Module 6 Flashcards
Peripheral Nervous System
Nerves outside of the brain and spinal cord
Divisions of the Peripheral Nervous System
Sensory (Afferent) and Motor (Efferent)
What Does the Sensory (Afferent) Division do?
Transmits sensory information from the periphery nervous system to the central nervous system
What does the Motor (Efferent) Division do?
Transmits motor commands from the central nervous system to the periphery
Further Divisions of the Motor Division
Somatic and Autonomic
Somatic Division
Voluntary motor control of skeletal muscles
Autonomic Division
Involuntary motor control of smooth and cardiac muscle. Includes the sympathetic and parasympathetic system
Sympathetic
Flight or fight response
Parasympathetic
Rest and digest response
Cranial Nerves
Emerge in pairs from the brain and brain stem. There are 12 cranial nerves, Some carry only sensory information, only motor or both
CN I Name
Olfactory
CN I Function
Sensory only - Smell
CN II Name
Optic
CN II Function
Sensory only - Vision
CN III Name
Oculomotor
CN III Function
Motor only - movement of the eyes
CN IV Name
Trochlear
CN IV Function
Motor only - Movement of the eye
CN V Name
Trigeminal
CN V Function
Sensory - forehead, eye, upper jaw, lower jaw
Motor - muscles of mastication
CN VI Name
Abducens
CN VI Funciton
Motor only - movement of the eye
CN VII Name
Facial
CN VII Function
Sensory - taste for anterior 2/3 of tongue
Motor - Muscles of facial expression, parasympathetic innervation of tear and salivary glands