Chapter 13/14 part II: Exam 5

Decreased parasympathetic stimulation could cause:

• Frequent urination

• Diarrhea

• Dry mouth

• Slow heart rate

Tags

NGSS.HS-LS1-3

Preganglionic and postganglionic parasympathetic fibers secrete ACh. Drugs stimulating ACh release will:

• Diminish sympathetic effects like pupil dilation

• Diminish parasympathetic effects like dry mouth

• Enhance sympathetic effects like decreased heart rate

• Enhance parasympathetic effects like excessive drooling

Mr. T, with spinal injury at T3, has increased heart rate and pale, cold upper body skin but flushed warm legs when BP drops. Which system is responsible?

• Sympathetic system causes increased heart rate and vasoconstriction

• Sympathetic system causes increased heart rate and vasodilation

• Parasympathetic system causes vasodilation of legs

• CNS controls blood pressure

Tags

NGSS.HS-LS1-3

Why do brainstem injuries cause autonomic dysfunction?

• Brainstem contains hypothalamus

• Autonomic functions controlled by cerebral cortex

• Autonomic functions controlled by cerebellum

• Brainstem contains autonomic centers and parasympathetic neuron cell bodies

If parasympathetic tone is dominant in airways, what happens?

• Patients cured of asthma

• Airways exhibit bronchodilation

• Airways unaffected

• Airways exhibit bronchoconstriction

Tags

NGSS.HS-LS1-3

Sally sustained damage to some autonomic ganglia. What part of the visceral reflex arc is interrupted?

• Integration

• Motor response in a target cell

• Initiation of a motor impulse in the CNS

• Sensory reception

Astrocytes and tight junctions create a barrier to viruses and bacteria known as:

• Meninges

• The blood-brain barrier

• Choroid plexuses

• Dural folds

Which of the following should NOT cross the blood-brain barrier with ease?

• Carbon dioxide

• Glucose

• Large, polar molecules

• Lipid-based molecules

The spinal cord lacks a portion of the dura mater known as the:

• Periosteal layer

• Epidural space

• Subdural space

• Meningeal layer

Integrative functions are carried out by the:

• Autonomic nervous system

• Peripheral nervous system

• Central nervous system

• All of the above