Central Nervous System Quiz

What are the main components of the Central Nervous System?

• Brain and spinal cord

• Heart and lungs

• Kidneys and liver

• Muscles and bones

Answer explanation

The main components of the Central Nervous System are the brain and spinal cord, which are responsible for processing and transmitting information throughout the body.

Which of the following is NOT a region of the brain?

• Cerebrum

• Diencephalon

• Brain stem

• Spinal cord

Answer explanation

The spinal cord is NOT a region of the brain, it is part of the central nervous system but located outside the brain.

Which brain region includes the Thalamus and Hypothalamus?

• Cerebrum

• Diencephalon

• Brain stem

• Cerebellum

Answer explanation

The brain region that includes the Thalamus and Hypothalamus is the Diencephalon.

Which part of the brain is responsible for coordinating voluntary movements and balance?

• Cerebrum

• Diencephalon

• Brain stem

• Cerebellum

Answer explanation

The cerebellum is responsible for coordinating voluntary movements and balance in the brain.

What percentage of brain mass do the cerebral hemispheres account for?

• A) 75%

• B) 83%

• C) 90%

• D) 95%

Answer explanation

The correct answer is B) 83% because the cerebral hemispheres account for approximately 83% of brain mass.

What structure connects the cerebral hemispheres?

• A) Thalamus

• B) Hypothalamus

• C) Corpus callosum

• D) Medulla oblongata

Answer explanation

The structure that connects the cerebral hemispheres is the Corpus callosum, making option C the correct choice.

Which part of the brain is responsible for attention to sensory stimuli, long-term memory, emotional responses, and regulating overall activity level?

• A) Cerebral cortex

• B) Basal nuclei

• C) Thalamus

• D) Hippocampus

Answer explanation

The basal nuclei are responsible for attention to sensory stimuli, long-term memory, emotional responses, and regulating overall activity level.

What is the primary component of cerebral gray matter?

• A) Cerebral cortex

• B) White matter

• C) Corpus callosum

• D) Cerebellum

Answer explanation

The primary component of cerebral gray matter is the cerebral cortex, making option A the correct choice.

Which of the following is NOT a function of the basal nuclei?

• A) Attention to sensory stimuli

• B) Long-term memory

• C) Regulating overall activity level

• D) Controlling heart rate

Answer explanation

The correct choice is D) Controlling heart rate because the basal nuclei are not involved in regulating heart rate, which is primarily controlled by the autonomic nervous system.

Which of the following is NOT one of the three types of functional areas in the cerebral cortex?

• Motor areas

• Sensory areas

• Association areas

• Reflex areas

Answer explanation

Reflex areas is NOT one of the three types of functional areas in the cerebral cortex. The correct types are Motor areas, Sensory areas, and Association areas.