Human Anatomy and Physiology : Help with Brain Physiology

Study concepts, example questions & explanations for Human Anatomy and Physiology

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Example Questions

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Example Question #43 : Central Nervous System

What relationship does the basal nuclei have with movement?

Possible Answers:

Coordination and muscle memory

Initiation 

No relationship with movement

Regulation

Correct answer:

Regulation

Explanation:

The basal nuclei is located deep in the cerebral hemisphere and midbrain. It functions with the thalamus to regulate motor signals (regulation only, it does not initiate movement). The basal nuclei encourages wanted and appropriate movement signals and filters out unwanted signals. The caudate nucleus and putamen make up the striatum, and this along with globus pallidus make up the basal nuclei. 

Example Question #44 : Central Nervous System

Which of the following layers of the meninges is the innermost layer that lines the cerebral cortex?

Possible Answers:

Dura mater

Arachnoid mater

Pia mater

Subarachnoid mater

Correct answer:

Pia mater

Explanation:

The meninges are responsible for protecting the brain and spinal cord. The tough dura mater is the outermost layer of the meninges, while the pia mater is the delicate inner layer that lines the brain and spinal cord.

In order from the outermost to innermost layer, the meninges are: dura mater, arachnoid mater, subarachnoid space, and pia mater. The arachnoid mater and subarachnoid space create separation and cushioning between the dura mater and pia mater.

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