Neuro Flashcards
what is the network of nerves located in the gastrointestinal tract?
Enteric Motor Neurons (involuntary) in enteric plexuses
how many spinal nerve pairs do we have and name each category?
31 spinal nerve pairs
- 8 pairs in the cervical
- 12 pairs in the thoracic
- 5 pairs in the lumbar
- 5 pairs in the sacral
- 1 in the coccygeal
what are the motor neurons that carry neural impulses away from the CNS and toward muscle to cause contraction?
efferent
what is the name of the sensory neurons that carry impulses from the sensory stimuli toward the CNS?
afferent
structural classes of a neuron
unipolar
bipolar - special senses
multipolar- most common in the body
what supports, nourishes, and protect neuron and is critical for homeostasis?
neuroglia
what cell produces myelin around the pns neuron
schwann cells
what cells produce myelin around the CNS neuron?
oligodendrdrocytes
what cell produces CSF?
ependymal cells
What cell forms the blood brain barrier
astrocytes
what is the bundle of axons in the PNS called?
Nerve
what is a bundle of axons in the CNS called?
Tract
what nervous system includes cranial nerves, spinal nerves and sensory nerves??
PNS
what nervous system controls thoughts emotions and memories
central nervous system
what nervous system conveys information from sensory receptors in the head, body wall and limbs and from the receptors for special senses (vision, hearing, taste and smell) to CNS and conduct motor impulses from the CNS to skeletal muscles
somatic nervous system
what nervous system conveys sensory information in visceral organs (stomach/lungs) to CNS and conduct motor impulses from CNS to smooth muscle, cardiac muscles and glands?
autonomic nervous system
what nervous system is called brain of the gut, monitors chemical changes in the GI tract, stretching walls, regulate acid secretion and endocrine cell secretions?
enteric nervous system
what are the meningeal layers?
dura mater
arachnoid mater
pia mater
what is the most outer meningeal layer?
dura mater
what is the middle meningeal layer and resembles spider web?
arachnoid layer
what is the inner, thin and delicate and adheres to surface of the spinal cord and brain?
pia mater
it also contains numerous blood vessels(
what is the name of the space cerebral spinal fluid travels?
subarachnoid space
what space helps protect and cushion and is between the vertebrae and dura mater?
epidural space
what is the name of the two spinal cord grooves?
anterior median fissure
posterior median sulcus