Ahlei Chapter 2 Exam Prep Solved Questions Accurate Answers Premium Review

AHLEI CHAPTER 2 EXAM PREP SOLVED
QUESTIONS ACCURATE ANSWERS
PREMIUM REVIEW

◉ The term peripheral nervous system refers to all parts of the
nervous system outside of the brain and spinal cord.
Answer: True


◉ The autonomic nervous system refers to the neurons that carry
information between the central nervous system and internal
organs (such as the heart and lungs) and glands.
Answer: True


◉ The sympathetic branch of the autonomic nervous system is
thought of as an "emergency system." It prepares the body for
"fight or flight" during times of danger, stress or high emotion.
Answer: True


◉ A nerve is a bundle of neuron axons.
Answer: True


◉ The somatic and autonomic nervous systems are part of the
peripheral nervous system.
Answer: True

, ◉ The sympathetic nervous system is most active in times of
danger or when emotions run high.
Answer: True


◉ The dendrites and the soma (cell body) are the receiving areas
of neuron where information from other neurons is accepted.
Answer: True


◉ Action potentials are carried down the axon of the neuron to
the axon terminals.
Answer: True


◉ During a nerve impulse (action potential) potassium (K+) ions
rush across the neuron's cell membrane to the inside of the axon
and sodium (Na+) rush to the outside of the neuron.
Answer: False


◉ The nerve impulse (action potential) is an "all or none" event so
nerve impulses do not vary much in terms of size or duration.
Answer: True


◉ The resting potential becomes an action potential when the
neuron passes the threshold for firing.
Answer: True