MCAT Quicksheets BS Flashcards
What are the three types of neurons in the nervous system
Motor (efferent)
Interneurons
Sensory (afferent)
What is the parasympathetic nervous system responsible for
Rest and Digest functions Constrict Pupils Stimulate saliva flow Slows heartbeat Contracts bladder Acetlycholine
What is the sympathetic nervous system responsible for
Fight or Flight responses Dilates pupils Inhibits salivations Fast heartbeat Secretion of adrenaline and noradrenaline
What are the lobes of the cerebral cortex
Frontal
Parietal
Occipital
Temporal
Frontal lobe funtions
Executive functions Impulse control Long term planning Motor function Speech production
Parietal lobe functions
Sensation of touch
Spatial processing, orientation, and manipulation
Occipital lobe functions
Visual processing
Temporal lobe functions
Sound processing
What is the organization of the brain
Hindbrain
Midbrain
Forebrain
Components of hindbrain
Cerebellum
Medulla oblongata
Reticular Formation
Components of Midbrain
Inferior and superior colliculi
Components of Forebrain
Limbic system Basal ganglia cerebral cortex thalamus Hypothalamus
Thalamus function
relay station for sensory info
Hypothalamus function
Emotion, hunger, thirst
Maintain homeostasis
Basal ganglia function
Smoothens movements
Postural stability
Limbic System function
Controls emotions and memory
What behavior is acetylcholine responsible for
Voluntary muscle control
Parasympathetic nervous system
Attention
Alertness
What behavior is norepinephrine and epinephrine responsible for
Fight or Flight responses
Wakefulness
Alertness
What behavior is dopamine responsible for
Smooth movement
Postural stability
What behavior is serotonin responsible for
Mood
Sleep
Eating
Dreaming
What behavior is GABA responsible for
Brain Stabilization
What behavior are endorphins responsible for
Natural painkillers
What is nature vs. nurture
Nature: Genetics
Nurture: Environment
What is the role of the cochlea
Detects sound
What is the role of the utricle and saccule (in ear)
Detect linear acceleration
What is the role of the semicircular canals
Detect rotatonal acceleration
What is the auditory pathway
Cochlea
Vestibulocochlear nerve
Medial geniculate Nucleus of thalamus
Auditory cortex
What is bottom up processing
Data driven
Slower, less prone to mistakes
Recognition of objects by parallel processing and feature detection
What is top down processing
Conceptually driven
Faster, more prone to mistakes
Recognition of an object by memories and expectations with little attention to detail
What are gestalt principles
Way the brain can infer missing parts of an image when it is incomplete
What is Piaget responsible for
Cognitive development
What are the stages of cognitive development
Sensorimotor
Preoperational
Concrete Operational
Formal operational
Describe the Sensorimotor stage
Manipulating the environment to meet physical needs
Object permanence ends this stage
Describe the preoperational stage
Symbolic thinking
Inability to imagine what another person thinks or feels (egocentrism)
Describe the concrete operational stage
Understanding feelings of other and manipulating physical objects
Describe the formal operational stage
Abstract thought and problem solving
What is habituation
Becoming used to a stimulus
What is dishabituation
Second stimulus intervenes causing resensitization to original stimulus
What is observational learning
Learning a behavior by watching others
What is associative learning
Pairing together stimuli and responses or behavior and consequences
What is operant conditioning
Frequency of behavior is modified using reinforcement or punishment
What is positive reinforcement
Good stimulus is added in order to continue desired behavior
What is negative reinforcement
Bad stimulus removed in order to continue desired behavior
What is positive punishment
Bad stimulus added to decrease unwanted behavior
What is negative punishment
Good stimulus removed to decrease unwanted behavior
Describe drive reduction theory
Individuals acts to relieve internal states of tension
What is maslows hierarchy of needs highest to lowest
Physiological needs Safety and security Love and belonging Self esteem Self actualization
Describe the James Lange Theory
Following a stimulus the first response is nervous system arousal and second response is conscious emotion
Describe the canon bard theory
Following a stimulus the first response is nervous system arousal AND conscious emotion and the second response is an action
Describe the Schachter Singer theory
Following a stimulus the first response is nervous system arousal and cognitive appraisal and the second response is conscious emotion
What is a status
Position in society used to classify individuals
What are the three types of status
Ascribed: involuntarily assigned
Achieved: voluntarily earned
Master: Primary identity
What is a role
Set of beliefs, values, and norms that define the expectations of a certain status
What is a group
Two or more individuals with similar characteristics that share a sense of unity
What is a network
Observable patter of social relationships between individuals or groups
What is social faciliation
Tendency to perform at a different level when others are around
What is deindividualization
Loss of self awareness in large groups
Can lead to drastic behavior changes
What is the bystander effect
In a group individuals are less likely to respond to a person in need
What is peer pressure
Social influence placed on an individual by other individuals they consider equal
What is group polarization
Tendency towards making decisions in a group are more extreme than the thoughts of the individual group members
What is group think
Tendency to make decisions based on ideas and solutions that arise within group without considering outside ideas
What is assimilation
One culture begins to melt into another
What is multiculturalsim
Encouragement of multiple cultures within a community to enhance diversity
What is a subculture
Group that distinguishes itself from the primary culture to which it belongs
What is socialization
Process of developing and spreading norms, customs, and beliefs
What is a stigma
Extreme disapproval or dislike of a person based on perceived differences
What is the self fulfilling prophecy
Stereotype creating an expectation of a particular group which creates conditions that lead to a confirmation of this stereotype
Stereotype threat
Anxiety of confirming a negative stereotype
Prejudice
Irrationally based attitude prior to experience