WorksheetsBIO 165 (NSU)_Muscle and Nervous_Exam Review_Fall 2025
Total questions: 117
Worksheet time: 2hrs 38mins
What is the role of neuroglia in nervous tissue?
Unable to regenerate
Support and protect neurons
Which type of muscle tissue is activated by the brain or hormones?
Nervous
Cardiac
What is a characteristic of skeletal muscle tissue?
Controlled by somatic nervous system
Contracts involuntarily
Which type of muscle tissue is striated and contracts involuntarily?
Cardiac
Smooth
What is the function of neurons in terms of impulse transmission?
Regenerate after injury
Pass impulses to other neurons, muscle fibers, or glands
Which type of muscle tissue contracts voluntarily?
Skeletal
Neuroglia
What is a characteristic of cardiac muscle tissue?
Contracts voluntarily
Striated and contracts involuntarily
Which type of muscle tissue is controlled by the somatic nervous system?
Skeletal
Smooth
Which type of muscle tissue is non-striated?
Smooth
Skeletal
The muscle tissue shown is called ______.
Cardiac
Smooth
Name the tissue
Cardiac muscle tissue
Skeletal muscle tissue
Striated muscle tissue
Smooth muscle tissue
Name this tissue
Cardiac muscle tissue
Skeletal muscle tissue
Striated stratified epithelial tissue
Smooth muscle tissue
Name this tissue
Cardiac muscle tissue
Non-striated muscle tissue
Smooth muscle tissue
Skeletal muscle tissue
What type of muscle makes up your heart?
Cardiac
Skeletal
Smooth
Canulary
Which muscle tissue would be responsible for chewing food?
Smooth
Skeletal
Cardiac
Vestibular
Which muscle tissue is located inside blood vessels?
Cardiac
Smooth
Skeletal
Vestibular
What type of muscle(s) is involuntary?
skeletal and smooth
cardiac and skeletal
smooth and cardiac
skeletal
What type of muscle lines the inside of the stomach?
cardiac
skeletal
smooth
Muscle contraction phase 1: Reorder these events leading to muscle contraction in their chronological order:
Acetylcholine is released from the motoneuron
Depolarization of the sarcolema
Opening of voltage-gated calcium chanels
Calcium exit the sarcoplasmic reticulum
cytosolic Calcium initiate myosin attaching to actin filaments.
Muscle contraction phase 2: Reorder these events leading to muscle contraction in their chronological order:
Calcium is released from sarcoplasmic reticulum into the cytosol of the muscle cell
Calcium binds troponin
Tropomyosin is released from actin filaments
the myosin binding sites are now free to bind to myosin
myosin binds to actin
Muscle contraction phase 3 : Reorder these events leading to muscle contraction in their chronological order (start with iP release):
inorganic phosphate (iP) is released from the myosin head
myosin head binds strongly to actin and power stroke occurs
ADP is released fro myosin head and and ATP replaces it
Myosin detaches from actin
hydrolysis of ATP into ADP and iP and re-cocking of the myosin lever arm
Which events are necessary for terminating a muscle contraction?
Stop of the release of acetylcholine from the motoneuron
re-uptake or destruction of acetylcholine released earlier
re-uptake of Calcium into the sarcoplasmic reticulum
the troponin-tropomyosin complex attaches to the actin filament
ATP is hydrolyzed
What would happen if you blocked the function of Acetylcholine at the neuromuscular junction?
paralysis
tetanus (on-going contraction of the muscle)
cramp (quick uncontrolled muscles
___are regulatory proteins that cover the myosin binding site on the actin.
troponin-tropomyosin
sarcomere
sarcolemma
sarcoplasmic reticulum
Which thin filament protein bind to Ca during muscle contraction?
Actin
Myosin
Troponin
Tropomyosin
Click all that apply. Which of these make up a motor unit?
Motor neuron
Muscle fiber
Muscle
Nerve
Which muscle characteristic allows the muscle to return to resting length after contraction?
Contractility
Excitability
Extensibility
Elasticity
What is the name of the plasma membrane surrounding each muscle fiber?
T Tubule
Sarcolemma
Sarcoplasm
Nucleus
What is the contractile unit of the muscle?
Z disk
Sarcomere
Muscle fiber
Muscle cell
What protein makes up the thick filaments?
Troponin
Tropomyosin
Myosin
Actin
What part of the muscle fiber stores Ca ions and releases them when stimulated?
T tubule
Sarcolemma
Nucleus
Sarcoplasmic reticulum
What is the name of the location where the neuron and muscle fiber meet?
Sarcoplasm
Sacolemma
Neuromuscular junction
Axon terminal
What is the name of the neurotransmitter that is released from the neuron to the sarcolemma?
Acetylcholine
Acetone
ATP
Calcium
Which of these occurs first during a muscle contraction?
The nerve signal reaches the neuromuscular junction
Ach is released and opens Na ion channels
The sarcomere shortens
The myosin binds to the actin
All of the following are 3 ways to generate ATP except
Actin
Cellular respiration
Fermentation
Creatine phosphate breakdown
What is the contractile unit of the muscle?
Z disk
Sarcomere
Muscle fiber
Muscle cell
Which of these occurs first during a muscle contraction?
The nerve signal reaches the neuromuscular junction
Ach is released and opens Na ion channels
The sarcomere shortens
The myosin binds to the actin
What binds to the Myosin Head to cause it to detach from the Actin?
ATP
ADP
CNS
ETC
The condition in which a muscle remains contracted between stimuli without relaxing is called
recruitment.
tetanus.
the all-or-none response.
a motor unit.
the lag phase.
Creatine Phosphate:
is produced by the process of anaerobic respiration.
can replace ATP in binding myosin molecules during contraction.
acts as an energy reserve in muscle tissue.
is only formed during strenuous exercise.
All of these are correct.
Aerobic respiration:
requires oxygen
breaks down glucose
produces ATP, CO2, and H2O
takes place in mitochondria located within the muscle fiber
All of these are true of aerobic respiration
In a neuromuscular junction,
the presynaptic terminal is separated from the postsynaptic terminal by the synaptic cleft.
the presynaptic terminal contains vesicles filled with sodium ions.
the presynaptic terminal contains receptor molecules for the neurotransmitter.
the neurotransmitter causes an action potential in the presynaptic terminal.
All of these conditions occur.
Once the action potential reaches the motor neuron axon terminal, what happens?
The muscle contracts
ACh is released into the synaptic cleft.
Sodium pumps into the sarcolemma.
The muscle contracts.
What causes the action potential to start in the muscle fiber?
Acetylcholine binds to the Na+ channel
Acetylcholine binds to the synaptic vesicles
the Ca2+ channels open
The action potential is generated in the muscle cell
sarcomere
myofilament
sarcolemma
sarcoplasm
Which type of signaling mechanism is chemical and is used to communicate between cells?
Sensory Signal
Neurotransmitter
Graded Potential
Action Potential
What is the function of Schwann cells?
Conduct impulses
Phagocytosis
Make up the myelin sheath
Slow conduction
What is the role of calcium in smooth muscles?
calcium binds to troponin to remove tropomyosin
calcium allows myosin and atp to bind
calcium bind to and activates calmodulin
calcium binds to sarcolemma receptors to initate sarcolemmal action potential
What cell from the nervous system transmits electrical signals
neuroglia
Satellite cells
neuron
Schwann cells
Curare is a plant-derived poison, traditionally used by indigenous people of South America for arrows and blowguns. When injected, curare reversibly prevents acetylcholine from binding to its receptor at the sarcolemma.
This will:
Prevent muscle contraction.
Cause uncontrolled muscle contraction.
Be more deadly than the Five Point Palm Exploding Heart Technique
Cause hyperventilation.
Acetylcholinesterase is an enzyme that breaks down acetylcholine at the neuromuscular junction. Acetylcholinesterase is important for
generating a sarcolemmal action potential
Starting muscle contraction
Both A and B
Ending muscle contraction.
The central nervous system consists of
spinal nerves and brain
cranium and spine
cranial nerves and spinal nerves
brain and spinal cord
What is the enzyme that breaks down excess acetylcholine (ACh) in the synapse?
Acetylcholinerase
Acetylcholinesterase
Acetic acid
Choline
The nervous system is divided into 2 types. The (a) nervous system consists of the (b) and spinal cord. The (c) nervous system consists of (d) .
The neuron has short, branched parts called
Axon
Dendrites
Nucleus
Nerve Cells
The nervous tissue is responsible for ____.
to produce a contraction that changes both the length and the shape of the cell.
It is responsible for coordinating and controlling many body activities
transport oxygen from the lungs to the tissues
______ is composed of Nervous Tissue.
Lungs
Brain
Eyes
Heart
The neuron has a single long-part called the ___.
Dendrites
Nerve fibers
Axon
Nerve Endings
Nerve impulse enables animals to move rapidly in response to ____.
Body parts
Myelin Sheath
Stimuli
Cytoplasm
A neuron consists of a ______ which comprises of Nucleus and Cytoplasm.
Nerve
Cell body
Nucleus
Spinal Cord
Which muscle type has intercalated discs?
Cardiac muscle.
Skeletal muscle.
Smooth muscle.
The __ nervous system carries impulses from the central nervous system to the heart and other organs.
cerebral
somatic
muscular
autonomic
consists of sensory and motor neurons that transmit information to and from the central nervous system
Central nervous system
Cerebrum
Peripheral nervous system
Medulla oblongata
part of the peripheral nervous system that transmits impulses to and from skin and skeletal muscles
Somatic nervous system
Hypothalamus
Autonomic nervous system
Sympathetic nervous system
branch of the autonomic nervous system that controls organs and is most active during emergencies or stress
Somatic nervous system
Hypothalamus
Autonomic nervous system
Sympathetic nervous system
The (a) part of the autonomic nervous system is active during resting and digesting
Match the following glial cells with their functions
Ependymal cells
Create, secrete and circulate cerebrospinal fluid
Oligodendrocytes
Produce the myelin sheath in the CNS
Astrocytes
Exchange materials between neurons and capillaries
Microglia
Immune defence against invading microorganisms
Schwann cells
Produce the myelin sheath in the PNS
Motor/efferent
Motor/afferent
Sensory/afferent
Sensory/efferent
Type of neuron located only in the brain and spinal cord that pass impulses from one neuron to another.
Motor Neuron
Interneuron
Sensory Neuron
What type of neuron is A?
Sensory
Inter
Motor
What type of neuron is C?
Sensory
Inter
Motor
Name an effector in this diagram.
A
B
D
E
F
In a reflex arc, the sensory neuron leads to the ___________ and the motor neuron leads to the __________
Spinal cord, CNS
CNS, muscle
Spinal cord, muscle
Muscle, CNS
Which type of neuron causes a muscle to contract in a reflex arc?
Motor Neuron
Sensory Neuron
Interneuron
Effector
In a reflex arc, the sensory neuron leads to the ___________ and the motor neuron leads to the __________
Spinal cord, CNS
CNS, muscle
Spinal cord, muscle
Muscle, CNS
Which type of neuron causes a muscle to contract in a reflex arc?
Motor Neuron
Sensory Neuron
Interneuron
Effector
Drag and drop the labels.
What receptor reacts to physical forces?
Chemoreceptor
Mechanoreceptor
Electroreceptor
Thermoreceptor
Which cranial nerve functions in balance and hearing?
VIII Vestibulocochlear
IX Glossopharyngeal
XI Accessory
V Trigeminal
Which cranial nerve is known as the "mixed nerve"? It controls Blinking (ophthalmic portion) and maxilla & mandible sensation.
IV Trochlear
XI Accessory
V Trigeminal
VII Facial
Which cranial nerve is for smelling?
I Olfactory
IV Trochlear
IX Glossopharyngeal
VIII Vestibulocochlear
Which cranial nerve brings visual information into the brain?
I Olfactory
III Oculomotor
IV Trochlear
II Optic
Which cranial nerve controls the scalp, facial muscles (for expressions) and taste information?
IV Trochlear
VII Facial
V Trigeminal
XI Accessory
Organize each cranial nerve by type:
Olfactory
Optic
Oculomotor
Trochlear
Trigeminal
Abducens
Facial
Vestibulocochlear
Glossopharyngeal
Vagus
Spinal Accessory
Hypoglossal
Match the following receptors with the the type of sensory information they detect:
Thermoreceptors
Temperature
Proprioceptors
Where the body is in space
Nociceptor
Pain
Mechanoreceptor
Tactile stimulus
Action potentials run along the ______ from ______ to ________.
axon, dendrites, axon terminals
axon, axon terminals, dendrites
dendrites, axon, axon terminals
axon terminals, axon, dendrites
Which of the following is involved in maintaining the resting membrane potential of neurons?
Na+/K+ ATPase pump moves 3Na+ in for every 2K+ out
Na+/K+ ATPase pump moves 3K+ in for every 2Na+ out
Na+/K+ ATPase pump moves 3Na+ out for every 2K+ in
Na+/K+ ATPase pump moves 3K+ out for every 2Na+ in
At resting membrane potential, neurons have more (a) on the outside of the cell membrane.
At resting membrane potential, neurons have more (a) on the inside of the cell membrane.
hyperpolarization
depolarization
repolarization
polarization
Which number on the graph represents the threshold potential?
1
2
3
4
6
When the membrane potential reaches +30mV, ________ channels open, ________ occurs, and ________ channels close.
sodium, depolarization, potassium
potassium, depoloarization, sodium
sodium, repolarization, potassium
postassium, repolarization, sodium
An electrical impulse within a single neuron is called a
synapse
membrane potential
action potential
cell body
When is the potassium channel open?
during rest only
during repolarization only
during depolarization only
all the time
Reorder the following (starting at beginning)
Resting potential (-70mV), stimulus received
Na+ gates open, threshold reached (-55 mV)
Na+ gates open
Na+ moves into the axon
Action potential reached (+30mV)
Reorder the following (starting at the action potential)
Action potential reached (+30mV)
Na+ inactivation gates close, K+ gates open
K+ exits the cell, repolarization
K+ still open, goes below -70 mV, hyperpolarization
Na/K pump restores to resting potential
Why is the speed of an impulse increased if a neurone is wrapped in myelin?
potassium ions flow out of the neurone faster
myelin insulates the neurone so the temperature increases
the impulse can jump from node to node
it allows neurones to touch each other
Potassium channels open and potassium ions diffuse out the neuron.
