BIO 242 Exam Question and Answers
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Which of these does NOT release acetylcholine?
A) sympathetic pre-ganglionic fibers
B) sympathetic post-ganglionic fibers
C) parasympathetic pre-ganglionic fibers
D) parasympathetic post-ganglionic fibers B) sympathetic post-ganglionic fibers
Parasympathetic functions include _____.
A) raising blood glucose levels
B) a stimulation of heart rate and force of contraction
C) allowing the body to cope with an external threat
D) lens accommodation for close vision D) lens accommodation for close vision
Dual innervation means that:
A) an organ is served by both spinal and cranial nerves
B) an organ is served by the central nervous system and the peripheral nervous system
C) an organ is served by both sympathetic and parasympathetic fibers
D) an organ is served by both the somatic and autonomic nervous systems C) an organ is
served by both sympathetic and parasympathetic fibers
,Which of the following best describes the concept of integration?
A) the CNS stimulates contraction of skeletal
B) the nervous system processes and interprets sensory input and decides what should be done at
each moment
C) the bodies monitors information collected from the many sensory receptors
D) the nervous system generates neurons in order to replace or repair damaged neurons; this
permits optimal communication between the CNS and the body's effector organs B) the
nervous system processes and interprets sensory input and decides what should be done at each
moment
The conducting region of the neuron that transmits signals away from cell body is the ______.
A) myelin sheath
B) nil bodies
C) axon
D) dendrite C) axon
Which of the following organs does NOT exhibit parasympathetic tone/domination?
A) urinary tract organs
B) heart
C) blood vessels
D) digestive smooth muscle C) blood vessels
Which of the following is not true of the synapse?
,A) neurotransmitters released are always excitatory
B) it ensures unidirectional communication between neurons
C) it is a chemical event, rather than electrical
D) there is a space (cleft) between neurons that prevents impulses from directly passing from one
neuron to the next A) neurotransmitters released are always excitatory
The interior surface of a neuron's plasma membrane at resting membrane potential will have a
________.
A) positive charge and contains less sodium than outside of the cell
B) negative charge and contains more sodium than outside of the cell
C) negative charge and contains less sodium than outside of the cell
D) positive charge and contains more sodium than outside of the cell C) negative charge and
contains less sodium than outside of the cell
Visceral reflex arcs differ from somatic in that ________.
A) visceral arcs involve two motor neurons
B) somatic arcs contain one additional component that visceral arcs do not possess
C) visceral arcs contain two sensory neurons
D) visceral arcs do not use integration centers A) visceral arcs involve two motor neurons
Which of the following would NOT take place during exercise or vigorous physical activity?
A) increased blood flow to the heart or muscles
B) increase in release of glucose from the liver
, C) increased digestive activity to supply glucose for energy
D) increase in ventilation/respiratory rate C) increased digestive activity to supply glucose for
energy
Exercise, excitement, emergency, and embarrassment are primarily directed by which system?
A) sympathetic
B) parasympathetic
C) somatic A) sympathetic
Which of the following types of ions channels are always open?
A) chemically gated
B) mechanically gated
C) leakage
D) voltage-gated C) leakage
Which of the following is not characteristic of neurons?
A) they conduct impulses
B) they have an exceptionally high metabolic rate
C) they have extreme longevity
D) they are mitotic D) they are mitotic
Emotions influence autonomic reactions primarily through integration in the ________.
Verified by Experts
Which of these does NOT release acetylcholine?
A) sympathetic pre-ganglionic fibers
B) sympathetic post-ganglionic fibers
C) parasympathetic pre-ganglionic fibers
D) parasympathetic post-ganglionic fibers B) sympathetic post-ganglionic fibers
Parasympathetic functions include _____.
A) raising blood glucose levels
B) a stimulation of heart rate and force of contraction
C) allowing the body to cope with an external threat
D) lens accommodation for close vision D) lens accommodation for close vision
Dual innervation means that:
A) an organ is served by both spinal and cranial nerves
B) an organ is served by the central nervous system and the peripheral nervous system
C) an organ is served by both sympathetic and parasympathetic fibers
D) an organ is served by both the somatic and autonomic nervous systems C) an organ is
served by both sympathetic and parasympathetic fibers
,Which of the following best describes the concept of integration?
A) the CNS stimulates contraction of skeletal
B) the nervous system processes and interprets sensory input and decides what should be done at
each moment
C) the bodies monitors information collected from the many sensory receptors
D) the nervous system generates neurons in order to replace or repair damaged neurons; this
permits optimal communication between the CNS and the body's effector organs B) the
nervous system processes and interprets sensory input and decides what should be done at each
moment
The conducting region of the neuron that transmits signals away from cell body is the ______.
A) myelin sheath
B) nil bodies
C) axon
D) dendrite C) axon
Which of the following organs does NOT exhibit parasympathetic tone/domination?
A) urinary tract organs
B) heart
C) blood vessels
D) digestive smooth muscle C) blood vessels
Which of the following is not true of the synapse?
,A) neurotransmitters released are always excitatory
B) it ensures unidirectional communication between neurons
C) it is a chemical event, rather than electrical
D) there is a space (cleft) between neurons that prevents impulses from directly passing from one
neuron to the next A) neurotransmitters released are always excitatory
The interior surface of a neuron's plasma membrane at resting membrane potential will have a
________.
A) positive charge and contains less sodium than outside of the cell
B) negative charge and contains more sodium than outside of the cell
C) negative charge and contains less sodium than outside of the cell
D) positive charge and contains more sodium than outside of the cell C) negative charge and
contains less sodium than outside of the cell
Visceral reflex arcs differ from somatic in that ________.
A) visceral arcs involve two motor neurons
B) somatic arcs contain one additional component that visceral arcs do not possess
C) visceral arcs contain two sensory neurons
D) visceral arcs do not use integration centers A) visceral arcs involve two motor neurons
Which of the following would NOT take place during exercise or vigorous physical activity?
A) increased blood flow to the heart or muscles
B) increase in release of glucose from the liver
, C) increased digestive activity to supply glucose for energy
D) increase in ventilation/respiratory rate C) increased digestive activity to supply glucose for
energy
Exercise, excitement, emergency, and embarrassment are primarily directed by which system?
A) sympathetic
B) parasympathetic
C) somatic A) sympathetic
Which of the following types of ions channels are always open?
A) chemically gated
B) mechanically gated
C) leakage
D) voltage-gated C) leakage
Which of the following is not characteristic of neurons?
A) they conduct impulses
B) they have an exceptionally high metabolic rate
C) they have extreme longevity
D) they are mitotic D) they are mitotic
Emotions influence autonomic reactions primarily through integration in the ________.
