LEcture 06 Nervous system introduction, Brachial PLexus

Question 1

What are major components of the nervous system ?

Answer 1

• CNa
  
  • brain
  • spinal cord
• PNS
  
  • Cranial nerves
  • spinal nerves
• ANS
  
  • Sympathetic
  • parasympathetic

Question 2

WHat are the functions of the nervous system?>

Answer 2

1. Functions:

SENSORY

MOTOR

COGNITIVE

Question 3

What are characteristics of the CNS ?

Answer 3

• Unpaired, bilaterally symmetrical structures extending along the longitudional axis of the mid sagittal plane of the body
• structures arising directly from the nerual tube
• includes spinal cord and brain

Question 4

What are the characteristics of the peripheal nervous system?

Answer 4

Made up of nerve pathways carrying information b/w the CNS and the external and internal environemnts.

Contains AFFERT (sensory) pathways carries info to CNS

COntains EFFERT (motor) Pathways carry info away from CNS

Cranial nerves and spinal nerves

Question 5

How many cranial nerves and spinal nerves are there?

Answer 5

Cranial nerves : 12 pairs

Spinal nerves: 31 pairs

Question 6

What are characteristics of the Autonomic Nervous System?

Answer 6

Entirey motor,

innervates smooth muscle and glands

Sympathetic and parasympathetic

Question 7

Why did Dr. Anderson seperate PNA and ANS?

Answer 7

BEcause the ANS is entirely motor and does use trasnsmit sensory info back to the CNS