part of first psych sac 2

Question 1

role of dopamine

Answer 1

neurons in the substantia nigra produce the neurotransmitter dopamine, so when the substantia nigra is diseased, the amount of dopamine available to reduced. dopamine carries messages that allow smooth coordinated function of the body muscles and movements, therefore a reduced amount of dopamine makes it hard for the body to have motor movement

Question 2

parkinson’s disease

Answer 2

chronic, degenerative central nervous disorder characterized by fine muscle tremors, rigidity, and speech problems

Question 3

neural communication

Answer 3

electrochemical process - uses both electrical and chemical energy

Question 4

lock and key process

Answer 4

Each neurotransmitter has a chemically distinct shape (key). A neurotransmitter’s shape must precisely match the shape of the receptor site (lock) on the postsynaptic neuron’s dendrites in order to bind to its receptors and restart the neural impulse.