The Nervous System ^

Question 1

What is the Nervous System?

Answer 1

• main communication system
• based on electric and chemical signals
• Quick - 0.25 sec or 100 miliseconds

Question 2

Functions (Nervous System)

Answer 2

• collect, process, respond to info from envinronment
• coordinate the workings of cell/organ in body

Question 3

Brain (NS)

Answer 3

conscious awareness.

• Cerebral Cortex
  : outer layer

Question 4

Spinal Cord

Answer 4

• Extension of brain
• pass messages from/to brain
  : connects nerves to peripheral nervous sys.
• responsible for reflex actions

Question 5

Autonomic NS

Answer 5

• involuntary vital functions
• heart/breathing rate
• Sympathetic NS
  : fight or flight
• Parasympathetic NS
  : rest and digest
  : bring back to normal state

Question 6

Somatic NS

Answer 6

• controls voluntary movements
• receives info from sensory receptors

Question 7

Fight or Flight

Answer 7

shows interaction between nervous and endocrine system
- involve hormones and neurotransmitters

Hypothalamus - balance
Pituitary Gland
Sympathetic NS
Adrenal Gland - adrenaline/noradrenaline