nervous system

Question 1

are the cranial nerves and spinal roots part of the peripheral nervous system or the central nervous system?

Answer 1

all cranial nerves EXCEPT the optic nerve and spinal roots are part of the peripheral nervous system

Question 2

neurotransmitters

Answer 2

• chemicals that transmit signals from a neutron to an adjacent cell
• can stimulate or inhibit the target cell
• synaptic transmission is always unidirectional (one way only)

Question 3

synapse

Answer 3

calcium ions cause the synaptic vesicles to bind to the presynaptic membrane and release neurotransmitters into the synaptic cleft

Question 4

vomiting centre

Answer 4

located in the medulla

Question 5

sympathetic nervous system

Answer 5

sympathetic chain/thoracolumbar region 
T1-L2
mostly noradrenaline 
short pre-ganglionic 
long post-ganglionic

Question 6

parasympathetic nervous system

Answer 6

craniosacral region-cranial region (CN 3,7,9&10) and sacral region(S2-S4) meet at transverse colon

• mostly acetylcholine
• long pre-ganglionic
• short post-ganglionic

Question 7

craniosacral

Answer 7

boring parasympathetic

Question 8

thoracolumbar

Answer 8

exciting sympathetic

Question 9

peripheral neurotransmitters

Answer 9

acetylcholine

noradrenaline

Question 10

parasympathetic system

Answer 10

due to muscarinic activity -thus muscarinic antagonists are used when dealing with problems on the parasympathetic nervous system