Neurons and Neuroglia
Carries impulses away from the cell body
What is an axon?
The system of "rest and digest"
PSY
components of the CNS
brain and spinal cord
Bundle of axons in the PNS
Nerve
Which cranial nerve is motor to the muscles of facial expression?
CN VII FACIAL
This type of neuron carries information to the CNS
Sensory (afferent)
chemical released by most postganglionic neurons of the sympathetic nervous system
NE
collection of cell bodies in the CNS
nucleus/nuclei
collection of cell bodies in the PNS
ganglion/ganglia
CN V is also known as ___________
Trigeminal Nerve
Type (structural) of neuron with multiple dendrites, one axon and cell bodies found within the CNS
Multipolar
Stimulation by this system dilates the pupil
Meningeal space containing CSF
Subarachnoid space
This nerve from the cervical plexus innervates the diaphragm
Phrenic N
What is the transparent outer layer of the eye?
Cornea
These multipolar neurons are found entirely within the CNS
Interneuron
What is the term for the continuous level of spontaneous (background) activity of the SY and PSY systems?
Autonomic tone
term for when tracts cross the midline in the brain or spinal cord
decussation
Nerves associated with T1-T11 spinal segments, involved in respiration
intercostal nerves
This membrane separates the outer and inner ear
Eardrum/Tympanic membrane
Structural classification of most sensory neurons
unipolar
Which system branch has relatively short preganglionic neurons and long postganglionic neurons?
SY
Primary motor area for voluntary muscles
Precentral Gyrus
Plexuses arise from which Rami of the spinal nerves?
Ventral
Which CN carries PSY fibers which innervate the pupillary constrictor?
CN III Oculomotor