Anatomy and Physiology 2 Final Examination (A&P
2) Exam Questions and Answers
This is a collection of cell bodies found in the peripheral nervous system. -
ANSWER>>Ganglia
This part of the autonomic system increases digestion. -
ANSWER>>Parasympathetic
The dorsal root of a nerve contains what type of neurons? - ANSWER>>Sensory
(Afferent)
This part of a neuron conducts nerve impulses towards the cell body. -
ANSWER>>Dendrites
An interneuron inside the spinal cord is part of the: - ANSWER>>D. Central
nervous system
The neuron pictured, below, is best described as: - ANSWER>>Multipolar
True or false: Neurons do not physically touch one another. - ANSWER>>True
Describe the synthesis and storage of neurotransmitters. - ANSWER>>The neuron
cell body manufactures neurotransmitters, which are stored in secretory vesicles
at the end of axon terminals.
An afferent neuron carries information: - ANSWER>>From the peripheral to the
central nervous system
A postsynaptic neuron would be found: - ANSWER>>After the synapse
,What is the location and function of Astrocytes? - ANSWER>>Location: Central
nervous system (CNS)
Function: Regulation of chemical environment inside CNS, forming a physical
barrier (blood-brain-barrier) by wrapping around blood capillaries
A patient's left thumb was severed in a cooking accident and then reattached
during surgery. Would the patient be expected to regrow axons in their thumb?
Why or why not? - ANSWER>>Yes; Peripheral nerves can regenerate the length of
the axon through axonal regeneration because of the growth of Schwann cells
ahead of the axon.
Name and describe what is occurring in the neuron cell membrane in section 4 of
the diagram. Include the charge of the membrane during this phase. -
ANSWER>>Afterpolarization (Hyperpolarization) Potassium gates are slow to
close and there is an undershoot of the potential.
The charge drops below -70mV and then returns to -70mV once at resting state
again.
At rest, a neuron plasma membrane is: - ANSWER>>-70 mV
Which of the following is true concerning the sodium-potassium pump? -
ANSWER>>It must remain in constant operation to maintain the resting state.
True or false: A sensory neuron is signaling the body of a light touch. This means
that the strength of the action potential is weaker than usual. Explain your
reasoning. - ANSWER>>False
Which of the following statements is true concerning the neuromuscular
junction? - ANSWER>>The NMJ terminates on a muscle fiber.
What prevents continuous stimulation of a nerve synapse and how is this
accomplished? - ANSWER>>The short existence of neurotransmitters in the
, synapse prevents continuous stimulation. Some synapses contain enzymes that
rapidly inactivate neurotransmitters and other synapses rapidly absorb the
neurotransmitter.
What neurotransmitter is found at the neuromuscular junctions? -
ANSWER>>Acetylcholine (ACh)
True or False: Action potentials travel in one direction within the same neuron. -
ANSWER>>True
True or False: Reflexes occur slower than a conscious decision to move from the
brain. - ANSWER>>False
Fill in the blank: In a reflex, the ____________ neuron conducts nerve impulses
along a pathway to create a response. - ANSWER>>motor (efferent)
Where is the integration center of a reflex located? - ANSWER>>CNS (central
nervous system)
Which of the following statements is false about reflexes? - ANSWER>>Pulling a
hand away from a hot flame is not a reflex; it is entirely voluntary.
What is true about the stretch reflex? - ANSWER>>The muscle spindle detects
stretch within the muscle.
What is true about the flexor withdrawal reflex? - ANSWER>>A. It does not
involve interneurons.
B. It involves excitatory interneurons.
C. It involves inhibitory interneurons.
D. The effect of the reflex is to create a co-contraction of two muscles
E. A&D
Correct! F. B&C
2) Exam Questions and Answers
This is a collection of cell bodies found in the peripheral nervous system. -
ANSWER>>Ganglia
This part of the autonomic system increases digestion. -
ANSWER>>Parasympathetic
The dorsal root of a nerve contains what type of neurons? - ANSWER>>Sensory
(Afferent)
This part of a neuron conducts nerve impulses towards the cell body. -
ANSWER>>Dendrites
An interneuron inside the spinal cord is part of the: - ANSWER>>D. Central
nervous system
The neuron pictured, below, is best described as: - ANSWER>>Multipolar
True or false: Neurons do not physically touch one another. - ANSWER>>True
Describe the synthesis and storage of neurotransmitters. - ANSWER>>The neuron
cell body manufactures neurotransmitters, which are stored in secretory vesicles
at the end of axon terminals.
An afferent neuron carries information: - ANSWER>>From the peripheral to the
central nervous system
A postsynaptic neuron would be found: - ANSWER>>After the synapse
,What is the location and function of Astrocytes? - ANSWER>>Location: Central
nervous system (CNS)
Function: Regulation of chemical environment inside CNS, forming a physical
barrier (blood-brain-barrier) by wrapping around blood capillaries
A patient's left thumb was severed in a cooking accident and then reattached
during surgery. Would the patient be expected to regrow axons in their thumb?
Why or why not? - ANSWER>>Yes; Peripheral nerves can regenerate the length of
the axon through axonal regeneration because of the growth of Schwann cells
ahead of the axon.
Name and describe what is occurring in the neuron cell membrane in section 4 of
the diagram. Include the charge of the membrane during this phase. -
ANSWER>>Afterpolarization (Hyperpolarization) Potassium gates are slow to
close and there is an undershoot of the potential.
The charge drops below -70mV and then returns to -70mV once at resting state
again.
At rest, a neuron plasma membrane is: - ANSWER>>-70 mV
Which of the following is true concerning the sodium-potassium pump? -
ANSWER>>It must remain in constant operation to maintain the resting state.
True or false: A sensory neuron is signaling the body of a light touch. This means
that the strength of the action potential is weaker than usual. Explain your
reasoning. - ANSWER>>False
Which of the following statements is true concerning the neuromuscular
junction? - ANSWER>>The NMJ terminates on a muscle fiber.
What prevents continuous stimulation of a nerve synapse and how is this
accomplished? - ANSWER>>The short existence of neurotransmitters in the
, synapse prevents continuous stimulation. Some synapses contain enzymes that
rapidly inactivate neurotransmitters and other synapses rapidly absorb the
neurotransmitter.
What neurotransmitter is found at the neuromuscular junctions? -
ANSWER>>Acetylcholine (ACh)
True or False: Action potentials travel in one direction within the same neuron. -
ANSWER>>True
True or False: Reflexes occur slower than a conscious decision to move from the
brain. - ANSWER>>False
Fill in the blank: In a reflex, the ____________ neuron conducts nerve impulses
along a pathway to create a response. - ANSWER>>motor (efferent)
Where is the integration center of a reflex located? - ANSWER>>CNS (central
nervous system)
Which of the following statements is false about reflexes? - ANSWER>>Pulling a
hand away from a hot flame is not a reflex; it is entirely voluntary.
What is true about the stretch reflex? - ANSWER>>The muscle spindle detects
stretch within the muscle.
What is true about the flexor withdrawal reflex? - ANSWER>>A. It does not
involve interneurons.
B. It involves excitatory interneurons.
C. It involves inhibitory interneurons.
D. The effect of the reflex is to create a co-contraction of two muscles
E. A&D
Correct! F. B&C
