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155 Cards in this Set

  • Front
  • Back
Autonomic Nervous System (ANS)
subdivision of peripheral nervous system
Peripheral Nervous System (PNS)
nerves that extend to the outlying parts of the body; branches off
Central Nervous System (CNS)
Brain & Spinal cord
Dendrite
branching projection of neurons
schwann cell
forms myelin outside the CNS
another name for motor neuron
efferent
Nodes of Ranvier
indentions between adjacent schwann cells
Facicles
groups of wrapped axons
epineurium
covers whole nerve
a group of nerve-cell bodies located in the PNS ?
inter-neurons
simplest kind of reflex arc
2 neuron arc
3 neuron arcs contain what types of neurons ?
1. sensory neurons
2. inter-neurons
3. motor neurons
impulse in reflex arc starts in ?
Receptors
what is a synapse?
space that separates the axon of 1 neuron from the dendrites of another neuron.
what is a reflex?
response to impulse conduction over reflex arcs
what is a withdraw reflex ?
Contraction of a muscle ; causes pull away
what is ganglion ?
group of nerve-cell bodies in the PNS
true or false: All inter-neurons lie entirely within the gray matter of the CNS
True
what impulse causes knee-jerk?
patellar reflex
endorphins & enkephalins are neurotransmitter that conduct ____ impulses
pain
neurotransmitters are chemicals that allow nuerons to ____
communicate w/ each other
Acetycholine is an example of __
neurotransmitter
A Synaptic knob is a tiny bulge at the end of
post-synaptic neurons axons
true or false:
Nerve impulses continually race along every nerve cell's surface.
false ; do not
what is the Medulla ?
part of brainstem that joins the spinal cord to the brain
what is NOT a function of the brainstem ?
centers for speech & memory.
ADH is produced by ?
Hypothalamus
4 Functions of the Hypothalamus
1. controls heart rate
2. constrictions of blood vessels
3.contraction of stomach
4.produces hormone
What is the Thalamus ?
arousal or alerting mechanism
4 functions of cerebrum ?
1. memory
2. awareness of sensations
3. consciousness
4.movement
simplest kind of reflex arc
2 neuron arc
3 neuron arcs contain what types of neurons ?
1. sensory neurons
2. inter-neurons
3. motor neurons
impulse in reflex arc starts in ?
Receptors
what is a synapse?
space that separates the axon of 1 neuron from the dendrites of another neuron.
what is a reflex?
response to impulse conduction over reflex arcs
what is a withdraw reflex ?
Contraction of a muscle ; causes pull away
what is ganglion ?
group of nerve-cell bodies in the PNS
true or false: All inter-neurons lie entirely within the gray matter of the CNS
True
what impulse causes knee-jerk?
patellar reflex
endorphins & enkephalins are neurotransmitter that conduct ____ impulses
pain
which lobe is responsible for perception of sound
temporal lobe
visual perception is located in the ?
occipital
largest section of brain
Cerebrum
Parkinson's disease is a disease of
Cerebral nuclei
cerebrovascular accident is also known as
stroke
What is Basal Ganglia ?
gray matter in cerebrum
NOT a function of cerebellum
Associates sensations w/ emotions
3 functions of cerebellum
1. equilibrium
2. movements
3. maintain posture.
what are Spinal Tracts?
bundles of myelinated nerve fibers; make columns of spinal cord.
loss of sensation by spinal cord injury
anesthesia
Olfactory
sense of smell
optic
sight/vision
2 systems regulate body function
1. nervous system
2. endocrine system
dopamine, serotonin belong to group of compounds called ?
catecholamines
plays role is arousal & alerting mechanism & produce sensations
Thalamus
connects impulses from the sensory neuron to motor neuron
inter-neurons
2 subdivisions of PNS
1. ANS (autonomic nervous system)
2. Somatic Nervous System
function of ANS
regulates involuntary vital function. ex/ heart, breathing . etc)
function of Somatic Nervous System?
controls voluntary actions of skeletal muscles
efferent neurons are also known as
motor neurons
afferent neurons are also known as
Sensory neurons
group of peripheral axons is
nerves
Parkinson disease is a deficiency of what neurotransmitter
dopamine
3 parts of brain stem
1.medulla oblongata
2. pons
3.midbrain
3 layers of Menegines ?
1. Pia Matter
2.Dura Matter
3. Arachnoid Matter
considered a seizure disorder
epilepsy
stabbing pain in trigeminal nerve in head called Trigeminal Neurologia is also known as ?
Tic Doulourex
carries impulses toward cell body
dendrites
vital center of brain
Medulla Oblongata
knee- jerk is a type of
reflex arc
simplest nervous system pathway
2-Neuron pathway
carries nerves impulses away from the body
axons
reactivation of varicella virus (chicken pox)
Shingles
stroke & cerebral palsy is causes by lack of ?
oxygen to the brain
2 NERVES part of pns
1. Cranial nerves
2. Spinal nerves
Mylein disorder
M.S (multiple Sclerosis)
2 neurotransmitter act morphanie0like help w/pain
1. endorphins
2. enkephalius
cerebrospinal fluid fills spaces in brain cell cerebral
Ventricles
inherited disorder ; purposeless movement progressing to dementia
Huntington Disease
what is meningitis?
inflammation if the meninges
common type of tumor
glioma
2 types of cells found in nervous system
1. glia
2. nerves
what is Pons?
part of brainstem; pathway between brain & body.
function of spinal cord
carries messages to & from brain & rest of body
Medulla Oblongata centers
cardiac, respiratory & vasomotor center
Gustatory Cells
sense of taste
function of General Sense organ ?
detects pain or touch
4 special senses
All located on Face:
1. Taste
2. Smell
3. Eye
4. Ears
function of Special Senses
Detect environmental stimuli & transduce energy into electrical impulses.
white part of eye is commonly known as
Sclera
Colored part of eye
iris
"window" of eye
cornea
mucous covers front of eye
conjunctiva
contracts & dilates pupil allowing more or less light to enter
iris
lens is held in place by
ciliary muscle
condition; eye can no longer focus on near objects
Presbyopia
FLUID in front of eye. constantly formed & drained
Aqueous Humor
if aqueous humor drainage is blocked , it causes pressure & cases what condition >
Glaucoma
Rods & cones located in
Retina
Blind spot also called
Optic Disc
night blindness
NYctalopia
Pink eye
Conjunctivitis
cloudy spots on lens
cataracts
Hyperopia
Farsightedness
loss of center visual field
Scotoma
irregularity in cornea
astigmatism
2 parts of external ear
1. Pinna ((Auricle))
2. External Acoustic Canal
Tympanic Membrane also called
eardrum
bones of middle ear called
Ossicles
stapes presses against
oval window
middle ear infection called
Otitis media
"Ringing in Ear"
Tinnitus
Hearing loss with age
Presbycusis
chronic inner ear disease; nerve deafness & vertigo
Meniere Disease
Structures found on tongue
papillae
nerve impulses of taste buds travel through 2 ___ nerves
Cranial
Type of Receptor ; sense of smell
Chemo-receptors
to be detected in olfactory receptors, chemicals must be dissolved in
mucus; that lines nasal cavity.
photoreceptors for night vision
rods
photoreceptors for day vision
cones
cones see what 3 colors
1.Red
2. Green
3. Blue
where are Ossicles
middle ear
what is Christae Ampullares & where is it
man Christina won the Mechanical Race.She Circles Champions
mechanical receptor; semi-circle canal. (helps w/ balance)
2 chemoreceptors & function
1. Gustatory-taste
2 Olfactory - smell
2 Propioceptors
1. golgi tendon
2 muscle spindles
where is pinna
external ear
common name for sclera
white of eye
if eyeball is too short from front to back it causes what condition ?
Hyperopia (Farsightedness)
leading cause of blindness in elderly ?
Macula Degeneration
3 Refraction Disorders
1.Hyperopia
2.Cataract
3.Myopia
main function of sense receptors?
-Detect
-Convert
-Perceive
receptor; sense of balance & hearing
mechanoreceptors
3 functions of inner ear
- hearing
- balance
- equilibrium
Auditory tube also called
Ustatium tube
where is auditory tube
between middle ear & throat
known as "window of eye"
cornea
greatest # of touch receptors on body
fingertips
3 layers of Eye :
1.Sclera
2. Retina
3. Choroid
what is sclera
outer layer;no light comes though
What is retina
(contains?)
Contains rods & cones
what is choroid
middle layer; contains blood vessels & nerves; Scatters light.
2 structures make part of choroid
Iris & scerly muscles
where is " Organ of Corti" & what does it do
Cochlea ; generate nerve impulses for hearing .
elongated eyeball causes what condition ?
Myopia (nearsightedness)
what is a 2 point Discrimination?
distinguish 1 touch stimulations from 2
Fovea
cones; on retina
what are Proprioceptors ?
special receptors; near tendents & muscles
what is Perilymph
watery fluid
what is Endolymph?
Thick liquid in Inner Ear (vestibule, semi circular canals & cochlea
where is cochlea ?
inner ear
3 bones of ossicles:
(SIM)
1. Malleus
2. Incus
3. Stapes
3 bones of ossicles:
1. Malleus
2. Incus
3. Stapes
Pinna is also called
auricle
3parts of middle ear
middle child; Venny, Seriously, Control & Calm
vestibule, semicircular canals, and cochlea
divisions of the autonomic nervous system (ANS)
sympathetic nervous system and parasympathetic nervous system