neuronal communication

Question 1

what are the reasons for communication systems?

Answer 1

to receive information (from internal + external environment), process information (make decisions based on the information received), respond (measured & appropriate)

Question 2

how does cell signalling work?

Answer 2

there is communication between cells by means of a chemical. signal molecules bind to complementary cell surface receptors and binding triggers a response within a cell

Question 3

what is the central nervous system (CNS) made of?

Answer 3

brain, spinal cord and nerves

Question 4

what is the peripheral nervous system (PNS) made of?

Answer 4

nerves

Question 5

what is the human nervous system made of?

Answer 5

CNS & PNS

Question 6

How is information passed along neurones?

Answer 6

through an action potential (nerve impulses)

Question 7

what are neurones?

Answer 7

specialised cells that transmit electrical impulses

Question 8

what are nerves?

Answer 8

a discrete bundle of several thousand neurone axons