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AP Psych: Biological Basis of Behavior
The Brain, Nervous System, & Neurons
61
Psychology
12th Grade
05/04/2009

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Cards

Term
Brocka's Aphasia
Definition
- damage to the left frontal lobe
- inability to speak cohesively
- expressive aphasia
Term
Wiernike's Aphasia
Definition
- damage to the left temporal lobe
- inability to comprehend language
- receptive aphasia
Term
Agnasia
Definition
- inability to recognize objects via sensory clues or the five senses
- "can be helped via touch clues"
Term
Lesion
Definition
A damaging of brain tissue
Term
Ablation
Definition
Removing of sections of brain tissue
Term
Split Brain Operation
Definition
- cutting of the Corpus Collusm (which connects the two hemispheres)
- used to aid in severe epilepsy
- causes issues in the transfer of information from one hemisphere to another
Term
Left Hemisphere
Definition
- Math
- Analytical Skills
- Verbal
Term
Right Hemisphere
Definition
- Art
- Holistic functions (face recognition and emotion recognition in others via facial expressions)
-musical
-spatiel
Term
CAT or CT Scan
Definition
- X-rays of the brain from various angles
- Show extent of lesions
- Does not show function only structure
Term
MRI
Definition
- Takes images of the brain by reading magnetic field, radio waves, density.
Term
fMRI (functional MRI)
Definition
- Uses changes in oxygen levels to map out brain activity, for the oxygen causes changes in the magnetic field
- Shows function
Term
EEG
Definition
Using electrodes placed on the scalp it can measure brain waves. Also registers evoked potentials.
Term
Evoked Potentials
Definition
- the change in voltage which is a response to a specific stimuli
Term
PET
Definition
Tracks tracers attached to glucose molecules in the brain, tracing metabolic activity.
Term
Association Areas
Definition
Area of the cerebral cortex not associated with motor or sensory information, but higher order functions such as thinking, logic, and planning.
Term
Motor Cortex
Definition
The part of the cerebral cortex in which movement is coordinated, activities of the skeletal muscles are integrated.
Located in the frontal lobe.
Term
Somatosensory Cortex
Definition
Where touch sensations are processed.
Term
Medulla Oblongata [or maybe just Medulla? hehe.]
Definition
Controls breathing rates, heart rates, digestion, vomiting, and blood flow.
Located above the spinal cord.
Where most fibers cross resulting in contralateralization.
Term
Pons
Definition
Includes reticular formation [critical for arousal & wakefulness]
Term
Cerebellum
Definition
- helps coordinate motoer function via information from muscles & inner ears
- helps maintain balance
Term
Thalamus
Definition
Relay center for visual, somatosensory, auditory, and taste sensations.
Term
Hypothalamus
Definition
- helps determine biological rhythems (menstrual cycle)
- helps to set some emotions with the limbic system [ie: rage]
- secrets hormones which regulate hormones from the pituitary gland
-sets appetite drives [ie; sex, thirst, hunger]
- controls heart rate and body temperature via the medulla, controls the parasympathetic and sympathetic centers in the medulla,
Term
Hippocampus
Definition
Important in storing long term memories & dreams.
Term
Amygdala
Definition
influences fear and aggression
important for sensory memory
Term
Cerebral Cortex
Definition
processes and receives motor and sensory information and directs movement
Term
Central Nervous System
Definition
Brain & Brain Stem
Term
Peripheral Nervous System
Definition
somatic & autonomic
Term
Somatic Nervous System
Definition
Contains motor neurons that stimulate muslcle movement
Term
Autonimic Nervous System
Definition
- Sympathetic Nervous System
- Parasympathetic Nervous System
Term
Sympathetic Nervous System
Definition
Helps to prepare body in times of stress:
dilate pupils, stop digestion, increased heart and breathing rates, inhibition of tear ducts.
Term
Parasympathetic Nervous System
Definition
To return the body to a normal state after sympathetic stimulation
- return pupils to normal size, restart digestive processes, restore normal bladder contractions, stimulate tear glands, slow down breathing & heart rates.
Term
Glial Cells
Definition
- direct growth of developing neurons
- provide nutrition & remove waste
- speeds up conduction via myelin sheath.
Term
Soma - Cytol - Cell Body
Definition
Contains cytoplasm & nucleus
Directs synthesis of neurotransmitters
Term
Axon
Definition
Long connective fiber, down which wave of depolarization & repolarization travels.
Term
Dendrites
Definition
Branch-like tubules which receive neurotransmitters
Term
Terminal Buttons - Axon Terminals
Definition
Where neurotransmitters are sent from in synaptic vesicles.
Term
Action potential
Definition
- an influx of sodium ions into the cell, which causes a change in potential, & if stimulated to threshold will cause action potential
"all or none principle"
Term
Refractory Period
Definition
Time right after the depolarization and repolarization occur.
After this is the resting potential
Term
Endocrine System
Definition
Composed of glands which secrete hormones.
Term
Pineal Gland
Definition
- Melatonin: important of maintaining circadian (sleep) rhythm and associated with seasonal affective disorder
Term
Pituitary Gland
Definition
Secrets hormones with inhibit or excite other glands.
Secretes growth hormones.
Term
Thyroid Gland
Definition
Thyroxin: stimulates and maintains metabolic activity.
low levels of thyroxin lead to mental retardation
Term
Parathyroid
Definition
Parathyroid hormones which help maintain calcium ion levels in the blood
Term
Adrenal Gland
Definition
Adrenal Cortex: secretes steroids, such as cortisol a stress hormone.
Adrenal Medulla: secretes adrenaline (epinephrine) and noradrenaline (norepinephrine)
Term
Ovaries/Testes
Definition
Gonads necessary for reproduction and secondary sex characteristics
Term
Pancreas
Definition
Insulin and glucogen regulate glucose on the blood [needed for all metabolic activities]; imbalances lead to diabetes and hypoglycemia respectively.
Term
Parts of the Endocrine System
Definition
Pituitary Gland, Pancreas, Hypothalamus, Thyroid Gland, Parathyroids, Ovaries/Testes, Adrenal Gland, Pineal Gland
Term
Turner's Disease
Definition
Females lacking an X chromosome
lack ovaries, webbed kneck, short, fail to develop secondary sex characteristics
although normally intelligent, have efficiencies in math and spatial abilities.
Term
Klinefer's Disease
Definition
males with xxy chromosomes
evident when males do not develop secondary sex characteristics, but instead breast tissue
Term
Down Syndrom
Definition
3 sets of chromosome-21
round head, flat nasal bridge, protruding tongue, poor coordination and muscle tone, small ears.
typically mentally retarded
Term
Alzhiemer's Disease
Definition

familial Alzheimer's Disease is caused by a gene attached to the chromosome-21

not all cases are like this

- caused by deficiencies in Acythelcholine (involved in memory, muscle movement)

Term
Schizophrenia
Definition
Too much dopamine
Term
Parkinson's Disease
Definition
Dopamine deficiency
Term
PKU (Phenylketonuria)
Definition

- causes irreversible brain damage unless baby is fed diet low in phenylalanine.

 

 

Term
Depression
Definition
Serotonin deficiency
Term
Albanism
Definition

Failure to synthesize and store pigment

also abnormal nerve pathways resuling in inability to percieve depth or three-dimensionality with both eyes.

Term
Huntington's Disease
Definition

Dominant gene defect which involves degeneration of the nervous system

jerky movement, personality shifts such as faulty accusations and temper tantrums, blindness, tremors, and death

Term
Color-Blindness
Definition

A sex-linked trait

more often seen in man because the X chromosome has the recessive gene

Term
Forebrain
Definition
Cerebral Cortex (Cerebral Hemispheres), the thalamus, the hypothalamus
Term
Hind-Brain
Definition

brain stem

(important for reflexes)

Term
Limbic System
Definition

- part of the brain associated with emotion

hippocampus, fornix, amgydala, and hypothalamus

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