Neurophysiology Flashcards
concerning ion-gated channels, which of the following statements is false?
the ligand gated Cl- ion channels are activated by glutamate
ionotropic receptors
include for example the nicotinic receptor
which ion controls the membrane potential?
sodium
which of the following statements about the autonomic nervous system is false?
both the pre- and post-ganglionic fibres are non-myelinated
stimulation of b2-adrenoreceptors
dilates bronchiolar smooth muscle
which of these can enter the membrane without the use of a transport protein?
small, lipophilic, non-ionic
which is not part of basal ganglia?
midbrain
which of the following about acetylcholine is correct?
enzyme that terminates ACh found in synapse
the connective tissue sheath around the peripheral nerve is called the:
epineurium
left cardiac sympathetic nerve stimulates
ventricular contraction
skeletal muscle is under what control?
voluntary control
what is the structure of the nerve in the somatic nervous system?
myelinated, single neuron
What does stimulation of B1 receptor cause?
Increased heart rate
How is acetylcholine associated with the parasympathetic nervous system?
neurotransmitter at the pre- and post- ganglionic receptors
How is noradrenaline associated with the sympathetic nervous system?
The neurotransmitter at the post- ganglionic receptors
What is true?
Acetylcholine works on nicotinic receptor
What best describes the neuromuscular junction?
The junction between a motor neuron and the the muscle it innervates
What is a feature of specialised channel proteins?
all of the above
which statement is correct?
GABA-A receptors hyperpolarise the neuronal membrane by opening Cl- channels
Which neurotransmitter opens ligand-gated chloride ion channels?
GABA
Which is not a second messenger?
adenyl cyclase
what does stimulation of beta 2 adrenoreceptors cause
dilation of bronchiole smooth muscle
what inhibits respiration?
Hering Breuer
which cortex is affected if the patient shows abnormal perseverance?
dorsolateral cortex
what does the paroting gland go via?
otic ganglion
what surrounds the capillaries in the blood brain barrier?
astrocytes foot processes, pericyte, brain microvascular endothelial cell
