2. Neurons

Question 1

Three things that the nervous system work to achieve?

Answer 1

1. communication - with other organs
2. integration - work together to achieve the same thing
3. co-ordination - working at different times to achieve the same thing

Question 2

what does the peripheral nervous system consist of?

Answer 2

consist of all the nerves attached to the central nervous system (cranial and spinal)

Question 3

what are afferent nerves?

Answer 3

they are sensory neurons which carry messages towards the CNS
contains the somatic and visceral centres

Question 4

what are efferent nerves?

Answer 4

motor neurons which carry messages away from the central nervous system
contains the
- automatic (sympathetic and parasympathetic) and somatic nervous systems

Question 5

what are neurons?

Answer 5

they are the basic structural unit of the nervous system

Question 6

what are connector neurons?

Answer 6

connect neurons together

Question 7

can nerve impulses travel in different directions?

Answer 7

no, they can only travel in one direction.

Question 8

how do the travel though the body?

Answer 8

nerve impulses travel from dendrites t the cell body, and then from the cell body to the axon