General Map of the Nervous System

Question 1

The central nervous system is comprised of what elements of the body?

Answer 1

• Brain
• Spinal Cord
• Optic Nerve (CN 2)

Question 2

The peripheral nervous system is comprised of what elements of the body?

Answer 2

• 11 Cranial Nerves (not including CN 2)
• Spinal Nerves
• Sympathetic Ganglia
• Enteric Plexus

Question 3

What is the difference in afferent and effect neurons?

Answer 3

• Afferent neurons bring signals IN
• Efferent neurons bring signals OUT (E = Exit)

Question 4

When does the neural tube form and at what end does it initially form at?

Answer 4

• Forms at 21 days
• Forms in the cervical region initially’

Question 5

What is the prosencephalon?

Answer 5

The forebrain

Question 6

As the brain develops what is the prosencephalon broken up into?

Answer 6

• Telencephalon
• Diencephalon (CN 2 and optic disc form here)

Question 7

What is the mesencephalon?

Answer 7

Midbrain

Question 8

What is the rhombencephalon?

Answer 8

Hindbrain?

Question 9

As the brain develops what is the rhombencephalon broken up into?

Answer 9

• Metencephalon (pons and cerebellum)
• Myelencephalon (medulla oblongata)

Question 10

What are the 3 brain divisions and their components?

Answer 10

• Forebrain (Prosencephalon): Telencephalon and Diencephalon (CN 2 and optic disc form here)
• Midbrain (Mesencephalon)
• Hindbrain (Rhombencephalon): Metencephalon (pons and cerebellum) and Myelencephalon (medulla oblongata)

Question 11

What does the transverse fissure separate?

Answer 11

The cerebellum and the occipital lobe

Question 11

What does the longitudinal fissure separate?

Answer 11

The left and right brain

Question 12

What does the lateral sulcus or fissure separate?

Answer 12

The temporal and frontal lobe

Question 13

What are the terms used when discussing the orientation of the CNS?

Answer 13

• Dorsal (Superior)
• Ventral (Inferior)
• Rostral (Anterior)
• Caudal (Posterior)

Question 14

What is the biggest difference between an MRI and a CT?

Answer 14

• On an MRI the fine soft tissue structures are visible and the grey and white matter can be differentiated
• On and CT the bones are white and the fine structures are not visible clearly

Question 15

Is the frontal lobe in the rostral or caudal telencephalon?

Answer 15

Rostral

Question 16

What is the central nervous systems primary function?

Answer 16

Control of motor, sensory and integrative functions

Question 17

What is the peripheral nervous systems primary function?

Answer 17

Control of functional components

Question 18

What is the difference between somatic and visceral nervous systems?

Answer 18

• Somatic is voluntary nervous systems
• Visceral is an autonomic nervous system