Portage Learning A&P II: Final Exam 217
Questions with correct Answers/Graded A+
Collection of cell bodies found in the peripheral nervous system: - -Ganglia
-This part of the autonomic system increases digestion. - -parasympathetic
-The ventral root of a nerve contains what type of neurons - -motor (efferent)
-Part of neuron that conducts nerve impulse away from cell body - -Axon
-A neuron going to bicep of the forearm is part of the - -Peripheral/ Somatic
-T/F: Neurons come into direct physical contact w/ one another. - -False: don't
physically touch.
-Describe function and release of neurotransmitters - -Neurotransmitters are
chemicals stored inside secretory vesicles (axon terminal vesicles) at the end of the axon
terminals.
When neurotransmitters are released by the axon terminal vesicles, they carry the
transmission of the nerve impulse from one neuron to another.
-An efferent neuron carries information: - -From the central to the peripheral nervous
system
-An afferent neuron carries information: - -From the peripheral to the central nervous
system.
-An interneuron inside the spinal cord is part of the: - -central nervous system
, -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.
-A postsynaptic neuron would be found - -after the synapse
-what is the location and function of satellite cells - -location: peripheral nervous
system
function: regulate the environment of neuron cell bodies.
-what is the location and function of astrocytes - -location: central nervous system, the
brain
function: forms the blood, brain barrier
-A patients 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? Why not?
- -Yes. Peripheral nerves can regenerate the length of an axon through axonal
regeneration because of the growth of Schwann cells ahead of the axon.
-At rest, a neuron plasma membrane is: - -Polarized (around -70mV)
-Which of the following is false concerning the sodium-potassium pump? - -The overall
effect is a negative charge on the outside of the membrane.
-Which of the following is true concerning the sodium-potassium pump? - -It must
remain in constant operation to maintain resting state.
-T/F : A sensory neuron is signaling the body of extreme pain. This means that the
strength of the action potential is greater than usual. - -False. There is no variation in
the strength of the action potentials. (all or nothing) There is a variation in the number
and frequency of neurons firing.
, -Which of the following statement is false concerning the neuromuscular junction? - -
ACh is released from the presynaptic motor neuron to cause an action potential in the
muscle fiber.
-Which of the following is true concerning the neuromuscular junction? - -The NMJ
terminates on a muscle fiber.
-How is a message sent from one neuron to another? - -There is a minute fluid-filled
space, called a synapse, between the axon terminal of the sending neuron and the
dendrite of the receiving neuron. When a nerve impulse reaches the end of an axon,
neurotransmitters are released into the synapse. These bind with a receptor on the next
neuron, opening Na+ gates in the receiving dendrite which causes depolarization and
the impulse is carried.
Synapse!
-What neurotransmitter is found in the neuromuscular junction? - -ACh, Acetylcholine
-What neurotransmitter helps regulate emotional responses and muscle tone? - -
Dopamine
-In a reflex, the ___________ neuron conducts nerve impulses along a pathway
towards the central nervous system. - -Sensory (afferent)
-T/F: Action potentials travel in one direction within the same neuron. - -True
-T/F: Reflexes occur only with conscious intervention from the brain. - -False
-In a reflex, the __________ neuron conducts nerve impulses along a pathway to
create a response. - -Motor (efferent)
Questions with correct Answers/Graded A+
Collection of cell bodies found in the peripheral nervous system: - -Ganglia
-This part of the autonomic system increases digestion. - -parasympathetic
-The ventral root of a nerve contains what type of neurons - -motor (efferent)
-Part of neuron that conducts nerve impulse away from cell body - -Axon
-A neuron going to bicep of the forearm is part of the - -Peripheral/ Somatic
-T/F: Neurons come into direct physical contact w/ one another. - -False: don't
physically touch.
-Describe function and release of neurotransmitters - -Neurotransmitters are
chemicals stored inside secretory vesicles (axon terminal vesicles) at the end of the axon
terminals.
When neurotransmitters are released by the axon terminal vesicles, they carry the
transmission of the nerve impulse from one neuron to another.
-An efferent neuron carries information: - -From the central to the peripheral nervous
system
-An afferent neuron carries information: - -From the peripheral to the central nervous
system.
-An interneuron inside the spinal cord is part of the: - -central nervous system
, -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.
-A postsynaptic neuron would be found - -after the synapse
-what is the location and function of satellite cells - -location: peripheral nervous
system
function: regulate the environment of neuron cell bodies.
-what is the location and function of astrocytes - -location: central nervous system, the
brain
function: forms the blood, brain barrier
-A patients 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? Why not?
- -Yes. Peripheral nerves can regenerate the length of an axon through axonal
regeneration because of the growth of Schwann cells ahead of the axon.
-At rest, a neuron plasma membrane is: - -Polarized (around -70mV)
-Which of the following is false concerning the sodium-potassium pump? - -The overall
effect is a negative charge on the outside of the membrane.
-Which of the following is true concerning the sodium-potassium pump? - -It must
remain in constant operation to maintain resting state.
-T/F : A sensory neuron is signaling the body of extreme pain. This means that the
strength of the action potential is greater than usual. - -False. There is no variation in
the strength of the action potentials. (all or nothing) There is a variation in the number
and frequency of neurons firing.
, -Which of the following statement is false concerning the neuromuscular junction? - -
ACh is released from the presynaptic motor neuron to cause an action potential in the
muscle fiber.
-Which of the following is true concerning the neuromuscular junction? - -The NMJ
terminates on a muscle fiber.
-How is a message sent from one neuron to another? - -There is a minute fluid-filled
space, called a synapse, between the axon terminal of the sending neuron and the
dendrite of the receiving neuron. When a nerve impulse reaches the end of an axon,
neurotransmitters are released into the synapse. These bind with a receptor on the next
neuron, opening Na+ gates in the receiving dendrite which causes depolarization and
the impulse is carried.
Synapse!
-What neurotransmitter is found in the neuromuscular junction? - -ACh, Acetylcholine
-What neurotransmitter helps regulate emotional responses and muscle tone? - -
Dopamine
-In a reflex, the ___________ neuron conducts nerve impulses along a pathway
towards the central nervous system. - -Sensory (afferent)
-T/F: Action potentials travel in one direction within the same neuron. - -True
-T/F: Reflexes occur only with conscious intervention from the brain. - -False
-In a reflex, the __________ neuron conducts nerve impulses along a pathway to
create a response. - -Motor (efferent)
