordination

Write the conclusion drawn by Galen (a Greek physiologist).

Draw a neatly labelled diagram of Brain. Name the structures involved in the protection of the brain?

Draw a picture representing the connection between dendrite-dendrite, axon-dendrite. Why do they connect like that?

State whether the following action is a voluntary action, reflex action or conditioned reflex.

We close our ears when we hear an unbearable sound.

State whether the "Salivating when food is put in the mouth" action is a voluntary action, reflex action or conditioned reflex.

State whether the "Playing on the keyboard" action is a voluntary action, reflex action or conditioned reflex.

State whether the "Cleaning the table" action is a voluntary action, reflex action or conditioned reflex.

State whether the blinking action is a voluntary action, reflex action or conditioned reflex.

Organs respond to the external stimulus by a fraction of a second. How do you feel about such a controlling mechanism of the human body?

Distinguish between receptor and effector.

Distinguish between afferent and efferent nerves.

What is a synapse? How is it useful in the transfer of information?

Consider that you are passing by a garbage disposal area and you immediately cover your nose. Arrange the events below in a logical order by marking them from 1 to 5 to trace the events that happen in the nervous system from the detection of foul smell (stimulus generation) to covering your nose (response).
(i) At the end of the axon, electrical impulse releases chemicals.
(ii) Stimulus received by the dendrites of a neuron sets off a chemical reaction that creates an electrical impulse.
(iii) Electrical impulse transmitted through cell body and axon.
(iv) The chemicals cross the synapse and reach the next neuron. Similarly, the electrical impulse crosses several neurons.
(v) Finally, the impulse is delivered from neuron to the gland that helps in recognition of the foul smell and muscle cells that help in covering the nose.

Fill in the missing sections in the following flow chart.