Sympathetic Nervous System Quiz Questions
Chapter 28 Quiz
- 1.Once the threshold potential is reached
- A.
An action potential is inevitable
- B.
Na+ channels close
- C.
K+ channels open
- D.
The interior of the cell becomes negative with respect to the outside
- 2.The functional unit of the nervous system is the
- A.
neuron
- B.
Cell body
- C.
Synapse
- D.
Axon
- 3.The simplest animals to display cephalization and centralization of the nervous system are
- A.
Sponges
- B.
Echinoderms
- C.
Cnidarians
- D.
Flatworms
- 4.Which of the following results from stimulation by the parasympathetic nervous system?
- A.
Inhibition of urination
- B.
Inhibition of the digestive organs
- C.
Pupil constriction
- D.
Increased heart rate
- 5.Which of the following statements about resting potential is true?
- A.
A resting membrane allows much more sodium than potassium to diffuse across
- B.
The concentration of sodium is much higher outside the cell than inside
- C.
The resting potential exists because of differences in glucose concentration inside and outside the cell
- D.
The concentration of sodium is much higher inside the cell than outside
- 6.One neurotransmitter associated with sleep, mood, attention, and learning is
- A.
Epinephrine
- B.
Acetylcholine
- C.
Serotonin
- D.
nitrous oxide
- 7.Which of the following results from stimulation by the sympathetic nervous system?
- A.
Decreased heart rate
- B.
Increased heart rate
- C.
stimulation of the digestive organs
- D.
Pupil constriction
- 8.Which division of the human nervous system carries signals to skeletal muscles
- A.
Autonomic nervous system
- B.
Sympathetic nervous system
- C.
Parasympathetic nervous system
- D.
Motor nervous system
- 9.As the strength of the stimulus changes, the action potential changes in
- A.
Duration
- B.
Amplitude
- C.
Frequency
- D.
Strength
- 10.The gap between the transmitting and receiving neurons in a chemical synapse is known as the
- A.
Synaptic node
- B.
Synaptic cleft
- C.
Gap junction
- D.
Node of Ranvier
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