BIOL 252 Module 9 Exam
Review: 70+ Practice Questions
Section 1: Nervous System & Reflexes (Questions 1-37)
1. This part of the autonomic system increases digestion.
o A. Sympathetic
o B. Somatic
o C. Parasympathetic
o D. Enteric
2. The ventral root of a nerve contains what type of neurons?
o A. Sensory (Afferent)
o B. Motor (Efferent)
o C. Interneurons
o D. Glial cells
3. This part of a neuron conducts nerve impulses away from the cell body.
o A. Dendrite
o B. Axon
o C. Soma
o D. Synapse
4. An interneuron inside the spinal cord is part of the:
o A. Central nervous system
o B. Peripheral nervous system
o C. Autonomic nervous system
o D. Somatic nervous system
5. An afferent neuron carries information:
o A. From the central to the peripheral nervous system
o B. From the peripheral to the central nervous system
o C. Between two interneurons
o D. From a motor neuron to a muscle
6. Describe the synthesis and storage of neurotransmitters.
o A. The neuron cell body manufactures neurotransmitters,
which are stored in secretory vesicles at the end of axon
terminals.
o B. Neurotransmitters are synthesized in the dendrites and stored in
the nucleus.
, o C. The myelin sheath synthesizes neurotransmitters and stores
them in the axon hillock.
o D. Neurotransmitters are absorbed from the bloodstream and
stored in the synapse.
7. What is the location and primary function of Astrocytes?
o A. Located in the brain and spinal cord (CNS); form the blood-
brain barrier.
o B. Located in the peripheral nerves; produce cerebrospinal fluid.
o C. Located in the brain; phagocytize pathogens and debris.
o D. Located in the spinal cord; myelinate axons.
8. 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?
o A. Yes; peripheral nerves can regenerate through axonal
regeneration due to the growth of Schwann cells ahead of the
axon.
o B. Yes; the spinal cord can send new nerve cells to the thumb.
o C. No; only neurons in the brain can regenerate.
o D. No; once a neuron is damaged, it cannot be repaired.
9. At rest, a neuron plasma membrane is:
o A. +30mV
o B. -70mV
o C. 0mV
o D. -55mV
10. Which of the following is false concerning the sodium-potassium pump?
o A. It pumps 3 sodium ions out of the cell.
o B. It pumps 2 potassium ions into the cell.
o C. The overall effect is a negative charge on the outside of the
membrane.
o D. It requires ATP to function.
11. 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.
o A. False. The action potential is always the same strength. The
intensity is coded by the frequency and number of neurons
activated.
o B. True. A weaker stimulus generates a smaller action potential.
o C. False. The action potential is always weaker in sensory neurons.
o D. True. The action potential strength depends on the type of
stimulus.
12. Which of the following statements is false concerning the neuromuscular
junction?
o A. Acetylcholine (ACh) is released from the presynaptic motor
neuron.
o B. ACh binds to receptors on the motor end plate.
Review: 70+ Practice Questions
Section 1: Nervous System & Reflexes (Questions 1-37)
1. This part of the autonomic system increases digestion.
o A. Sympathetic
o B. Somatic
o C. Parasympathetic
o D. Enteric
2. The ventral root of a nerve contains what type of neurons?
o A. Sensory (Afferent)
o B. Motor (Efferent)
o C. Interneurons
o D. Glial cells
3. This part of a neuron conducts nerve impulses away from the cell body.
o A. Dendrite
o B. Axon
o C. Soma
o D. Synapse
4. An interneuron inside the spinal cord is part of the:
o A. Central nervous system
o B. Peripheral nervous system
o C. Autonomic nervous system
o D. Somatic nervous system
5. An afferent neuron carries information:
o A. From the central to the peripheral nervous system
o B. From the peripheral to the central nervous system
o C. Between two interneurons
o D. From a motor neuron to a muscle
6. Describe the synthesis and storage of neurotransmitters.
o A. The neuron cell body manufactures neurotransmitters,
which are stored in secretory vesicles at the end of axon
terminals.
o B. Neurotransmitters are synthesized in the dendrites and stored in
the nucleus.
, o C. The myelin sheath synthesizes neurotransmitters and stores
them in the axon hillock.
o D. Neurotransmitters are absorbed from the bloodstream and
stored in the synapse.
7. What is the location and primary function of Astrocytes?
o A. Located in the brain and spinal cord (CNS); form the blood-
brain barrier.
o B. Located in the peripheral nerves; produce cerebrospinal fluid.
o C. Located in the brain; phagocytize pathogens and debris.
o D. Located in the spinal cord; myelinate axons.
8. 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?
o A. Yes; peripheral nerves can regenerate through axonal
regeneration due to the growth of Schwann cells ahead of the
axon.
o B. Yes; the spinal cord can send new nerve cells to the thumb.
o C. No; only neurons in the brain can regenerate.
o D. No; once a neuron is damaged, it cannot be repaired.
9. At rest, a neuron plasma membrane is:
o A. +30mV
o B. -70mV
o C. 0mV
o D. -55mV
10. Which of the following is false concerning the sodium-potassium pump?
o A. It pumps 3 sodium ions out of the cell.
o B. It pumps 2 potassium ions into the cell.
o C. The overall effect is a negative charge on the outside of the
membrane.
o D. It requires ATP to function.
11. 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.
o A. False. The action potential is always the same strength. The
intensity is coded by the frequency and number of neurons
activated.
o B. True. A weaker stimulus generates a smaller action potential.
o C. False. The action potential is always weaker in sensory neurons.
o D. True. The action potential strength depends on the type of
stimulus.
12. Which of the following statements is false concerning the neuromuscular
junction?
o A. Acetylcholine (ACh) is released from the presynaptic motor
neuron.
o B. ACh binds to receptors on the motor end plate.
