quizziz
brain waves Alpha = Beta = Theta = tired- just asleep Delta =
awake buzzed, very awake tired- just asleep deeply asleep
nerve fiber is a
axon
association fibers
between gyri in same hemisphere
CNS consists of
brain and spinal cord
cell bodies of parasympathetic preganglionic neurons are located in
brainstem
ventral horn
efferent nuclei of somatic motor neurons
astrocyte
glial cell that forms blood brain barrier
Oligodendrocytes
glial cell that wraps axons in myelin sheath. analogous to Schwann cells of the PNS.
ependymal cells
glial cells that make CSF
cephalic region
head and neck
temporal lobe
hearing smell language
sympathetic increases or decreases everything, parasympathetic increases or decreases everything
increase, decrease
blood is delivered to the brain by the
internal cartoid and basilar arteries
order the flow of CSF through brain ventricles (top to bottom)
lateral ventricles-> interventricular foramen-> third ventricle-> fourth ventricle
the vagus nerve supplies organs...
literally everywhere
do women or men have a larger corpus callosum
women, they can multitask
can axons be repaired in the PNS
yes
synaptic ganglia
(where neurons meet) Sympathetic and parasympathetic
lateral horn
ANS preganglionic nuclei
Amyotrophic Lateral Sclerosis
Neuromuscular condition, destruction of ventral horn, motor neurons, and fibers of the pyramidal tract
genital engorgement and digestion is an example of
PSNS
Parasympathetic ganglia are known as:
terminal ganglia
dorsal horn
afferent nuclei of interneurons
paravertebral ganglia
aka sympathetic chain ganglia, form chain that runs along vertebral column
commissural fibers
allow communication from one hemisphere to another
gaba and glutamene
amino acids, gaba inhibitory, glutamene excitatory
This type of lens is given to those who have myopia.
concave
projection fibers
connect cerebral cortex to lower CNS
perineurium epineurium and endoneurium
covers... fasicles of nerves entire nerve nerve fiber
PNS consists of
cranial and spinal nerves
this contains nuclei that serve as relay stations for all sensory impulses
thalamus
Effects triggered by cholinergic neurons typically are (____longer or shorter__) lasting than those triggered by adrenergic neurons
longer
RAS is responsible for what?
maintaining consciousness and awakeness
the cerebellum is responsible for what?
maintenance of normal muscle tone, posture, and balance
reticulospinal tract
maintenance of posture
the brainstem contains what 4 things
medulla, pons, midbrain, reticular activating system
sensory receptors transmit which information
modality intensity location duration
ventral rami form
nerve plexuses
Unipolar, multipolar, bipolar neurons
only for sensory most common in body found in retina
depolarization of action potential
opening of sodium channels
Noiceptors
pain receptors respond to tissue injury/potentially damaging situations
spinothalamic
pathway carrying pain and temperature impulses
microglia
phagocytes
what major nerve comes off of cervical plexus
phrenic nerve
lipofuscin
pigment created by lysosomes when they digest worn out organelles
ependymal cells
produce CSF
adrenergic neurons
release norepinephrine
mechanoreceptors
respond to physical deformation
mixed nerves contain
sensory and motor fibers
babinski reflex
shows abnormalities in motor control pathways leading from cerebral cortex
dorsal rami
spinal nerve supplies nerves to muscles on back and skin
2 types of brain bleed
subdural and epidural
ANS consists of
sympathetic and parasympathetic
The communicating rami connects with the
sympathetic chain ganglia
the order of membrane vibration in the ear is
tympanic, basilar, tectorial
which are the only cranial nerves to extend beyond the cephalic region
vagus nerve X