Introduction to CNS Quiz

The primary somatosensory cortex

• is in the postcentral gyrus.

• receives third order neurons from thalamus.

• send efferent fibers to the cerebellum.

• damage on the left causes left hemiparaesthesia.

• receives input from general interpretative area (GIA) for stereognosis.

Regarding cerebral cortex:

• Neuronal connections change with the past experience.

• Language and non-language skill areas are represented in different hemispheres

• Frontal lobes involved in emotional behaviour.

• Cortical area devoted to sensation in the hand is larger than that for the trunk.

• Stimulation of the motor cortex causes muscle contractions on the same side of the body.

Organize these options into the right categories

Groups:

(a) CNS

,

(b) Afferent divison of PNS

,

(c) Efferent division of PNS

,

(d) Receptors

• Spinal cord

• Somatic motor neurons

• Sensory neurons
• Cerebral cortex

• Parasympathetic nervous system

• Respiratory centre

• Vomiting centre

• Retinal ganglion cells
• Proprioceptors
• Sympathetic nervous system

• Pontine micturition centre

Label the elements involved in the reflex arc.

a

b

c

d

e

Receptor

Motor Neuron

Effector

Interneuron

Sensory Neuron

Select the areas responsible for motor functions.

Select the areas responsible for somatosensory functions.

Select the areas that involve in special senses.