a) Which of the following statements about the autonomic nervous system is INCORRECT?
A The preganglionic fibres in the parasympathetic division are usually long compared to the postganglionic fibres
B The sympathetic division mediates responses that allow the body to respond to âflight and frightâ situations
C The ganglia of the sympathetic division are usually close to the spinal cord
b) Glutamate is an example of an excitatory amino acid neurotransmitter that acts via direct synaptic transmission when it is released from presynaptic neurons in the brain
Based on the background information, which of the following is a CORRECT statement regarding events at the synaptic cleft after glutamate is released?
A Glutamate acts by stimulation of receptors on the presynaptic neuron
B The postsynaptic glutamate receptors are in the family of tyrosine-kinase linked receptors
C On the postsynaptic membrane, glutamate activates ligand-gated sodium channels, which are an example of ion-channel linked receptors
D The events at this synapse are an example of electrical transmission
E The pathway of receptor activation includes activation of a signal transduction pathway and production of second messengers
D The adrenal medulla is a sympathetic ganglion
E The parasympathetic nerves arise from the brain stem and the sacral region of the spinal cord
a) Which of the following statements about the autonomic nervous system is INCORRECT?
A The preganglionic fibres in the parasympathetic division are usually long compared to the postganglionic fibres
B The sympathetic division mediates responses that allow the body to respond to âflight and frightâ situations
C The ganglia of the sympathetic division are usually close to the spinal cord
b) Glutamate is an example of an excitatory amino acid neurotransmitter that acts via direct synaptic transmission when it is released from presynaptic neurons in the brain
Based on the background information, which of the following is a CORRECT statement regarding events at the synaptic cleft after glutamate is released?
A Glutamate acts by stimulation of receptors on the presynaptic neuron
B The postsynaptic glutamate receptors are in the family of tyrosine-kinase linked receptors
C On the postsynaptic membrane, glutamate activates ligand-gated sodium channels, which are an example of ion-channel linked receptors
D The events at this synapse are an example of electrical transmission
E The pathway of receptor activation includes activation of a signal transduction pathway and production of second messengers
D The adrenal medulla is a sympathetic ganglion
E The parasympathetic nerves arise from the brain stem and the sacral region of the spinal cord
Related textbook solutions
Related questions
1- Which of the following is true about the Autonomic Nervous System?
| The sympathetic division has relatively short postganglionic axons | ||||||||||||||
| The parasympathetic division has relatively long postganglionic axons | ||||||||||||||
| The ganglia in the sympathetic division are close to the spinal cord and distant from the visceral effectors | ||||||||||||||
| Most parasympathetic responses have a widespread effect upon the body 2-Which division of the nervous system has fibers of the thoracic splanchnic nerve that pass directly to the adrenal medulla (no postganglionic fibers)and upon stimulation secrete norephinephrine and epinephrine into the blood?
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