A&P Neuro Test Flashcards
Neuron
Functional Unit of Neuro System
Neuroglial
Support Cells that are special because they can reproduce
Astrocysts
star shaped hold neurons close to small blood vessels
microglial phagocytes
eat dead neurons and tissue
oligodendrogcia
hold cells together
schwann cells
produce myelin
myelin
fatty substance that allows AP to jump down cells faster
ependymal cells
resemble epithelial cells; ciliates move csf across nerve tissues
Afferent
Sensory
carry impulses to CNS
Efferent
Motor
Carry impulses away from CNS
E = effect
Interneurons
connects sensory, motor, found in spinal chord
Synapse
functional junction between 2 neurons or a neuron and an effector cell (Muscle or gland)
Neuromuscular junction
the special synapse from a motor neuron to a muscle cell
Neurotransmitter
present in synaptic knob
have natural means of breakdown or removal from synaptic junction
Acetylcholine
stimulates skeletal muscle
Acetylcholine is ____ to skeletal muscles
excitatory
What breaks down Acetylcholine
acetycholineestarase
Norepinephrine
Keeps you “Up”
in brain emotion and behavior
Serotonin
Happy Transmitter
Sleep and Mood Regulation
Gaba
‘braking effect” helps coordinate movements
Encephalins/Endorphins
natural euphoric
Heart Sympathetic Response
Increase rate and force of contraction
Heart Parasympathetic
Decrease rate and force of contraction
Blood Vessels Sympathetic
Constriction in organs
dilation in heart/skeletal muscles
Blood Vessels Parasympathetic
NONE
Lungs Sympathetic
Dilation of bronchials
Lung Parasympathetic
constriction of bronchials
Digestive Tract Sympathetic
Decrease movement through GI tract Contract Sphincters
Digestive Tract Parasympathetic
Increase movement relax sphincters
Urinary Bladder Sympathetic
Relaxing
Urinary Bladder Parasympathetic
Contraction
Pupil of Eye sympathetic
Dilates
Pupil of Eye Parasympathetic
constricts to normal size
Sweat glands sympathetic
Increase Secretion
Sweat Glands parasympathetic
None
Salivary glands sympathetic
Increase Secretion
Salivary glands parasympathetic
None
Layers of Menengies
Outer - Dura Matter
Middle - Arachnoid
Inner- Pia Mater
CSF
Clear Watery fluid that resembles blood plasma deriver from coroidplexus.
CSF FXN
removes waste products of metabolism in CNS
CSF Contains
water, wbc, sodium, magnesium, glucose, potassium, calcium, etc
CSF SHOULD NOT contain
bacteria, viruses, RBC, HIGH WBC
How many cranial nerve pairs
12
How many spinal nerve pairs
31
Spinal nerves are S, M, B
ALL MIXED
Cervical Plexus location and function
neck movement
C1-C4
Brachial plexus location and function
Arm movement
C5 - T1
Lumbar Plexus
Lower Abdomen, anterior thigh, medial thigh, lower leg, big toe
L1-L4
Sacral plexus
Lower back, genitals, pelvis, posterior thigh, leg, dorsal and ventral foot
L4-L5 and S1-4
Largest Nerve in the Body
Sciatic Nerve
Thoracic Nerves
All single T1 - T12 that run between ribs
Interneurons
Communicating Neurons AKA associating Neurons
Ganglia
bunch of nerve cell bodies outside CNS
Sodium Potassium pump
Requires ATP
CSF is found where
Ventricles, subarachnoid space, spinal chord
I Olfactory
Smell
II Optic
Vision
III Ocular Motor
Eye Movement
IV Trochlear
Eye Movement
V Trigeminal
Facial Sensation and Chewing
VI Abducens
Eye Movement
VII Facial
Expression and taste
VIII Auditory (Vestibular Cocler)
Hearing, balance
IX Glassopharengel
Sensory tounge, swallow
X Vagus
Supplies organs in thoracic and abdomen
XI Accessory
Muscles of back and neck
XII Hypoglossal
Speech and swallowing
Nodes of Ranvier
exposed areas on axons or dendrites that allow AP to jump
its a space in the myelin
Medulla
Basic functions breathing and heart beat
Pons
above medulla fatter bridge to cerebellum how signals are sent
Midbrain
above the pons startle reflex visual and auditory
Thalamus
where all sensory signals except smell pass through. Pain, touch, temperature. Major processing area
Hypothalamus
below the thalamus. Temp control, energy water balance, ANS, runs life without conscious control of owner. controls digestion
Pituitary
hangs below the thalamus. Major functions of endocrine system.
Pineal Gland
anterior brain, controls biological clock. Deals with anything that is timed., produces melatonin, which controls day night cycles.
Cerebrum
largest part of the brain. separated into 2 halves and hemispheres. surgace area has bumps called gyri. has groves between bumps called sulci
frontal lobe
personality
parietal lobe
sensory intergration descides what to do with incoming signals
Occipital lobe
Center for vision and hearing
Temporal lobe
Brocas Area motor and speech
Wernickes Area
Speech understanding
Corpus Callosum
Connection between Right and Left sides of Brain
Cortex
means surface of brain. Not covering
grey matter
cell body highest level of thinking takes place
olfactory bulb
smell on both sides
cerebellum
looks like a cauliflower. Deals with balance and coordination.
Alpha Waves
awake but relaxes
Beta Waves
awake and alert
Theta Waves
common in children sometimes concentrating adults
Delta Waves
deep sleep, anesthesia, brain damage.
REM
rapid eye movement
Most dreaming occurs here
Non Rem 1
Relaxation begins alpha
Non REM 2
deeper, irregular sleep
Non REM 3
Very deep vitals decline
Non REM 4
delta, sleep walking, bedwetting.