Brain & Cranial Nerves

Question 1

Nervous System

Answer 1

2 principal division:

Central Nervous System (CNS)

Peripheral Nervous System (PNS)

Question 2

Central Nervous System (CNS)

Answer 2

Consist of brain & spinal cord

Interpret incoming sensory information & issue instructions based on that information & passed experience

Question 3

Peripheral Nervous System (PNS)

Answer 3

Consist of the cranial & spinal nerves, ganglia, & sensory receptors

2 major subdivision:

• sensory portion:
• motor portion:

Question 4

Sensory Portion

Answer 4

Consist of nerve fibers that conduct impulses from SENSORY RECEPTORS TOWARD CNS

Subdivision of the PNS

Question 5

Motor Portion

Answer 5

Consist of nerve fibers that conduct IMPULSES AWAY FROM CNS

Subdivision of the PNS

Consist of 2 different System:
-Somatic division aka voluntary system

-Autonomic nervous system (ANS)

Question 6

Somatic division (aka voluntary system)

Answer 6

Controls the skeletal muscles

Part of motor portion which is subdivision to PNS

Question 7

Autonomic Nervous System (ANS)

Answer 7

Controls smooth & cardiac muscles & glands

Part of motor portion which is subdivision to PNS

Question 8

Neural Tube

Answer 8

During embryonic development of all vertebrates the CNS 1st makes it’s appearance as a simple tubelike structure

Extends down the dorsal median plane