Exam 10: Autonomic and Somatic Nervous Systems

Holly just got into a car accident and was T-boned by another driver. Luckily, both drivers escaped with no major injuries and Holly was able to exit her car safely to walk to the side of the road and sit down. When the EMT's arrive, what signs of autonomic nervous system stimulation might they look for in Holly?

Coronary blood vessels will dilate due to (increased/decreased) stimulation of the sympathetic nervous system and will constrict due to (increased/decreased) stimulation of the parasympathetic system.

In the autonomic motor pathways, the motor neuron whose axon extends to the effector is known as the ______ motor neuron.

Postganglionic neurons of the parasympathetic nervous system primarily secrete acetylcholine, while postganglionic neurons of the sympathetic nervous system primarily secrete norepinephrine.

Madison decides to go outside and break her personal record for total distance ran in an hour. When she finishes her run (and breaks her record) she notices that she is hardly sweating at all. Which of the following explanations identifies what might be wrong with her physiology (in this instance only)?

Which of the following is (are) main branches of the autonomic nervous system?

If the frequency of action potentials in a somatic motor neuron increased, would there be any effect on the activity of the muscle innervated by the motor neuron?

During an asthma attack, a patient may experience a bronchospasm, or tightening of the muscles around the airways, in addition to other complications. A bronchospasm is an example of what type of modification to which section of the nervous system?

Organophosphate insecticides are acetylcholinesterase inhibitors. Which combination of symptoms might you expect to observe in a patient with organophosphate poisoning (ingestion of organophosphates)?

Autonomic motor pathways all consist of two autonomic motor neurons in a row, while somatic motor pathways consist only of a single somatic motor neuron.

Beta blockers (beta-adrenergic antagonists) are drugs used to treat a variety of medical conditions (e.g., glaucoma, heart problems, anxiety disorders). These drugs have what effect on the actions of neurons on their effectors, and in which autonomic motor pathway (parasympathetic, sympathetic)?

If you removed the external Ca⁺⁺ at the neuromuscular junction, you would most directly affect which of the following?

The graded potentials produced in skeletal muscle fibers are called _____, and they tend to be produced near the _____ of the muscle fiber.

The somatic nervous system has dual innervation of its effectors.

Activation of the somatic nervous system is NOT important for which of the following functions?

The main control center of the autonomic nervous system is

Which of the following structures is completely in the periphery?

Which of the following drug types might cause uncontrollable muscle seizures?

Which of the following is an effector of the autonomic nervous system?

When fighting or fleeing a stressor, blood vessels to the heart, skeletal muscles and liver vasodilate, while blood vessels to the kidneys and gastrointestinal tract vasoconstrict.