Ch. 1 - Introduction Flashcards
What are the two ANATOMICAL divisions of the nervous system?
- Central Nervous System
2. Peripheral Nervous System
What is the central nervous system composed of?
Brain & spinal cord
What encloses the central nervous system?
Bone
- Skull encloses the brain
- Vertebral column encloses the spinal cord
What makes up the peripheral nervous system?
- Cranial nerves
2. Spinal nerves
Where do cranial nerves emerge from?
The brain and brain stem
Where do spinal nerve emerge from?
The spinal cord
What are the 3 FUNCTIONAL divisions of the nervous system?
- Somatic nervous system
- Visceral
- Autonomic
What kind of information does the somatic nervous system convey and process?
Afferent information from the head, body wall, and extremities (both conscious and unconscious)
What type of information does the autonomic nervous system convey and process?
- Afferent information from visceral organs
2. Motor control of involuntary and cardiac muscles, and glands of the viscera
What are the 3 divisions of pathways?
- Sensory pathways
- Motor pathways
- Processing centers
Where do sensory pathways originate?
In sensory receptors
Where do motor pathways originate?
From the nervous system
What are the targets of motor pathways?
Muscles and glands
What are processing centers?
Neural cell groups and processes which interconnect various parts including the sensory and motor systems for the purpose of integration
“Towards the beak” or in the direction of the frontal pole
Rostral
