Shared Flashcard Set

Details

Biological and Evolutionary
CBC 100
79
Psychology
Intermediate
07/14/2016

Additional Psychology Flashcards

 


 

Cards

Term
Darwin's Definition of evolution
Definition
Descent with modification
Term
Biological Evolution
Definition
A Change in the gene frequency of a population over time
Term
Gene
Definition
A segment of DNA molecule containing the code for a specific kind of protein molecule
Term
Gene Frequency
Definition
Numeric indicator of the genetic make up of a population
Term
Population
Definition
A community of individuals, of the same species, where mates are commonly found
Term
Genotype
Definition
The Genes found at a particular locus or the complete genetic makeup of an organism
Term
Phenotype
Definition
The observed or measurable characteristics of an organism. Is the results of a complex interaction between the environment and the genotype
Term
Mutations
Definition
Alterations in the genetic material
Term
Genetic Drift
Definition
Fluctuations in allele frequencies due to chance
Term
Migration
Definition
Exchange of genes between populations
Term
Forces of Evolution
Definition
Mutation, Genetic Drift, Migration, Non-random Mating, Natural Selection
Term
Non-Random Mating
Definition
Mating among individuals on the basis of their phenotypic or genotypic similarities or differences rather than mating randomly
Term
Natural Selection
Definition
Differential fertility and mortality of variants within a population. Directional force and the strongest force in evolution.
Term
Microevolution
Definition
Small changes occurring within a species, such as a change in gene frequency
Term
Macroevolution
Definition
Large scale evolution that occur over many generations that produce new species.
Term
Adaptation
Definition
Modifications to meet the changed life circumstances.
Term
Forms of Adaptation
Definition
Biological, Physiological, Behavioral(Cultural)
Term
Neurons
Definition
nerve cells that makeup the basic building blocks of the nervous system
Term
Afferent
Definition
a neuron that brings information into a structure (sensory neuron)
Term
Efferent
Definition
the nerons and nerves that transmit motor information either from the brain through the spinal cord to muscles or directly from the spinal cords to the muscles
Term
Sensory Neuron
Definition
carry information from sensory organ to CNS
Term
Interneurons
Definition
exist entirely within the CNS and carry messages from one set of neurons to another
Term
Motor Neurons
Definition
carry messages out from CNS through nerves to operate muscles and glands
Term
Action Potential
Definition
neural impluses; the all or nothing electrical bursts that begin at one end of the axon of a neuron and move along the axon to the other end
Term
Neurotransmitter
Definition
a chemical substance released from the axon terminal of a neuron, at a synapse, that influences the activity of another neuron,muscle cell, or a glandular cell
Term
Glial cells
Definition
  • majority of cells within CNS
  • help keep neurons in place
  • some assist in forming myelin sheath
  • nourish neurons
  • destroy and eliminate neurons that have died
Term
Nerves
Definition
bundles of axons that are routed togehter in peripheral nervous system
Term
Skeletal muscles
Definition
muscles that are attached to bones and produce externally observable movements of the body when contracted
Term
Visceral muscles
Definition
are internal muscular structures that do not move skeleton (heart , arteries, gastointestinal tract)
Term
Central Nervous System (CNS)
Definition
  • spinal
  • brain- hindbrain,midbrain,forebrain
Term
Stress
Definition

a phenomenon in which some factor (or factors) in the environment causes a person to fell threatened or challenged in some way

cumalitive in the build up of small stress

Term
Stressors
Definition
a situation or event that leads to stress
Term
Stress Response
Definition
a reaction to some kind of stressor, involving internal and exsternal adaptaton by an individual
Term

Phases of Gas

(General Adaptation Syndrome)

Definition
  • Alarm
  • Resistance
  • Exhaustion
  • Primary Appraisal
  • Secondary Appraisal
Term
Alarm
Definition
body immediately aroused and sympathetic system triggers release of hormones from adrenal glands
Term
Resistance
Definition
alarm phase cannot continue indefinitely, counterbalance by Parasympathetic system
Term
Exhaustion
Definition
body's reserves exhausted and ability to restore damaged or worn out tissues diminished
Term
Primary appraisal
Definition
involves determining whether it is important even to address a stressful situation, base on its significance and the possible outcomes of dealing or not dealing with the situation
Term
Secondary appraisal
Definition
involves assessing strategies for making a beneficial outcome more likely and a harmful outcome less likely
Term
Type A behavior pattern
Definition
  • characterized by competetive orientation toward achievement
  • a sense of urgency about time
  • strong tendency to fell anger and hostility
Term
Type B behavior pattern
Definition
characterized by relatively low levels of competitiveness, urgency about time and hostility
Term
Tract
Definition
any bundle of axons cousing together witin the CNS
Term
Ascending tract
Definition
carry somatosensory information from spinal nerves up to the brain
Term
Descending tract
Definition
carry motor control information from brain to be transmitted out spinal nerves to muscles
Term
Spinal Cord Functions
Definition
  • carries messages upward and downward between spinal nerves and brain
  • generates thythmic components of locomotion
  • organizes certain relexes, such as flexion reflex
Term
CT scans
Definition
beam of X-rays takes pictures of narrow slices of the brain
Term
PET scans
Definition
measures brain activity, including metabolism, blood flow, and neurotransmitter activity
Term
MRI
Definition

used to study brain structure and activity

FMRI- allows for studying brain function as people perform various tasks

Term

PET

(Position Emission tomography)

Definition
Term
Brain
Definition
  • hindbrain
  • midbrain
  • forebrain
Term
Hindbrain
Definition

brain stem

medulla

pons

cerebellum

Term
Cerebellum
Definition

helps initiate and control rapid movements of the limbs,

receives and integrates information from all senses

Term
Basal Ganglia
Definition
  • involved in slower, more deliberate movements
  • movement control functions that compliment those of the cerbellum
Term
Hindbrain
Definition
  • pons
  • cerebellum
  • medulla
Term
Pons
Definition
carries nerve impulses form higher to lower parts of nervous system
Term
Cerebellum
Definition
concerned with muscular movement, learning/memory
Term
Medulla
Definition
plays role in vital body functions such as heart rate and breathing
Term
Midbrain -structures
Definition
reticular formation
Term
Reticular Formation
Definition

involved in brain arousal, sleep, and attention

ascending- sends information to and alerts higher brain regions

descending-higher brain centers can admit or block sensory input

Term
Forebrain
Definition
  • thalamus
  • cerbral cortex
  • limbic system
  • corpus callosum
Term
Thalamus
Definition
routes sensory information to higher brain structures
Term
Hypothalamus
Definition
  • major role in motivation and emotions
  • connects with the endocrine system
  • involved in pain/pleasure
Term
Limbic system
Definition
  • helps to coordinate behaviors needed to satisfy motivational and emotional urges arising in the hypothalamus
  • also involved in memory
Term
Cerebral Cortex
Definition
  • two hemispheres (right and left)
  • each hemisphere divided into four lobes
  1. Frontal
  2. Occipital
  3. Parietal
  4. Temporal
Term
Functional categories of cortex areas
Definition
  • primary sensory areas
  • primary motor areas
  • association areas
Term
Primary Sensory Areas
Definition
  • Occipital lobe:Vision
  • Temporal Lobe : auditory
  • Parietal lobe: somatosensory
Term
Primary motor area
Definition
rear of frontal lobe
Term
Association areas
Definition
  • receive input from sensory areas and lower parts of the brain and are involved in the complex processes called perceptions, thought and decision making
  • dramatically larger in humand than other areas
Term
Corpus Callosum
Definition
a massive bundle of axons connecting the right and left hemispheres of the higher parts of the barin,including the cerebral cortex
Term
Contralateral connections
Definition
neural pathways from the sensory and motor areas and parts of the body that are cross-connected
Term
Aphasia
Definition
any loss in language ability due to brain damage
Term
Broca's Aphasia
Definition
a specific syndrome of loss in language ability that is due to damage in the Broca's area of the brain. It is characterized by language in which the meaning is usually clear but small words and word endings that serve grammatical purposes are missing; also called nonfluent aphasia
Term
Wernicke's Aphasia
Definition
specific syndrome of lossof language ability that occurs due to damage to Wernicke's area of the brain. Speech typically retains its grammatical structure, but loses its meaning due to the speaker's inability to provide meaningful content words (nouns,verbs,adjectives,adverbs)
Term
Endocrine System
Definition
  • consists of numerous glands throughout the body
  • secretes hormones into the blood stream
  • interacts with the immune system
Term
Hormone
Definition
any chemical substance that is secreted naturally by the body into the blood and can influence physiological processes at specific target tissues (like the brain) and thereby influence behavior
Term
Basic kinds of Hormones
Definition

Peptide: short chain proteins interact with cell membrane

Steroids: chemically related to cholesterol interact inside cell

Term
split-brain
Definition
Term
Dendrites
Definition
attach to the cell body
Term
Axon
Definition

tube tail

 

look up more

Supporting users have an ad free experience!