Where is the anterior (ventral) root of a spinal nerve?

C

Which of the following statements is incorrect ?

The anterior gray horn, posterior gray horn and lateral gray horns contain myelinated fibers.

The anterior and posterior gray horns divide the white matter into columns.

The white matter of the spinal cord contains tracts.

Sensory tracts carry information to the brain.

Motor tracts carry information away from the brain.

The anterior gray horn, posterior gray horn and lateral gray horns contain myelinated fibers.

Which of the following brain structures consists of the medulla oblongata, pons and midbrain?

Diencephalon

Dura mater

Brain stem

Cerebrum

Cerebellum

Brain stem

The term 'decussation' means:

to split in half

control of movement

a form of sensory input

crossing

swallowing

crossing

If a person has damage to the visual association area, he/she will

not be able to see

see, but be unable to understand what he/she is viewing

not be able to remember visual experiences from the past, like the color of his/her first car

see, but be unable to understand what he/she is viewing

Diffusion, enzymatic degradation, and uptake by cells are all ways to

excite a presynaptic potential

remove a neurotransmitter

stop a spatial summation

continue a temporal summation

inhibit a presynaptic potential

remove a neurotransmitter

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EPSPs are caused by a hyperpolarization of the post-synaptic membrane.

True

False

False

The process in which the frequency of nerve impulses in the first-order neuron decreases during prolonged stimulus is called

modality.

adaptation.

perception.

selectivity.

transduction.

adaptation

The postcentral gyri of the parietal lobes of the cerebral cortex

provide the ability to move the eyeballs.

receive visual information.

control voluntary body movements.

receive body sensory information.

are considered the primary gustatory area.

receive body sensory information.

The process of sensation begins in a _____, which can be either a primary sensory neuron or a separate cell.

effector cell.

signal transducer cell.

association neuron.

sensory receptor cell.

secondary sensory neuron.

sensory receptor cell.

Third order neurons conduct impulses from the thalamus to the somatosensory area of the cerebrum or to the cerebellum.

True

False

True

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Vibration and fine touch sensory impulses are carried by the anterolateral spinothalamic pathway.

True

False

False

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Unconscious proprioception sensory impulses are carried by the

Posterior column-medial lemniscus pathway

Anterolateral spinothalamic pathway

Spinocerebellar pathway

All of these

Spinocerebellar pathway