Nervous System

Question 1

What is the Central NS?

Answer 1

• Spinal cord - a column of nerves between the brain and peripheral nervous system
• Brain stem - Connects the brain to the spinal cord
• Brain - divided into three major parts; hindbrain, midbrain and forebrain

Question 2

What is the Peripheral NS?

Answer 2

• The automatic NS - regulates involuntary bodily processes, including heart rate, respiration, digestion and pupil contractio, operates automatically without conscious direction
  
  • Sympathetic NS - prepares the body for action and stress (figtht or flight)
  • Parasympathetic NS - calms the body and helps the body to conserve energy
• The Somatic NS - carried sensory information from sensory organs to the CNS and relays motor comands to muscles, controls voluntary movements

Question 3

What is the neural pathway?

Answer 3

1. Stimulus
2. Receptor
3. Afferent or sensory neuron
4. Integration center
5. Efferent or motor neuron