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93 Cards in this Set

  • Front
  • Back

What us bio psych

Area of psychology that studies biological bases of behaviour

Why do we study bio psych

To understand how our body works and concubines to behavior including mental processes

What are the 4 foundation areas of bio psych

1) philosophy


2) experimental bio


3) darwins theory of natural selection and functionalism


4) experimental psych

What is philosophy

The study of the ultimate nature of existence, reality, knowledge and goodness as discoverable by human reasoning


What lead to the development of scientific method

-empiricism


-postivism


(Both schools of thought in philosophy)

What is empiricism

Knowledge comes from our senses (experience)

What is positivism

Our need to explain and predict should follow logic and inquiry


-research should be empirically observable


-testable statements should use principles of logic

What is the foundation of all sciences

Philosophy

Experimental psychology

Studying the mind using scientific methods


(Structuralism, Fuctionlism, behavoirism)

What did Wundt do

-Father of sttucturalism


-used introspection to study structures of the mind

What is introception

????

What was functionalism and who was important in its creation

-william James


-focused on the processed of the mind


-replaced strucuralism

What did functiinalists focus on

Emphasized the biological significance of mental processed in adaptation of an organism to the environment

What was behaviourism's idea of psychology

Psychology is an area that studied behaviour and and further reinforced the position of psychology as a science

What did experimental psych do

Provided the foudation of psychology as an scientific discipline, studiny heviour in a systematic way using the experimental method

Early psychologist

Weber and Frechner (psychophsics)


James (emtion)


Eddinghaus (memory)


Lashley and hebb (learning) w

What is the physiological explanation

Describes how activity of the brain and other organ systems relate to behavior

What is ontogenetic explanation

Describes how a structure or behavior develops


-takes account the interaction of genes with the environment in producing the final outcome

What is the evolutionary explanation

Describds how a structure or a beaviout evolved over the evolutionary history

What is thr functional explanation

Describes why a structor or behavior evolved as it did


-takes into account the adaptive significance of the structure or behavior

Why do we use animals is psych

Essential for learning more about the human and the animal condition

What are the two groups of the animal defense movement

Abolishinists


Minimalists

What do abolishinists want

Believe that non human animals should not be used for any reason for the benefit of humans

What are the 2 philosophical divisions in abolishinist movement

Utilitarian argument


Rights argument

What is thr utilitarian argument

Peter singer


-follows the principle of equality


-all creatures have the same stake to their existence

What is speciesism

Elevating our interest above other species

What is the rights argument

Regan and rollin


-based of the principle of rights


-inherent value


(To have rights one has to have inherent value)


(Animals do so they are entitled to fundamental rights)

What is inherent value

Value an animal has in itself independent if any use that it may have for others

What do minimalists (reformers) believe

That the use of non human animals in research may be permitted in a limited way


- believe in the cost benefit analysis

What is the cost benefit analysis

The benefits of the research to humans and non humans should outweigh the costs of using non human animals

What is the mind body problem

How the body relates to brain activity

What is monism

Idea that the universe consists of only 1 type of being

What is dualism

Mind is one type of substance and matter is another

What structures are in animal cells

Membrane


Nucleus


Mitochondria


Ribosomes

What is the membrane

Surface of the cell that seperates the inside of the cell from the outside environment

What is a nucleus

Contains chromosomes

What is a mitochondrion

Performs metabolic activities providing energy to the cell for activites


(Different genes from the ones in the nucleus)

What are ribosomes

Sites in the cell that synthesize new protein molecules

What is the smooth endoplasmic reticulum (er)

Network of thin tubes that transport newly synthesized proteins to other locations


-contributes ti segregation of protiens


What is rough endoplasmic reticulum (er)

Contiams ribosomes

What is lysosmes

Involved in the digestive process

What are microtubles

Serve as a matrix or framework and transport molecules in the cell

What are golgi apparatus

Form of smooth er made of membrains that are wrapped in products of sensory cells

What are 2 parts of the nervous system

Central nervour system


Peripheral nervous system

What cells is the nervous system made of

Neurons


Glai

What do neurons do

Receive information and transmit it to other cells

What do glai do

???

What do all neurons have

Soma


Dendrities


Axons


Presynaptic terminals

What is a soma

Body that contains the nucleus, ribosomes and mitochondria

What are dendrites

Branching fibers that get smaller near the end


-lined with synaptic receptors that receive information from other neurons

What is an axon

Thin fiber of constant diameter that convey impulses towards other neurons and organs and muscles

What are presynaptic terminals

At the end of axons. Act like a button

What is the myelin sheath

Insulating material that covers the axon


Has spaces called the nodes of Ranvier

What is an afferent axon

Bring information into a stucture

What is an efferent axon

Carries information away from a structure

What are multipolor neurons

Single axon


Many dendrites

What are bipolar neurons

Has 2 extentions


1 axon and dendrites on each side

Unipolar neurons

Has only 1 extension

What is a sensory neuron

One end is highly sensitive to a particular type of stimulation (touch, light, sound)

What is a motor neuron

Has it soma in the spinal cord


Conducts impulses along its axon to a muscle

What is an interneuron

A neuron that receives information from sensory neurons or interneurons and convey it to motor or interneurons

What are the different kinds of glai

Astroglia


Oligodendroglia


Microglia


Radial glia

What is Astrocytes

Star shapes that wrap around the synapses of functionally related axons


-shiled chemicals surrounding it


-helps synchronize closely related neurons allowing axons to send messages in waves

What are Oligodendroglia

Produce myelin sheaths that surround and insulate certain vertebrate axons in the central nevous system

What are microglia

Act as part of the immune system removing viruses and fungi from the brain

What is radial glia

Guide the migration of neurons and their axons and dendrites during embryonic development

What is the blood brain barrier

Mechanism that excludes most chemicals from the vertebrate brain


-cells are close together to block viruses


-blocks out useful chemicals as well


-glucose crossed in large amounts

What is active transport

Protein mediated processed that expends engery to pump chemicals from the blood into the brain

When at rest what does the membrane maintain

Electrical gradient (polarization)


What is polarization or electrical gradient

The difference in electrical charge between the inside and outside of a cell


-inside is more negative than outside


-negative charged proteins in the cell

What is resting potential

The difference in voltage in a cell and is the state of a neuron before it sends a nerve impulse


-measued by a microelectrode

What happens in a membrane when it is at rest

Sodium and potassium channels are closed


-no flow of sodium


-small flow of potassium

What is intracellular fluid

???

What is extacellular fluid

???

What factors are involved in resting potential

-distrubution of substances


-protiens


-potassium


-Chloride


-sodium

2 things involved in resting potential

Sodium potassium pump


Membrain permeability

What is selective permeability

Some chemicals pass through it more freely than others

What is sodium potassium pump

Protien complex that transports 3 sodium ions out of a cell and draws in 2 potassium ions


-is an active transport


-more sodium on outside than inside


-potassium is more concentrated in the inside than outside

What two factors push sodium into the cell

Electrical gradient (opposite charges attract)


Concentration gradient (difference in ion distribution) (more on outside so pushed inside)

What is action potential

Messages sent by axons

What is hyperpolarization

Increasing the polarization


The difference between the electrical charge of 2 places

What is depolarization (hypopolarization)

Reducing polarization towards 0

What is threshold of excitation

When reach threshold the membrane opens its sodium channels and let's sodium ions flow into the cell

What happens at the peek of action potential

Soduim channels do not open in any situation deactivated

What is the refractory period

Cell resists the production of future action potentials


-depends on sodium channels closed and potassium flowing out fast

What is absolute refractory peoird

First part when the membrane cant produce any action potential

What is relative refactory period

Stronger than normal stimulus is needed for action potential


-sodium channels are recovering

What is the all or none law

Amplitude and velocity of action potential are independent of the intensity of the stimulus that caused it

What is an unmyelinated nueron

-action potential propagation by being regenerated along each point of the axon

What is an myelinated neuron

-Propagation happens ranvier of nodes


(Creates resistance for electrical charge)


(Conserves energy and fast)

What is propagation of action potential

The transmission of action potential down an axon

What are local neurons

Only give information to their neighbours


-dont have axon so done follow all or none law

What is saltatory conduction

Jumping of action potentials from node to node