BIOD 151 Essential Human Anatomy &
Physiology I with Lab | 2025/2026 Portage
Learning Version | Module 6 Exam with Verified
Answers
Portage Learning BIOD 151 | Core Anatomy & Physiology Concepts, Lab Practical, Module
Assessments | Real Exam-Style Questions & Verified Answers | Latest Course Update
Introduction
This comprehensive answer bank includes all 100 module and lab exam questions for BIOD 151
Module 6—based on the 2025/2026 Portage Learning edition. It covers the nervous system,
including neurons, brain structures, and lab-related identification and procedural knowledge.
Answer Format
All correct responses are clearly marked in bold and green, paired with concise rationales
where appropriate for key concepts and lab identification.
Module 6 Exam
100 Multiple-Choice Questions
Question 1
What is the primary function of the nervous system?
A) Nutrient absorption
B) Coordination and communication
C) Gas exchange
D) Muscle contraction
Rationale: The nervous system controls body functions.
Question 2
Which part of a neuron receives signals?
A) Axon
B) Dendrite
C) Cell body
D) Myelin sheath
Rationale: Dendrites collect incoming signals.
Question 3
True or False: The central nervous system includes the brain.
A) True
,B) False
Rationale: The brain and spinal cord form the CNS.
Question 4
What is the role of the myelin sheath?
A) Signal generation
B) Insulating axons
C) Nutrient absorption
D) Muscle contraction
Rationale: Myelin speeds nerve impulse conduction.
Question 5
Which ion is critical for action potential?
A) Calcium
B) Sodium
C) Potassium
D) Chloride
Rationale: Sodium influx initiates the action potential.
Question 6
What is the function of the synapse?
A) Muscle attachment
B) Transmitting signals between neurons
C) Energy production
D) Bone support
Rationale: Synapses allow neuron communication.
Question 7
True or False: The peripheral nervous system includes cranial nerves.
A) True
B) False
Rationale: Cranial nerves are part of the PNS.
Question 8
Which part of the brain controls balance?
A) Cerebrum
B) Cerebellum
C) Brainstem
D) Hypothalamus
Rationale: The cerebellum coordinates balance.
Question 9
What is the role of the neurotransmitter?
A) Bone growth
B) Transmitting signals across synapses
C) Muscle attachment
, D) Gas exchange
Rationale: Neurotransmitters carry signals.
Question 10
Which structure protects the spinal cord?
A) Cranium
B) Vertebral column
C) Rib cage
D) Pelvis
Rationale: Vertebrae encase the spinal cord.
Question 11
True or False: The autonomic nervous system is voluntary.
A) True
B) False
Rationale: It controls involuntary functions.
Question 12
What is the function of the node of Ranvier?
A) Signal generation
B) Speeding impulse conduction
C) Nutrient absorption
D) Muscle contraction
Rationale: Nodes enable saltatory conduction.
Question 13
Which part of the brain regulates heart rate?
A) Cerebellum
B) Medulla oblongata
C) Cerebrum
D) Thalamus
Rationale: The medulla controls vital functions.
Question 14
True or False: The somatic nervous system controls skeletal muscles.
A) True
B) False
Rationale: It governs voluntary movements.
Question 15
What is the role of the axon hillock?
A) Receiving signals
B) Initiating action potentials
C) Nutrient storage
D) Muscle attachment
Rationale: It integrates signals for firing.
Physiology I with Lab | 2025/2026 Portage
Learning Version | Module 6 Exam with Verified
Answers
Portage Learning BIOD 151 | Core Anatomy & Physiology Concepts, Lab Practical, Module
Assessments | Real Exam-Style Questions & Verified Answers | Latest Course Update
Introduction
This comprehensive answer bank includes all 100 module and lab exam questions for BIOD 151
Module 6—based on the 2025/2026 Portage Learning edition. It covers the nervous system,
including neurons, brain structures, and lab-related identification and procedural knowledge.
Answer Format
All correct responses are clearly marked in bold and green, paired with concise rationales
where appropriate for key concepts and lab identification.
Module 6 Exam
100 Multiple-Choice Questions
Question 1
What is the primary function of the nervous system?
A) Nutrient absorption
B) Coordination and communication
C) Gas exchange
D) Muscle contraction
Rationale: The nervous system controls body functions.
Question 2
Which part of a neuron receives signals?
A) Axon
B) Dendrite
C) Cell body
D) Myelin sheath
Rationale: Dendrites collect incoming signals.
Question 3
True or False: The central nervous system includes the brain.
A) True
,B) False
Rationale: The brain and spinal cord form the CNS.
Question 4
What is the role of the myelin sheath?
A) Signal generation
B) Insulating axons
C) Nutrient absorption
D) Muscle contraction
Rationale: Myelin speeds nerve impulse conduction.
Question 5
Which ion is critical for action potential?
A) Calcium
B) Sodium
C) Potassium
D) Chloride
Rationale: Sodium influx initiates the action potential.
Question 6
What is the function of the synapse?
A) Muscle attachment
B) Transmitting signals between neurons
C) Energy production
D) Bone support
Rationale: Synapses allow neuron communication.
Question 7
True or False: The peripheral nervous system includes cranial nerves.
A) True
B) False
Rationale: Cranial nerves are part of the PNS.
Question 8
Which part of the brain controls balance?
A) Cerebrum
B) Cerebellum
C) Brainstem
D) Hypothalamus
Rationale: The cerebellum coordinates balance.
Question 9
What is the role of the neurotransmitter?
A) Bone growth
B) Transmitting signals across synapses
C) Muscle attachment
, D) Gas exchange
Rationale: Neurotransmitters carry signals.
Question 10
Which structure protects the spinal cord?
A) Cranium
B) Vertebral column
C) Rib cage
D) Pelvis
Rationale: Vertebrae encase the spinal cord.
Question 11
True or False: The autonomic nervous system is voluntary.
A) True
B) False
Rationale: It controls involuntary functions.
Question 12
What is the function of the node of Ranvier?
A) Signal generation
B) Speeding impulse conduction
C) Nutrient absorption
D) Muscle contraction
Rationale: Nodes enable saltatory conduction.
Question 13
Which part of the brain regulates heart rate?
A) Cerebellum
B) Medulla oblongata
C) Cerebrum
D) Thalamus
Rationale: The medulla controls vital functions.
Question 14
True or False: The somatic nervous system controls skeletal muscles.
A) True
B) False
Rationale: It governs voluntary movements.
Question 15
What is the role of the axon hillock?
A) Receiving signals
B) Initiating action potentials
C) Nutrient storage
D) Muscle attachment
Rationale: It integrates signals for firing.
