Approaches(biological approach) Flashcards
Genotype -
The genetic code that is made up of DNA of an individual cells. This information is usually passed on as heredity information.
Phenotype -
Is the observable characteristics that occur with the physical appearance, this is a consequence of the genotype interacting with the environment.
Genes and the influence of behaviour -
Heredity is the passing down of characteristics from one generation to the next, and the offspring take after their children, these genes carry instructions for characteristics.
Biological structures on the brain - Nervous system
- CNS composes of the brain and spinal cord.
- PNS composes of the brain and autonomic nervous system.
Neurons -
The NS carries information from one part of the body to another, neurons transmit nerve impulses as a form of electrical signals. Many of these aspects are under neuronal control.
Brain -
Largest part of the brain is the cerebrum, the cerebrum is divided into hemispheres (halves) with each further hemisphere divided into 4 lobes.
Frontal lobe -
Functions of speech, thought and learning.
Temporal lobe -
Memory and hearing
Parietal lobe -
Process of sensory information of touch, temperature and pain.
Occipital lobes -
Process visual information.
neurotransmitters -
when a nerve impulse reaches the end of one neuron, chemical messenger is released. this is called a neurotransmitter. Travels from one neuron to the next over a synapse.
Neurotransmitter types - (Excitatory)
There are multiple neurotransmitter types, these neurotransmitter, those that trigger the receiving neuron from the nerve impulse and stimulate the brain into action are called excitatory neurotransmitters. E.g dopamine
Neurotransmitter types - (Inhibitory)
Those that inhibit the nerve impulse in order to calm the brain and balance the mood are called inhibitory neurotransmitters. E.g Serotonin
