Nervous system

Front

Stimulus

Back

A change in the environment.

Front

Impulses are conveyed from the central nervous system to the muscles by a/an

Back

efferent neurone.

Front

Pick out the WRONG statement concerning the function of the nerve cell. Options: It can convey impulses in both directions, It does not weaken the impulse passing through it, It conveys messages in the form of electrical impulses, It conveys impulses to the effector organs.

Back

It can convey impulses in both directions.

Front

Which one of the following neurones conveys impulses from the afferent neuron to the efferent neuron?

Axon.

,

Dendron.

,

Synapse.

,

Interneuron.

Back

Interneuron.

Front

The part of the brain labelled Z controls the center which serves all of the following except: Cardiac inhibition, Respiratory center, Vaso contraction center.

Back

Visual interpretation center.

Front

The structure above is a type of neurone. Name the neurone.

Back

Efferent neurone.

Front

The figure above shows a cross section of a mammalian spinal cord. The part which contains neurons that transmit impulses from the brain to the effector is

I only

,

II only

,

III only

,

IV only

Back

IV only.

Front

What is P in the synaptic knob and its function?

Back

Mitochondrion: Generates energy to send impulse across the synapse.

Front

Nerve impulses travel from: I V to Z, II Z to X, III X to V, IV Y to W.

Back

I and II only.

Front

Effectors which are beyond voluntary control include: I. Triceps muscles, II. Iris muscles, III. Salivary glands, IV. Ileum muscles.

Back

II, III and IV only.