Biological approach definition

the central nervous system is made up of the brain and the spinal cord. the nerve cells (neuron) in the body sends out impulse information through the spinal cord to the brain. the brain processes the information and sends it to the body through the spinal cord. 

Neurotransmitters: they are chemical messangers that transfer signal to the neurons which are picked up by the receptor sites.

Genes are made up of the DNA that is responsibe for protein synthesis and influence development. the DNA is in the chromosome and we inherit 23 chromosome from each parent. the chromosomes carry behavioural traits that cqan influence behaviour. All humans share genetic traits which is responsible for shared behaviour. the nature and nurture debate also influence behaviour.

Nature debate: genes affect our behaviour

Nuture debate: environment affect our behaviour

the sex of an individual is determined by the X and Y chromosome. the male sperm carry the XY chromosome and the female egg carry the XX chromosome. If the sperm has the X chromosome then the foetus would be female but if the sperm carries the Y chromosome then the Foetus would be male. around 6 weeks old the hormones are released and cause the foetus to develop testes and if no hormone is released then the foetus would develop ovaries. around 3 months hormones are released and the male sex organs develop if no hormones are released then the female sex organs develop.

at puberty stage the testosterone are released and the male produce sperm and hairs and in females the oestrogene is released and they develop breasts and fatty tissues around the hip.

brain lateralisation is the extent to which the left and right hemisphere of the brain take part in our activities. the right