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11.Sympathetic activity inhibits the secretion of ____________________ from the pancreas. 12.Sympathetic

Question : 11.Sympathetic activity inhibits the secretion of ____________________ from the pancreas. 12.Sympathetic : 1417072

 

11.Sympathetic activity inhibits the secretion of ____________________ from the pancreas.

12.Sympathetic activity stimulates the secretion of ____________________ from the pancreas.

13.Alpha and beta are two kinds of ____________________ receptors.

14.Binding of ____________________ to nicotinic receptors is always excitatory.

15.Binding of ____________________ to muscarinic receptors may initiate EPSPs or IPSPs.

16.The origin of the somatic nervous system is in the ____________________ horn of the spinal cord.

17.Depolarization of the motor end plate results from more ____________________ ions entering the cell than ____________________ ions leaving the cell.

18.An _______ binds with the receptor, preventing the neurotransmitter from binding and causing a response, whereas, an ______ binds to the neurotransmitter’s receptor and causes the same response as the neurotransmitter.

19.The ________ within the brain stem is the region most directly responsible for autonomic output.

20.Sympathetic __________ to a particular organ exists when the sympathetic stimulation of that organ increases above tone level.

SHORT ANSWER

Sequencing

1.Indicate the proper sequence of events at the neuromuscular junction by filling in the blank with the appropriate number from 2 through 7. Numbers 1 and 8 are already identified.

ACh is released from the axon terminal by exocytosis.

An EPP takes place, primarily as a result of Na+ influx.

8Acetylcholinesterase inactivates ACh, terminating activity at the neuromuscular junction.

1An action potential is propagated to an axon terminal of a motor neuron.

Channels that permit passage of Na+ and K+ are opened in the motor end plate.

Ca2+ channels are opened in the axon terminal.

Local current flow between the motor end plate and adjacent muscle-cell membrane initiates an action potential that spreads throughout the muscle fiber.

ACh binds with receptor sites on the motor end plate.

 

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