Question 1
Question
What is important about the lateral horn in relation to motor function?
Answer
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It is the part of the spinal cord where motor output originates from the autonomic nervous system
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It carries ascending signals to the brain
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It is the part of the spinal cord where sensory input travels from the periphery to the motor cortex
Question 2
Question
What is the joining of the sensory and motor fibres called (shown by the green circle)?
Answer
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Spinal nerve
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Hybrid nerve
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Hybrid root
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Dorsal root ganglion
Question 3
Question
The spinal cord exists between which spinal levels?
Answer
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C1 to L2
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C2 to L1
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C2 to S5
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C1 to S5
Question 4
Question
How many spinal nerves are there in total?
Question 5
Question
How many cervical spinal nerves are there?
Question 6
Question
How many thoracic spinal nerves are there?
Question 7
Question
How many lumbar spinal nerves are there?
Question 8
Question
How many sacral spinal nerves are there?
Question 9
Question
How many coccygeal spinal nerves are there?
Question 10
Question
The cervical plexus is composed of what spinal nerves?
Question 11
Question
The brachial plexus is composed of what spinal nerves?
Question 12
Question
The lumbar plexus is composed of what spinal nerves?
Question 13
Question
The sacral plexus is composed of what spinal nerves?
Question 14
Question
A dermatome is what?
Answer
-
An area of skin with single spinal nerve innervation
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An area of muscle with single spinal nerve innervation
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An area of muscle with dual spinal nerve innervation
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An area of skin with dual spinal nerve innervation
Question 15
Question
A myotome is what?
Answer
-
An area of skin with single spinal nerve innervation
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An area of skin with dual spinal nerve innervation
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An area of muscle with single spinal nerve innervation
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An area of muscle with dual spinal nerve innervation
Question 16
Question
Chickenpox may reactivate as shingles and effect particular spinal nerves, causing a rash that maps to a particular area of skin that the relevant nerve innervates (dermatome).
Question 17
Question
What does the red question mark show?
Answer
-
Central sulcus
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Lateral sulcus
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Occipital sulcus
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Post-central gyrus
Question 18
Question
What does the purple question mark show?
Answer
-
Central sulcus
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Lateral sulcus
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Parieto-occipital sulcus
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Longitudinal fissure
Question 19
Question
What does the orange question mark show?
Answer
-
Parieto-occipital sulcus
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Lateral sulcus
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Posterior sulcus
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Longitudinal fissure
Question 20
Question
What is the most common neurotransmitter found at post-ganglionic neurones of the sympathetic nervous system?
Answer
-
Noradrenaline
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Acetylcholine
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Glutamate
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Vasopressin
Question 21
Question
What is the most common neurotransmitter found at post-ganglionic neurones of the parasympathetic nervous system?
Answer
-
Glutamate
-
Acetylcholine
-
Noradrenaline
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Adrenaline
Question 22
Question
Stimulation of the gastrointestinal tract by parasympathetic nerve fibres helps to increase gut motility.
Question 23
Question
What routes can a pre-ganglionic sympathetic neuron take?
Answer
-
Travel through the white ramus communicans and ascend the sympathetic chain where it will synapse in the sympathetic ganglion at a higher level
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Travel through the white ramus communicans and descend the sympathetic chain where it will synapse in the sympathetic ganglion at a lower level
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Travel through the white ramus communicans and synapse in the sympathetic ganglion at the same level
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Travel through the white ramus communicans and pass through the sympathetic ganglion without synapsing
Question 24
Question
Most organs are dual innervated by both the parasympathetic and sympathetic nervous systems. They always have antagonistic effects to one another.
Question 25
Question
In some organs that are innervated exclusively by the sympathetic or parasympathetic nervous system, how is autonomic activity regulated?
Question 26
Question
What is meant by diffuse neurotransmission? Where does it occur?
Answer
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Somatic nervous system
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Autonomic nervous system
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A single neuron branches into many varicosities which contain neurotransmitter that can be released to co-ordinate widespread effects
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A single neuron releases neurotransmitter that causes an effect in one particular target
Question 27
Question
Sympathetic activity causes vasoconstriction in skeletal muscle blood vessels.
Question 28
Question
Post-ganglionic neurons that innervate sweat glands, part of the sympathetic nervous system, release Noradrenaline to stimulate sweat glands.
Question 29
Question
The SNS and PNS have an antagonistic effect on the same muscle which causes pupillary dilation and constriction respectively.
Question 30
Question
What receptors does Ach act at?
Answer
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Muscarinic
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Nicotinic
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Adrenergic
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Monoaminergic
Question 31
Question
What receptor does noradrenaline act at?
Answer
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Nicotinic
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Muscarinic
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Adrenergic
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Monoaminergic
Question 32
Question
Name the agonists of muscarinic receptors
Answer
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Pilocarpine
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Ach
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Bethanechol
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Atropine
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Hyoscine
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Tropicamide
Question 33
Question
Name the competitive antagonists of muscarinic receptors
Answer
-
Atropine
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Hyoscine
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Tropicamide
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Ach
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Pilocarpine
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Bethanechol
Question 34
Question
Name a non-competitive antagonist at nicotinic receptors
Answer
-
Hexamethonium
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Pilocarpine
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Atropine
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Aliskiren
Question 35
Question
Noradrenaline binding at alpha adrenoreceptors causes vasoconstriction.
Question 36
Question
The heart contains beta 1 adrenoreceptors. What effect does the sympathetic nervous system produce in the heart?
Answer
-
Increased heart rate
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Increased contractility
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Decreased heart rate
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Decreased contractility
Question 37
Question
The lungs contains beta 2 adrenoreceptors. What effect does the sympathetic nervous system produce in the lung?
Answer
-
Bronchodilation
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Bronchoconstriction
Question 38
Question
Blood vessels may contain beta 2 adrenoreceptors. What effect does the sympathetic nervous system produce in the blood vessels?
Answer
-
Vasodilation
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Vasoconstriction
Question 39
Question
The bladder contains beta 3 adrenoreceptors. What effect does the sympathetic nervous system produce in the bladder?
Question 40
Question
What myenteric plexus is found between which two layers of the gastrointestinal tract?
Answer
-
Mucosa
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Circular muscle
-
Longitudinal muscle
Question 41
Question
What submucosal plexus is found between which two layers of the gastrointestinal tract?
Answer
-
Mucosa
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Circular muscle
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Longitudinal muscle
Question 42
Question
The myenteric plexus is the co-ordinator of muscular reflexes such as peristalsis.
Question 43
Question
What excitatory neurotransmitters help to contract the gut in peristalsis (green question mark)?
Answer
-
Substance P
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Ach
-
NO
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VIP
-
ATP
Question 44
Question
What inhibitory neurotransmitters help to relax the gut in peristalsis (red question mark)?
Answer
-
Substance P
-
Ach
-
VIP
-
NO
-
ATP
Question 45
Question
The submucosal plexus co-ordinates secretory enzyme and acid release in response to...
Answer
-
Mechanical distension
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Chemical detection
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Pressure detection
Question 46
Question
The CNS can influence the ENS.
Question 47
Question
The myenteric plexus releases vasoactive substances.