Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

The Human Brain


What are the major subdivisions of the brain? Frontal, parietal, occipital, temporal
Primary Motor Cortex *controls movement opposite side*more specific movement has larger area e.g hands*homunculus map-somatotopical*
Primary Somatosensory Cortex *sensations(pain,pressure,touch,temperature)*somatotopical*opposite side*large area for sensitive body parts e.g face,hands*
Primary Visual Cortex *seeing from opposite side*visuotopical-retinotopical*information-->secondary visual cortices(supplementary)
Vision range relating to the brain innerfield=occipital lobe---peripheral/outer field=deeper in occipital
Primary auditory Cortex *sounds-input from ear*Audiotopic- high-->low frequency
Verbal Language areas Broca's speech region*wernicke's speech region*Exners area
Broca's speech region Instructs motor cortex for speech
Wernicke's Speech region speech recognition*Interprets words & audio
Exner's speech region
Asphasia speech disorder involved with the brain=Wernicke's or Broca's region
What connects the broca's and Wernicke's speech regions? Arcuate Fisculusis
Non-dominant hemishere -Right side *Artistic/musical skills *Spatial Skills *Emotional expression *Body language *Conceptual understanding
Frontal association Cortex *personality*intelligence*mood*behaivour*cognitive function
Temporal Association Cortex *intelligence*agression*mood*memory
Parietal Association Cortex *spatial skills-abstract perception-faces-written words -concepts
Sulcri gap between folds
Gyri folds
fissure very deep fold
Two important Gyri *supramarginal & angular gyrus *reading & Writing
how many desmosomes? *30*not associated with skin=4*each spinal nerve to different regions
spinal nerves names and numbers total=31 *cervical=8 *thoracic=12 *Lumbar=5 *sucral=5 *coccygeal=1
Encapsulated receptors *myelinated *pressure & touch *fast 50m/s *discriminative (precision) *schwann cell
Non-ecapsulated receptors *non-myelinated *slow 1m/s *temperature & pain *non-discriminative (less & not as precise)
Touch receptors *myelinated *Meissner corpuscles
Pressure receptors *myelinated *pacinian Curpuscles
Temperature & pain *free nerve endings
high density receptors highly sensitive areas e.g hands, face
Touch and pressure damage *spinal cord -same side of body *before decussation
Touch and pressure damage *brain/stem -opposite side of the body -after decussation
Pain and Temperature damage *brain/stem -opposite side of the body -after decussation
Pain and Temperature damage *spinal cord -opposite side of the body -before decussation
Lesions in the brain/stem -associative -both pain,temp,pressure,touch on opposite side
Lesions in the spinal cord -dissociative -opposite sides effected -pain&temp=opp -press&touch= same
Discriminative -myelinated -fast 50m/s -decussation in brainstem medulla - (gracile&cuneate nuclei) -touch
Non-discriminative -non-myelinated -slow 1m/s -decussation in spinal cord -anterior white commisure
Parkinson symptoms *mood *tremor at rest *Brandykinesia *hypokinesia *rigidity
Hypokinesia -reduced movements
Brandykinesia -slowness of movements -illegible writing
tremor at rest -pill rolling -shaking -normally upper limbs
mood -emotionally flat -can't express emotions & inner feelings (in face)
Rigid -increased muscle tone and tension -rigid face-->unemotional
Treatments -dopamine replacement -surgical lesions -deep brain stimulation
Dopamine replacement -L-dopa(precussor of Dopamine) addded and relies on cells to convert it -dosage incr. with disease progression =side effects
surgical lesions -pallidotomy -thalamotomy
Pallidotomy -pallidus globus -freeze cells -instant results -high accuracy but not success
Thalamotomy - VA-VL thalamus -one side of the brain only
Deep brain stimulation -no damage to cells -GPi, Thalamus, subthalamic nucleus
novel new treatments *adult brain stemcells *embryonicstemcells *immature nuerons (fetal) *genetically engineered *gene therapy
Upper motor nueron damge *spastic paraylsis *increased reflexes *decrease precise voluntary movement
Lower motor nueron lesion *Flaccid paralysis *no reflexes or movement-wasted muscle-polio
Created by: meglet