Introduction to the Nervous System Flashcards
1
Q
Nervous System 2 main structural categories
A
Central NS
Peripheral NS
2
Q
CNS 2 structural categories
A
Brain
Spinal Cord
3
Q
PNS 2 structural categories
A
Cranial Nerves
Spinal Nerves
4
Q
PNS 2 functional divisions
A
Sensory (afferent) division:
Somatic Sensory Fibers- convey impulses from skin, skeletal muscles, and joints to CNS
Visceral Sensory Fibers- convey impulses from visceral organs to CNS
Motor (efferent) division:
Transmits impulses from CNS to effector organs
5
Q
PNS Motor (efferent) 2 division
A
Somatic Nervous System
Autonomic Nervous System
6
Q
PNS Somatic Nervous System
A
- Somatic motor nerve fibers
- Conducts impulses from CNS to skeletal muscle
- Voluntary Nervous System
- Conscious control of skeletal muscles
7
Q
PNS Autonomic Nervous System
A
- Visceral motor nerve fibers
- Regulates smooth muscle, cardiac muscle, and glands
- Involuntary nervous system
- Two Functional Subdivisions: Sympathetic and Parasympathetic
