,BIOD 151 Module 5 | Practice Q&A | 2026/2027 | Anatomy | Portage
Learning
1. The central nervous system (CNS) consists of which structures?
A) Brain and spinal cord
B) Brain and cranial nerves
C) Spinal cord and peripheral nerves
D) Cranial nerves and spinal nerves
Correct Answer: Brain and spinal cord
Rationale: The central nervous system consists of the brain and spinal cord.
The peripheral nervous system includes all nerves outside the CNS, including
cranial and spinal nerves . This organization is fundamental to understanding
nervous system function.
2. Messages sent from the CNS to a muscle are called:
A) Sensory input
B) Motor actions
C) Reflex arcs
D) Synaptic transmission
Correct Answer: Motor actions
Rationale: Motor actions are messages sent from the central nervous system
to a muscle to produce movement. Sensory input is information carried from
the external environment to the CNS . This distinction is essential for
understanding neural communication pathways.
3. Information carried from the external environment to the CNS is called:
,A) Motor action
B) Sensory input
C) Efferent signal
D) Synaptic transmission
Correct Answer: Sensory input
Rationale: Sensory input describes information carried by nerves from the
external environment to the central nervous system. Motor actions are
messages sent from the CNS to muscles. This distinction is fundamental to
understanding nervous system function .
4. Skeletal muscles are under what type of control?
A) Involuntary control
B) Conscious control
C) Autonomic control
D) Reflex control
Correct Answer: Conscious control
Rationale: Skeletal muscles are under conscious control, meaning a person
can consciously decide to use them to complete an action. Cardiac and
smooth muscles are under involuntary control . This distinction is essential
for understanding muscle tissue types.
5. Which of the following is NOT one of the three types of muscle tissue?
A) Skeletal
B) Cardiac
C) Smooth
, D) Epithelial
Correct Answer: Epithelial
Rationale: The three types of muscle tissue are skeletal, cardiac, and smooth.
Epithelial is a type of tissue that covers body surfaces and lines cavities, not
a muscle tissue type . This is a fundamental tissue classification concept.
6. What is the smallest biological unit of life?
A) Tissue
B) Organ
C) Cell
D) Molecule
Correct Answer: Cell
Rationale: The cell is the smallest biological unit of life. Tissues are groups of
similar cells, organs are made of tissues, and molecules are smaller than
cells. This is a foundational concept in biology and anatomy .
7. Which part of the neuron receives incoming signals?
A) Axon
B) Dendrite
C) Soma
D) Synapse
Correct Answer: Dendrite
Learning
1. The central nervous system (CNS) consists of which structures?
A) Brain and spinal cord
B) Brain and cranial nerves
C) Spinal cord and peripheral nerves
D) Cranial nerves and spinal nerves
Correct Answer: Brain and spinal cord
Rationale: The central nervous system consists of the brain and spinal cord.
The peripheral nervous system includes all nerves outside the CNS, including
cranial and spinal nerves . This organization is fundamental to understanding
nervous system function.
2. Messages sent from the CNS to a muscle are called:
A) Sensory input
B) Motor actions
C) Reflex arcs
D) Synaptic transmission
Correct Answer: Motor actions
Rationale: Motor actions are messages sent from the central nervous system
to a muscle to produce movement. Sensory input is information carried from
the external environment to the CNS . This distinction is essential for
understanding neural communication pathways.
3. Information carried from the external environment to the CNS is called:
,A) Motor action
B) Sensory input
C) Efferent signal
D) Synaptic transmission
Correct Answer: Sensory input
Rationale: Sensory input describes information carried by nerves from the
external environment to the central nervous system. Motor actions are
messages sent from the CNS to muscles. This distinction is fundamental to
understanding nervous system function .
4. Skeletal muscles are under what type of control?
A) Involuntary control
B) Conscious control
C) Autonomic control
D) Reflex control
Correct Answer: Conscious control
Rationale: Skeletal muscles are under conscious control, meaning a person
can consciously decide to use them to complete an action. Cardiac and
smooth muscles are under involuntary control . This distinction is essential
for understanding muscle tissue types.
5. Which of the following is NOT one of the three types of muscle tissue?
A) Skeletal
B) Cardiac
C) Smooth
, D) Epithelial
Correct Answer: Epithelial
Rationale: The three types of muscle tissue are skeletal, cardiac, and smooth.
Epithelial is a type of tissue that covers body surfaces and lines cavities, not
a muscle tissue type . This is a fundamental tissue classification concept.
6. What is the smallest biological unit of life?
A) Tissue
B) Organ
C) Cell
D) Molecule
Correct Answer: Cell
Rationale: The cell is the smallest biological unit of life. Tissues are groups of
similar cells, organs are made of tissues, and molecules are smaller than
cells. This is a foundational concept in biology and anatomy .
7. Which part of the neuron receives incoming signals?
A) Axon
B) Dendrite
C) Soma
D) Synapse
Correct Answer: Dendrite
