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18 Cards in this Set

  • Front
  • Back

There are three types of nervous system: What are they normally referred to as?

Central, Peripheral and Enteric Nervous System

The Peripheral nervous system contains cell bodies fro the brain and spinal cord?


True or false?

True

The enteric nervous system is usually considered as part of the P______ N_______ S_________ and the cells are considered as n______ of the viscera?


a) neuronal cells


b) neural afferent neurons


c) neural efferent neurons


d) nuclei

Peripheral Nervous System and neural cells of the viscera

How many pairs of peripheral nerves enter the brain and spinal cord?


a) 50


b) 47


c) 46


d 45


e) none of the above

e) 43 pairs of peripheral nerves enter and exit the brain and spinal cord

Nerves are bundles of individual neurone processes: they contain the following:


a) axons, dendrites, cell bodies and are mixed


b) axon, dendrites, either sensory or motor only and contain cell bodies


c) axon, no dendrite, no neuronal cell bodies and can be mixed


d) no axon, no dendrite, no neuronal cell bodies and can be mixed?

f) Peripheral nerves can be afferent or efferent. They are processes and therefore contain axons and do NOT contain dendrites. There are no neuronal cell bodies.

The peripheral nervous system is divided into three. identify them using the following descriptions


1) allows you to taste and feel for example


2) allows you to move or pick up a cup


3) allows you to have digestion

sensory, somatic and autonomic (visceral) nervous system.

Identify as many structures within the peripheral nerves.

Axon is wrapped into bundles. Surrounded by endoneurium, packed into fascicles by perineurium and enclosed into blood vessels by epineurium.

Schwaan cells myelinated the PNS. True or false

True. Schwann cells myelinated individual axons. They are present around all axons but only myelinated some.

How many pairs of cranial nerves are there in the brain?


1 and 2 are from the fore____


3-12 are from the brain______


80% of outflow comes from________

12 pairs


1 and 2 are from the forebrain


3-12 are from the brainstem


10 is the vagus nerve and this is responsible for 80% of PNS outflow.

Outline the spinal nerves

C1-C8


T1-T12


L1-L5


S1-S5


Coccygeal

Which statement is true?


a) Dermatomes are patterns of innervation


b) They are used to identify sites of damage


c) If someone has anal sensation, this most likely means they will not be able to walk again.



a and b are true


c = anal sensation means the patient is most likely able to walk again

the autonomic nervous system is divided into three sections. what are they?


s


p


e

sympathetic - flight or flight


parasympathetic - rest and digest system. conserves energy


enteric

Which of the two processes uses a relay connection?


a) Somatic


b) Autonomic

b? Autonomic - here, the motor axons connect at synapses with another cell in a ganglion.



Pre-ganglionic axons are not myelinated.


True or false


False. Pre-ganglionic cells are myelinated and also use Ach neurotransmitter. They are the neutrons from the CNS to the ganglia. They are shorter than the post-ganglionic axons.

Complete the sentence.


Sympathetic ganglia lie ______ to the spinal cord whilst parasympathetic ganglia lie ______ close to targets

close for both

Both sympathetic and parasympathetic pre-ganglion cells use which neurotransmitter?


a) Ach


b) Norepinephrine


c) Epinephrine

a

Which receptor does Ach work on?

N2 receptor

Sympathetic post ganglionic cells are a____rgic whist parasympathetic ganglionic cells are c_______rgic.

adrenergic


cholinergic