PORTAGE LEARNING A&P II FINAL EXAM
1.This is a collection of cell bodies found in the peripheral nervous system.-
: Ganglia
2.This part of the autonomic system increases digestion.:
Parasympathetic
3.The ventral root of a nerve contains what type of neurons?:
Motor (Efferent)
4.This part of a neuron conducts nerve impulses away from the cell body.: -
Axon
5.An interneuron inside the spinal cord is part of the::
Central nervous system
6.Describe the synthesis and storage of neurotransmitters.:
The neuron cell body manufactures neurotransmitters, which are stored
,in secretory vesicles at the end of axon terminals.
7.An afferent neuron carries information::
From the peripheral to the central nervous system
8.What is the location and function of Astrocytes?:
Astrocytes form the blood/brain barrier, are found in the brain,
and are part of the CNS
9.A patient's left thumb was severed in a cooking accident and then reat-
tached during surgery. Would the patient be expected to regrow axons in
their thumb? Why or why not?:
Yes; Peripheral nerves can regenerate the length of the axon through
axonal regeneration because of the growth of Schwann cells ahead of
the axon.
10.Name and describe what is occurring in the neuron cell membrane in
section 2 of the diagram. Include the charge of the membrane during this
phase.:
Depolarization: The sodium gates open and sodium rushes into the
axon during the depolarization phase of the action potential.
Voltage travels past zero and then on up to +40 mV.
, 11.At rest, a neuron plasma membrane is:: -
70Mv
12.Which of the following is false concerning the sodium-potassium pump?-
: The overall effect is a negative charge on the outside of the membrane
13.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.:
False. The action potential is always the same. The frequency and
number of nuerons activated change the increase in intensity.
14.Which of the following statements is false concerning the
neuromuscular junction?:
Ach is released from the presynaptic motor neuron to cause an action
potential in the muscle fiber.
15.How is a message sent from one neuron to another?:
A signal travels from the cell body through the axon and releases
1.This is a collection of cell bodies found in the peripheral nervous system.-
: Ganglia
2.This part of the autonomic system increases digestion.:
Parasympathetic
3.The ventral root of a nerve contains what type of neurons?:
Motor (Efferent)
4.This part of a neuron conducts nerve impulses away from the cell body.: -
Axon
5.An interneuron inside the spinal cord is part of the::
Central nervous system
6.Describe the synthesis and storage of neurotransmitters.:
The neuron cell body manufactures neurotransmitters, which are stored
,in secretory vesicles at the end of axon terminals.
7.An afferent neuron carries information::
From the peripheral to the central nervous system
8.What is the location and function of Astrocytes?:
Astrocytes form the blood/brain barrier, are found in the brain,
and are part of the CNS
9.A patient's left thumb was severed in a cooking accident and then reat-
tached during surgery. Would the patient be expected to regrow axons in
their thumb? Why or why not?:
Yes; Peripheral nerves can regenerate the length of the axon through
axonal regeneration because of the growth of Schwann cells ahead of
the axon.
10.Name and describe what is occurring in the neuron cell membrane in
section 2 of the diagram. Include the charge of the membrane during this
phase.:
Depolarization: The sodium gates open and sodium rushes into the
axon during the depolarization phase of the action potential.
Voltage travels past zero and then on up to +40 mV.
, 11.At rest, a neuron plasma membrane is:: -
70Mv
12.Which of the following is false concerning the sodium-potassium pump?-
: The overall effect is a negative charge on the outside of the membrane
13.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.:
False. The action potential is always the same. The frequency and
number of nuerons activated change the increase in intensity.
14.Which of the following statements is false concerning the
neuromuscular junction?:
Ach is released from the presynaptic motor neuron to cause an action
potential in the muscle fiber.
15.How is a message sent from one neuron to another?:
A signal travels from the cell body through the axon and releases
