BIOS 252: Practice Questions | Questions with 100%
Verified Answers | Latest Update 2026/2027
Question: What lever class has the fulcrum situated between the force and the load?
Fourth-class lever Third-class lever First-class lever Fifth-class lever Second-class
lever
Answer: First-class lever
Question: Which of the following helps an agonist work? A fixator An insertion An antagonist
Prime mover A synergist
Answer: A synergist
Question: Which of the following is a prime mover in head flexion? Deltoid
Sternocleidomastoid Corrugator supercilii Masseter Occipitofrontalis
Answer: Sternocleidomastoid
Question: Which element is important in directly triggering contraction? Calcium (Ca++)
Sodium (Na+) Potassium (K+) Chloride (Cl-) Proteins
Answer: Calcium (Ca++)
Question: Thin and thick filaments are organized into functional units called sarcolemma
myofibrils t-tubules sarcomeres myofilaments
Answer: myofilaments
Question: Cardiac muscles differ from skeletal muscles in that they contain intercalated discs
contain mitochondria utilize aerobic metabolism contain myofibrils are striated
Answer: contain intercalated discs
Question: Which connective tissue surrounds the entire muscle and separates it from
surrounding tissues? Endomysium Fascia Epimysium Epineurium Perimysium
Answer: Epimysium
Question: Match the following terms with their corresponding descriptions.
Answer: The fundamental structural and functional unit of the nervous system, responsible for
transmitting and processing information. - Neuron
Question: - The fundamental structural and functional unit of the nervous system, responsible
for transmitting and processing information.
Answer: Branch-like extensions of a neuron that receive signals from other neurons or sensory
receptors.- Dendrite
, Question: - Branch-like extensions of a neuron that receive signals from other neurons or
sensory receptors. - The main output structure of a neuron, responsible for
Answer: The main output structure of a neuron, responsible for transmitting electrical signals
away
from the cell body. - Axon
Question: transmitting electrical signals away from the cell body. - Specialized junction where
a neuron communicates with another neuron or a target cell. - Synapse - Neuron -
Axon - Dendrite
Answer: Specialized junction where a neuron communicates with another neuron or a target
cell. -
Synapse
Question: The myelin sheath is formed by oligodendrocytes in the peripheral nervous system
and Schwann cells in the central nervous system. True False
Answer: False
Question: Which type of ion channel opens in response to a change in membrane potential
and is responsible for generating action potentials? Voltage-gated channel
Chemically-gated channel Ligand-gated channel Leak channel Mechanically-gated
channel
Answer: Voltage-gated channel
Question: Label the neuron
Answer: Dendrites
Telodendrions
Axon
Cell body (soma)
Axon hillock
Question: Saltatory conduction refers to the propagation of action potentials along myelinated
axons. What is the significance of this mode of conduction? - It decreases the
likelihood of synaptic transmission. - It allows for faster conduction of action
potentials. - It decreases the threshold potential required to initiate an action
potential. - It enhances spatial summation. - It increases the refractory period of
neurons.
Answer: It allows for faster conduction of action potentials.
Question: The organization of the nervous system involves two main divisions. Which of the
following correctly identifies these divisions? - Central and peripheral nervous
systems - Sensory and motor nervous systems - Cerebral cortex and cerebellum -
Autonomic and somatic nervous systems - Sympathetic and parasympathetic
nervous systems
Answer: Central and peripheral nervous systems
Verified Answers | Latest Update 2026/2027
Question: What lever class has the fulcrum situated between the force and the load?
Fourth-class lever Third-class lever First-class lever Fifth-class lever Second-class
lever
Answer: First-class lever
Question: Which of the following helps an agonist work? A fixator An insertion An antagonist
Prime mover A synergist
Answer: A synergist
Question: Which of the following is a prime mover in head flexion? Deltoid
Sternocleidomastoid Corrugator supercilii Masseter Occipitofrontalis
Answer: Sternocleidomastoid
Question: Which element is important in directly triggering contraction? Calcium (Ca++)
Sodium (Na+) Potassium (K+) Chloride (Cl-) Proteins
Answer: Calcium (Ca++)
Question: Thin and thick filaments are organized into functional units called sarcolemma
myofibrils t-tubules sarcomeres myofilaments
Answer: myofilaments
Question: Cardiac muscles differ from skeletal muscles in that they contain intercalated discs
contain mitochondria utilize aerobic metabolism contain myofibrils are striated
Answer: contain intercalated discs
Question: Which connective tissue surrounds the entire muscle and separates it from
surrounding tissues? Endomysium Fascia Epimysium Epineurium Perimysium
Answer: Epimysium
Question: Match the following terms with their corresponding descriptions.
Answer: The fundamental structural and functional unit of the nervous system, responsible for
transmitting and processing information. - Neuron
Question: - The fundamental structural and functional unit of the nervous system, responsible
for transmitting and processing information.
Answer: Branch-like extensions of a neuron that receive signals from other neurons or sensory
receptors.- Dendrite
, Question: - Branch-like extensions of a neuron that receive signals from other neurons or
sensory receptors. - The main output structure of a neuron, responsible for
Answer: The main output structure of a neuron, responsible for transmitting electrical signals
away
from the cell body. - Axon
Question: transmitting electrical signals away from the cell body. - Specialized junction where
a neuron communicates with another neuron or a target cell. - Synapse - Neuron -
Axon - Dendrite
Answer: Specialized junction where a neuron communicates with another neuron or a target
cell. -
Synapse
Question: The myelin sheath is formed by oligodendrocytes in the peripheral nervous system
and Schwann cells in the central nervous system. True False
Answer: False
Question: Which type of ion channel opens in response to a change in membrane potential
and is responsible for generating action potentials? Voltage-gated channel
Chemically-gated channel Ligand-gated channel Leak channel Mechanically-gated
channel
Answer: Voltage-gated channel
Question: Label the neuron
Answer: Dendrites
Telodendrions
Axon
Cell body (soma)
Axon hillock
Question: Saltatory conduction refers to the propagation of action potentials along myelinated
axons. What is the significance of this mode of conduction? - It decreases the
likelihood of synaptic transmission. - It allows for faster conduction of action
potentials. - It decreases the threshold potential required to initiate an action
potential. - It enhances spatial summation. - It increases the refractory period of
neurons.
Answer: It allows for faster conduction of action potentials.
Question: The organization of the nervous system involves two main divisions. Which of the
following correctly identifies these divisions? - Central and peripheral nervous
systems - Sensory and motor nervous systems - Cerebral cortex and cerebellum -
Autonomic and somatic nervous systems - Sympathetic and parasympathetic
nervous systems
Answer: Central and peripheral nervous systems
