Term
| PNS consists of (2 types of nerves) |
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Definition
cranial nerves
spinal nerves |
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Definition
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Definition
involuntary
sympathetic
parasympathetic
enteric
stress response, homeostasis and housekeeping. |
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Term
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Definition
motor neurons = efferent
sensory neurons = afferent |
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Term
| nerve cell is called a... |
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Definition
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Term
| motor neurons carry info .... |
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Definition
...away from the CNS
...for muscle control |
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Term
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Definition
- PNS
- cover dendrites and axons
aka neurolemmacyte |
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Term
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Definition
gap btwn schwann cells
-depolarization occurs here |
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Term
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Definition
jumping of electric impulse from each node of ranvier
- myelination allows this |
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Term
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Definition
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Term
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Definition
one type of neuroglia that forms myelin sheath
- cannot regenerate |
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Term
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Definition
| collection of axons in CNS |
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Term
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Definition
| collection of axons in PNS |
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Term
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Definition
| collection of neurons in CNS |
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Term
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Definition
| collection of neurons in PNS |
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Term
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Definition
space btwn axon and dendrite
-neurotransmitters are released to span this gap |
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Term
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Definition
| Ach causes post sympathetic neuron to depolarize causing electric impulse |
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Term
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Definition
| hyperpolarizes, maintains homeostasis |
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Term
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Definition
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Term
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Definition
| cell bodies of interneurons and motor neurons |
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Term
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Definition
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Term
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Definition
stretch - like patella
flexor - pain
not sent to brain |
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Term
autonomic
action/communication/pathway/controlled by |
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Definition
involuntary action
communicates with visceral motor neurons on visceral effectors
pathway from CNS > preganglionic neuron > ganglion > post ganglionic neuron > visceral effector
controlled by hypothalamous |
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Term
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Definition
thoracolumbar division
dominant in stressful situations
4Fs
fleeing
feeding
fighting
fucking |
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Term
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Definition
craniosacral division
localized response
"housekeeping" |
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Term
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Definition
| midbrain, pons, medulla and S2 - S4 |
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Term
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Definition
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Term
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Definition
| sheath around peripheral axons and dendrites |
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Term
| 3 functions of the nervous system |
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Definition
1. detect changes/ feel sensations
2. initiate appropriate responses
3. organize info for immediate use or store for future use |
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Term
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Definition
| relays info to and from CNS |
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Term
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Definition
| prevents harmful waste products in blood from diffusing out into brain tissue |
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Term
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Definition
more Na+ ions outside cell
more K+ and - inside the cell |
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Term
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Definition
| reversal of charges on the membrane |
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Term
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Definition
| depolarization followed by repolarization |
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Term
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Definition
| as soon as depolarization takes place, K + ions rush out of cell, restoring + charge outside and - charge inside the cell. |
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Term
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Definition
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Term
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Definition
| carry sensory impulses to brain |
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Term
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Definition
| carry motor impulses away from beain |
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Term
| ventral canal contains... |
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Definition
| ventral canal contains cerebrospinal fluid |
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Term
| spinal nerves come from... |
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Definition
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Term
| cervical nerves supply... |
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Definition
| back of head, neck, shoulders, arms and diaphragm |
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Term
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Definition
1st thoracic nerve serves the arms
other serve the trunk of the body |
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Term
| lumbar and sacral nerves supply... |
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Definition
| hips, pelvic cavity and legs |
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Term
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Definition
where lumbar and spinal nerves hang below the end of the spinal cord
"horse's tail" |
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Term
| each spinal nerve has ___ roots |
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Definition
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Term
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Definition
| made of sensory neurons that carry impulses to spinal cord |
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Term
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Definition
| enlarged part of dorsal root, that contains cell bodies of sensory neurons |
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Term
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Definition
| group of cell bodies outside of the CNS |
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Term
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Definition
motor root
made of the axons of the neurons carrying impulses from spinal cord to muscles |
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Term
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Definition
| involuntary response to stimulus |
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Term
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Definition
| do not depend directly on the brain |
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Term
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Definition
1. receptors
2. sensory neurons
3. CNS
4. motor neurons
5. effector |
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Term
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Definition
| a muscle that is stretched will automatically retract |
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Term
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Definition
(withdrawal reflexes)
pulls away from painful stimulus |
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Term
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Definition
| cervo vascular accident (stroke or hemorrhage) |
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Term
Brain:
if O2 interrupted for 10 sec |
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Definition
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Term
Brain:
if O2 interrupted for 1-2 min |
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Definition
| significant impairment of neural function |
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Term
Brain:
if O2 interrupted for 4 minutes |
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Definition
| irreversible brain damage |
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Term
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Definition
oligodendrocyte
microglia
astrocyte
ependyma |
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Term
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Definition
| forms myelin sheath, cannot regenerate |
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Term
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Definition
| phagocytosis of pathogens |
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Term
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Definition
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Term
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Definition
lines ventricles
has cilia (sweepers)
promotes circulation of CSF |
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Term
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Definition
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Term
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Definition
2 respiratory centers
regulate breathing pattern |
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Term
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Definition
2 respiratory centers
regulate breathing pattern |
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Term
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Definition
| regulates HR, BP, breathing, reflexes |
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Term
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Definition
| visual and auditory reflexes, movement of eyeballs, balance |
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Term
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Definition
coordination
muscle tone
posture, equilibrium |
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Term
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Definition
regulates endocrine glands
homeostasis
emotional behavior
sleep/wake cycle
memories |
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Term
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Definition
sensation
emotional/memory
alertness/wakefulness |
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Term
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Definition
frontal
parietal
temporal
occipital |
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Term
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Definition
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Definition
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Definition
smell
auditory
learning
memory
visual recognition |
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Definition
visual
spatial relationships |
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Term
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Definition
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Term
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Definition
dura mater
arachnoid
pia mater |
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Term
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Definition
grey matter within white
subconscious acts of involuntary movement |
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Term
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Definition
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Term
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Definition
buoyancy
protection
chemical stability |
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