Biopsychology

Question 1

What’s the role of the somatic nervous system?

Answer 1

carry information from the outside world to the brain & provide muscle responses via motor pathways

Question 2

What’s the role of the autonomic nervous system?

Answer 2

role in homeostasis, only consists of motor pathways, contains 2 components, the sympathetic nervous system and the parasympathetic nervous system

Question 3

What’s the role of the sympathetic nervous system?

Answer 3

involved in responses that prepare the body for fight or flight

Question 4

What’s the role of the parasympathetic nervous system?

Answer 4

relax the body and return to normal resting state (decrease heartrate)

Question 5

describe the pathway for the nervous system

Answer 5

-sensory neurons found in receptors such as the eyes

-sensory neurons carry nerve impulses to the spinal cord and brain

-once they have reached the brain, they are turned into sensations (vision hearing etc)
(not all sensory neurons reach the brain and stop at the spinal cord, allowing quick reflexes

-impulse then carried to the motor neuron (found in the CNS) when the motor neuron is triggered, neurotransmitters released to receptors on muscles

Question 6

what are dendrites?

Answer 6

receive signals from other neurons

Question 7

what’s the role of an axon?

Answer 7

carries action potential away from the cell body towards axon terminals

Question 8

what’s the role of myelin sheath?

Answer 8

insulates the axon so the electrical impulse travels faster

Question 9

what’s the role of the pre-synaptic terminal?

Answer 9

connects neurons to other neurons