Sensory, Motor, and Integrative Systems & Special Senses Quiz

Secondary neurons in the spinothalamic tracts synapse with tertiary neurons in the

• medulla oblongata.

• midbrain.

• thalamus.

• cerebellum.

If the spinothalamic tract on the right side of the spinal cord is severed,

• pain sensations below the damaged area on the right side are eliminated.

• pain sensations below the damaged area on the left side are eliminated.

• temperature sensations are unaffected.

• neither pain sensations nor temperature sensations are affected.

General sensory inputs (pain, pressure, temperature) to the cerebrum end in the

• precentral gyrus.

• postcentral gyrus.

• corpus callosum.

• central sulcus.

Neurons from which area of the body occupy the greatest area of the somatic sensory cortex?

• foot

• arm

• leg

• face

• torso

Which of these areas of the cerebral cortex is involved in providing the motivation and foresight to plan and initiate movements?

• primary motor cortex

• basal nuclei

• premotor area

• prefrontal area

Which of these pathways is not an ascending (sensory) pathway?

• spinothalamic tract

• corticospinal tract

• dorsal-column/medial-lemniscal system

• spinocerebellar tract

Most fibers of the corticospinal tract

• decussate in the medulla oblongata.

• synapse in the pons.

• descend in the rubrospinal tract.

• begin in the cerebellum.

A person with a spinal cord injury is suffering from paresis (partial paralysis) in the right lower limb. Which of these pathways is probably involved?

• left lateral corticospinal tract

• right lateral corticospinal tract

• left dorsal-column/medial-lemniscal system

• right dorsal-column/medial-lemniscal system

The major effect of the basal nuclei is

• to act as a comparator for motor coordination.

• to decrease muscle tone and inhibit unwanted muscular activity.

• to affect emotions and emotional responses to odors.

• to modulate pain sensations.

Given these areas of the cerebral cortex: (1) Broca area (2) premotor area (3) primary motor cortex (4) Wernicke area If a person hears and understands a word and then says the word out loud, in what order are the areas used?

• 1,4,2,3

• 1,4,3,2

• 3,1,4,2

• 4,1,2,3

• 4,1,3,2