the brain. order of the brain evolutionary view primitive central core, limbic layer, cerebrum...
TRANSCRIPT
Order of the Brain
Evolutionary ViewPrimitive central core, limbic layer, cerebrumNeurobiological ViewForebrain, midbrain, hindbrain
Studying the Brain
How do you know what something does?You destroy it!!!!Natural or intentionalLesionsProblems with intentional???Stereotaxic surgery
Measuring Brain Function
EEGPET scan- (glucose)CAT Scan (computerized axial tomography)MRI (magnetic resonance imagery) (fMRI)
The Spinal CordRuns along center of backProtected by 24 vertebraeBetween them are discsBase of brain down to the waistCoccyx (tail bone)Transfers data, runs reflexes
Spinal Cord
Filled with fluid (cerebral spinal fluid or CSF)Produced in brain ventriclesSpinal tapEpidural dripEncephalitis/meningitis
Spinal Cord Damage
Paraplegic vs. quadraplegic
Matters where the damage is done
Further up, worse off it is.
Approve or disapprove?
Should they have let her die if only the life sustaining portions of the brain were still functioning?
Yes (A) or no (B)?Senteo QuestionTo set the properties right click and select Senteo Question Object->Properties...
The Cranial Nerves
12 pairs
2 connect to cerebrum
10 to the medulla
actions from the shoulders up
kind of obvious
The Cerebrum
Cerebral cortex
higher level thinking
two hemispheres
great longitudinal fissure
4 lobes
each has specific function
FRONTAL LOBE
Primary motor cortex- controls mvts. Of the body.
Not equally distributed
prefrontal cortex- memory, intelligence, personality, concentration
apraxias- dressing; copying
TEMPORAL LOBE
Primary Auditory Cortex- hearing, balance and meaning
Wernicke’s Area- language and speech
Wernicke’s Aphasia- words are meaningless
The Hemispheres
Asymmetrical
LEFT: controls right side functions
language production, logic, sequences, analytical
VISION: A SPECIAL CASE...
Controls the opposite FIELD of vision*********
left field, right brain
right field, left brain
communication b/w sides
Endocrine System
GlandsHormonesInteracts with the nervous systemSome are mysterioushttp://www.hormone.org/Endo101/gland_diagram.cfm
What do you think?
Is keeping a disabled child permanently small for the convenience of his/her caretakers the right thing?
YES (A) or NO (B) Senteo QuestionTo set the properties right click and select Senteo Question Object->Properties...
What do you think?
Is giving a short child hormones to grow the right thing?
YES (A) or NO (B) Senteo QuestionTo set the properties right click and select Senteo Question Object->Properties...
Pituitary Gland
The master glandGrape-sizedRegulate all other glands in the bodyTold what to do by hypothalamus
Pituitary Glandhttp://www.hormone.org/Endo101/page2.cfm#CP_JUMP_821
puberty growth spurt, stimulating thyroid ACTH- learning, memory, and cortisolLH, FSH, oxytocin, vasopressin
Adrenal Glands
On top of the kidneys
Epinepherine and norepinepherine
STRESS!!!! Fight or flight!
Steroids
Brain Damage
Stroke- temporary loss of blood flow
Concussions- bruising of the brain
Cerebral palsy- lack of oxygen
Tumors/cancer
Other Brain IssuesAlzheimer’s Disease-plaques?
Huntington’s Disease
Parkinson’s Disease
Tourette’s Syndrome
Multiple Sclerosis