biological Flashcards
What is an assumption of the biological approach?
Everything psychological is at first biological, to fully understand behaviour we must look at biological structures
What is neurochemistry
The actuon of chemicals in the brain
What are twin studies used to investigate
Whether certain psychiological characteristics are genetic
What are concordance rates
The extent to which twins share the same characteristics
What percentage of genes do monozygotic twins and dyzygotic twins share
Monozygotic-100%
Dizygotic-50%
What is a genotype
genetic make-up
Define phenotype
The way that a persons genes are expressed through physical,behavioural and psycholohical characteristics
Define evolution
The changes in inherited characteristics in a biological population over successive generations
What systems is the PNS divided into
ANS-governs vital functions e.g heart rate
SNS-governs muscle movement and recieves information from sensory receptors
What is the parasympathetic nervous system
The bodys normal resting state
‘rest and digest’
What is the sympathetic nervous system
‘Fight or Flight’
What do sensory neurons do and where are they located?
They carry messages from PNS to CNS
What do Relay neurons do?
They connect sensory neurons to the motor or other relay neurons.
What do motor neurons do?
Connect the CNS to effectors
Which neuron has a soma thats raised from the axon?
Sensory neurons
