called 23. The neurotransmitter that excites skeletal muscle but inhibits cardia
ID: 3515870 • Letter: C
Question
called 23. The neurotransmitter that excites skeletal muscle but inhibits cardiac muscle is A. Norepinephrine B. Dopamine C. Histamine D. Acetylcholine E. ?-endorphin 24. Clusters of cell bodies outside the CNS are called A. Ganglia B. Receptors C. G yrus D. Central Canal E. adrenergic 25. How is an excitatory cholinergic synapse different from an adrenergic synapse? A. cholinergic involves norepinephrine where adrenergic involves acetylcholine B. cholinergic involves the neurotransmitter directly stimulating ligand-gated channels to open where adrenergic involves a secondary messenger opening ligand-gated channels C. adrenergic involves the neurotransmitter directly stimulating ligand-gated channels to open where cholinergic involves a secondary messenger opening ligand-gated channels D. cholinergic is excitatory where adrenergic is inhibitory E. both involve cAMP as a secondary messenger, but adrenergic is slower 26. Motor neurons exit the spinal cord through the to connect the the PNS A. posterior root B. ventral root C. lateral hor D. central canal 27. Each spinal nerve receives sensory input from a specific area of skin called A. Dorsal root B. Pia Mater C. Dermatome D. Lateral columns 28. Parasympathetic nerves travel mainly through spinal nerves to reach their target tissue.C A. True B. False 29. Connective tissue surrounding an individual axon within a nerve is A. Epineurium B. Perineurium C. Endoneurium D. Dura Mater E) Pia Mater 30. IPSPs (inhibitory postsynaptic potentials) are local depolarizations B) are local hyperpolarizations meahility to sodium ions.Explanation / Answer
23. Acetylcholine. This happens because of difference in receptirs at two sites. The receptor at akeletal mucles is excitatory and cardiac muscles is inhibitory.
24. Clusters of cell bodies outside CNS is called a ganglia.
25. Cholinergic involves the neuro transmitter directly stimulating ligand gated channel to open where adrenergic involve a secondary messenger opening ligand gated channel.
Acetylcholine directly opens Na channels where as adrenergic system involves CAMP.
26. Ventral root.
The dorsal root consist of sensory and motor is present in ventral root.
27. Dermatone. It is the areas of skin supplied by a single spinal route.
28. False. Parasympathetic system involves lower parts of brain and cerebrum and some lower segments of spinal cord only.
29. Endoneurium. Individual axon fibre is surrounded by endoneurium and a group of them is further surrounded by perineurium.
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