Neurophysiology

Question 1

concerning ion-gated channels, which of the following statements is false?

Answer 1

the ligand gated Cl- ion channels are activated by glutamate

Question 2

ionotropic receptors

Answer 2

include for example the nicotinic receptor

Question 3

which ion controls the membrane potential?

Answer 3

sodium

Question 4

which of the following statements about the autonomic nervous system is false?

Answer 4

both the pre- and post-ganglionic fibres are non-myelinated

Question 5

stimulation of b2-adrenoreceptors

Answer 5

dilates bronchiolar smooth muscle

Question 6

which of these can enter the membrane without the use of a transport protein?

Answer 6

small, lipophilic, non-ionic

Question 7

which is not part of basal ganglia?

Answer 7

midbrain

Question 8

which of the following about acetylcholine is correct?

Answer 8

enzyme that terminates ACh found in synapse

Question 9

the connective tissue sheath around the peripheral nerve is called the:

Answer 9

epineurium

Question 10

left cardiac sympathetic nerve stimulates

Answer 10

ventricular contraction

Question 11

skeletal muscle is under what control?

Answer 11

voluntary control

Question 12

what is the structure of the nerve in the somatic nervous system?

Answer 12

myelinated, single neuron

Question 13

What does stimulation of B1 receptor cause?

Answer 13

Increased heart rate

Question 14

How is acetylcholine associated with the parasympathetic nervous system?

Answer 14

neurotransmitter at the pre- and post- ganglionic receptors

Question 15

How is noradrenaline associated with the sympathetic nervous system?

Answer 15

The neurotransmitter at the post- ganglionic receptors

Question 16

What is true?

Answer 16

Acetylcholine works on nicotinic receptor

Question 17

What best describes the neuromuscular junction?

Answer 17

The junction between a motor neuron and the the muscle it innervates

Question 18

What is a feature of specialised channel proteins?

Answer 18

all of the above

Question 19

which statement is correct?

Answer 19

GABA-A receptors hyperpolarise the neuronal membrane by opening Cl- channels

Question 20

Which neurotransmitter opens ligand-gated chloride ion channels?

Answer 20

GABA

Question 21

Which is not a second messenger?

Answer 21

adenyl cyclase

Question 22

what does stimulation of beta 2 adrenoreceptors cause

Answer 22

dilation of bronchiole smooth muscle

Question 23

what inhibits respiration?

Answer 23

Hering Breuer

Question 24

which cortex is affected if the patient shows abnormal perseverance?

Answer 24

dorsolateral cortex

Question 25

what does the paroting gland go via?

Answer 25

otic ganglion

Question 26

what surrounds the capillaries in the blood brain barrier?

Answer 26

astrocytes foot processes, pericyte, brain microvascular endothelial cell