BIOD 152:BIOD 152 Package Deal:BIOD 152
A&P 2 Module 1-7:BIOD 152 Anatomy &
Physiology:BIOD 152 Module:BIOD 152 Final
Exam: Questions & Answers: Latest Updated
A+ Score Solutions(Everything You need)
BIOD 152 A&P 2 Module 1–7 & Final Exam Package
Verified Questions & Answers | Latest 2026/2027 Update | Graded A+
MODULE 1: NERVOUS SYSTEM ORGANIZATION & ACTION POTENTIALS
1. The dorsal root of a nerve contains what type of neurons?
• A) Motor / Efferent
• B) Sensory / Afferent
• C) Interneurons
• D) Both motor and sensory neurons
Answer: B. Sensory / Afferent
Rationale: The dorsal root contains sensory (afferent) neurons that bring
information from the periphery into the spinal cord, whereas the ventral root
contains motor (efferent) neurons that send signals from the spinal cord to
muscles .
,2. This part of the autonomic system accelerates the heartbeat and increases
breathing rate.
• A) Parasympathetic nervous system
• B) Sympathetic nervous system
• C) Somatic nervous system
• D) Enteric nervous system
Answer: B. Sympathetic nervous system
Rationale: The sympathetic nervous system is responsible for the "fight or flight"
response, which includes increased heart rate and respiratory rate. The
parasympathetic system slows these functions .
3. 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.
Answer: Depolarization: Sodium gates open allowing sodium ions (Na⁺) to rush
into the neuron. The membrane potential rapidly rises from the resting state (-
70mV) up past zero to approximately +40mV. This phase initiates the action
potential as the inside of the membrane becomes positively charged compared to
the outside .
4. This part of a neuron conducts nerve impulses towards the cell body.
• A) Axon
• B) Dendrites
• C) Synaptic terminals
• D) Myelin sheath
Answer: B. Dendrites
,Rationale: Dendrites receive electrical signals from other neurons and conduct
these impulses toward the neuron's cell body .
5. A neuron going to the bicep of the forearm is part of the:
• A) Central nervous system only
• B) Peripheral nervous system only
• C) Central nervous system and autonomic nervous system
• D) Somatic nervous system
Answer: D. Somatic nervous system
Rationale: Neurons controlling skeletal muscles, such as the bicep, are typically
part of the somatic nervous system, a division of the PNS responsible for voluntary
movement .
6. The neuron pictured is best described as:
• A) Multipolar
• B) Bipolar
• C) Unipolar
• D) Anaxonic
Answer: B. Bipolar
Rationale: Bipolar neurons have two processes: one dendrite and one axon. They
are often found in sensory pathways such as the retina and olfactory mucosa .
7. True or False: Neurons do not physically touch one another.
• A) True
, • B) False
Answer: A. True
Rationale: Neurons are separated by a synaptic cleft, a small gap through which
neurotransmitters pass to transmit signals chemically rather than through direct
physical contact .
8. Describe the function and release of neurotransmitters.
Answer: Neurotransmitters are chemicals stored within secretory vesicles (axon
terminal vesicles) at the end of axon terminals. When an action potential reaches
the axon terminal, it triggers calcium influx that causes the vesicles to fuse with
the presynaptic membrane, releasing neurotransmitters into the synaptic cleft.
These chemical messengers bind to receptors on the postsynaptic neuron or
muscle fiber to continue or modulate the nerve impulse .
9. An afferent neuron carries information:
• A) From the central nervous system to the periphery
• B) From the periphery to the central nervous system
• C) Between two neurons in the CNS
• D) From the autonomic nervous system to muscles
Answer: B. From the periphery to the central nervous system
Rationale: Afferent neurons carry sensory information from sensory receptors
toward the CNS .
10. What is the location and function of Satellite cells?
Answer: Location: peripheral nervous system (PNS). Function: Regulation of
environment of neuron cell bodies .
A&P 2 Module 1-7:BIOD 152 Anatomy &
Physiology:BIOD 152 Module:BIOD 152 Final
Exam: Questions & Answers: Latest Updated
A+ Score Solutions(Everything You need)
BIOD 152 A&P 2 Module 1–7 & Final Exam Package
Verified Questions & Answers | Latest 2026/2027 Update | Graded A+
MODULE 1: NERVOUS SYSTEM ORGANIZATION & ACTION POTENTIALS
1. The dorsal root of a nerve contains what type of neurons?
• A) Motor / Efferent
• B) Sensory / Afferent
• C) Interneurons
• D) Both motor and sensory neurons
Answer: B. Sensory / Afferent
Rationale: The dorsal root contains sensory (afferent) neurons that bring
information from the periphery into the spinal cord, whereas the ventral root
contains motor (efferent) neurons that send signals from the spinal cord to
muscles .
,2. This part of the autonomic system accelerates the heartbeat and increases
breathing rate.
• A) Parasympathetic nervous system
• B) Sympathetic nervous system
• C) Somatic nervous system
• D) Enteric nervous system
Answer: B. Sympathetic nervous system
Rationale: The sympathetic nervous system is responsible for the "fight or flight"
response, which includes increased heart rate and respiratory rate. The
parasympathetic system slows these functions .
3. 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.
Answer: Depolarization: Sodium gates open allowing sodium ions (Na⁺) to rush
into the neuron. The membrane potential rapidly rises from the resting state (-
70mV) up past zero to approximately +40mV. This phase initiates the action
potential as the inside of the membrane becomes positively charged compared to
the outside .
4. This part of a neuron conducts nerve impulses towards the cell body.
• A) Axon
• B) Dendrites
• C) Synaptic terminals
• D) Myelin sheath
Answer: B. Dendrites
,Rationale: Dendrites receive electrical signals from other neurons and conduct
these impulses toward the neuron's cell body .
5. A neuron going to the bicep of the forearm is part of the:
• A) Central nervous system only
• B) Peripheral nervous system only
• C) Central nervous system and autonomic nervous system
• D) Somatic nervous system
Answer: D. Somatic nervous system
Rationale: Neurons controlling skeletal muscles, such as the bicep, are typically
part of the somatic nervous system, a division of the PNS responsible for voluntary
movement .
6. The neuron pictured is best described as:
• A) Multipolar
• B) Bipolar
• C) Unipolar
• D) Anaxonic
Answer: B. Bipolar
Rationale: Bipolar neurons have two processes: one dendrite and one axon. They
are often found in sensory pathways such as the retina and olfactory mucosa .
7. True or False: Neurons do not physically touch one another.
• A) True
, • B) False
Answer: A. True
Rationale: Neurons are separated by a synaptic cleft, a small gap through which
neurotransmitters pass to transmit signals chemically rather than through direct
physical contact .
8. Describe the function and release of neurotransmitters.
Answer: Neurotransmitters are chemicals stored within secretory vesicles (axon
terminal vesicles) at the end of axon terminals. When an action potential reaches
the axon terminal, it triggers calcium influx that causes the vesicles to fuse with
the presynaptic membrane, releasing neurotransmitters into the synaptic cleft.
These chemical messengers bind to receptors on the postsynaptic neuron or
muscle fiber to continue or modulate the nerve impulse .
9. An afferent neuron carries information:
• A) From the central nervous system to the periphery
• B) From the periphery to the central nervous system
• C) Between two neurons in the CNS
• D) From the autonomic nervous system to muscles
Answer: B. From the periphery to the central nervous system
Rationale: Afferent neurons carry sensory information from sensory receptors
toward the CNS .
10. What is the location and function of Satellite cells?
Answer: Location: peripheral nervous system (PNS). Function: Regulation of
environment of neuron cell bodies .
