Question

Rearrange the following in correct sequence pertaining to what is given within brackets at the end. 

(a) Effector …….. sensory neuron ………. Receptor…….. motor neuron………. Stimulus……. central nervous system………. Response (Reflex arc) 

(b) repolarization……. Depolarization…….. Resting….. (polarised) (during conduction of nerve impulse through a nerve fibre) 

(c) axon endings ……… nucleus …….. Dendrites ……… axon…….. perikaryon ………. Dendron……. (Neutron structure) 

(d) diencephalon ………. Cerebellum …….. medulla oblongata ………. Pons ….. Cerebrum ……. mid-brain (sequence of parts of human brain).

Answer 1

(a) Stimulus --- receptor --- sensory neuron --- central nervous system --- motor neuron --- effector --- response 

(b) Resting --- depolarization --- repolarization

(c) Dendrites --- Dendron --- perikaryon --- nucleus --- axon --- axon endings 

(d) Cerebrum --- diencephalon --- mid-brain --- cerebellum --- pons --- medulla oblongata