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WorksheetsMuscles review
Total questions: 43
Worksheet time: 27mins
When you smile you contract this muscle.
Masseter
Orbicularis Oris
Zygomaticus
Buccinator
Which muscle is the main muscle of mastication?
Masseter
Temporalis
Buccinators
Zygomaticus
After this test, everyone whistled with relief. What muscle (or group) is used to whistle?
buccinators
Orbicularis Oris
Orbicularis Oculi
Masseter
May is a Ballet dancer. What muscle (or group) allows her to stand on her toes?
Sartorius
Gluteus Maximus
Hamstrings
Gastrocnemius
Alyssa is superb volleyball player, and she is getting ready to spike the ball over the net. What is the main muscle (or group) that she will use to rotate her arm to spike the ball?
Trapezius
Pectoralis Major
Rotator Cuff
Frontalis
Which muscle would you contract to wink?
Orbicularis Oculi
Orbicularis Oris
Temporalis
Frontalis
Name the group of muscles that would allow you to hold a basketball between your knees?
Adductors
Quadriceps
Hamstrings
Rotator Cuff
When this muscle contracts on only one side of the body it causes you to turn your head.
Sternocleidomastoid
Trapezius
External Oblique
Rhomboid
Skeletal muscle is stimulated to contract by a nerve impulse. When a nerve impulse reaches the target muscle, a series of events occur at the neuromuscular junction. One of those events is the release of the neurotransmitter acetylcholine into the neuromuscular junction.
Which of the following describes what happens when acetylcholine is released into the neuromuscular junction?
Calcium ions are released into the synapse.
Potassium ions will enter the muscle cell from the synapse.
Acetylcholine will attach to sodium channels on the end of the neuron causing depolarization of the neuron.
Acetylcholine will attach to sodium channels on the sarcolemma causing depolarization of the sarcolemma.
When comparing structures of the human body, which of the following is analogous to the myoneural junction?
synapse between bone and neuron
synapse between muscle and muscle
synapse between muscle and bone
synapse between neuron and neuron
Botulinum toxin, produced by the bacterium Clostridium botulinum, blocks exocytosis of synaptic vesicles at the neuromuscular junction. A small amount of the toxin can be lethal when respiratory muscles do not contract. What is not released from the synaptic vesicle, and as result of its absence, what event does not occur?
acetylcholine, ACh; ion channels open at motor end plate
calcium ions, Ca 2+; binding to troponin changing the shape of actin
potassium ion, K +; voltage-gated channels open
sodium ions, Na +; triggers a muscle action potential
What is the desired effect when acetylcholine crosses the synapse of a myoneural junction?
Acetylcholine attaches to receptors on the bone.
Acetylcholine attaches to receptors on the next neuron.
Acetylcholine attaches to receptors on the sarcolemma.
Nothing, serotonin is the neurotransmitter that crosses a myoneural junction.
Smooth muscle contractions resemble skeletal muscle contractions in a number of ways. The action at the neuromuscular junction is similar. Which of the following notes the differences?
Skeletal and smooth muscle use acetylcholine and are excitatory
Smooth muscle also uses norepinephrine and is slower to contract and relax.
Skeletal muscle uses acetylcholine and can maintain a forceful contraction longer with a given amount of ATP
Smooth muscle is slower to contract and relax and acetylcholinesterase is present on the membranes of the motor end plate.
A neuromuscular junction includes the synaptic end bulb of a motor neuron on one side of the synaptic cleft and the motor end plate of the muscle fiber on the other side. What is the neurotransmitter that is released from the synaptic end bulb, and what is the neurotransmitter receptor on the motor end plate?
acetylcholine, ACh; acetycholine receptor
calcium ion, Ca 2+; ligand-gated ion channel
sodium ion, Na +; sodium ion , Na +, channel
potassium ion, K +; voltage-gated Ca 2+channel
Skeletal muscle fibers contract at the signal of a nerve impulse. What is the name for the nerve impulse, and what is the end result?
acetylcholine receptors; release of Na + ions to bind with toponin and expose the binding sites for myosin
action potential; release of Ca + ions to bind with troponin and expose the binding sites for myosin
activation; release of Ca + ions to diffuse across the synatic cleft
sliding filament model; release of Ca + ions to diffuse across the synatic cleft
The anti-aging chemical onabotulinumtoxinA used in BOTOX® treatments prevents the neutrotransmitter acetylcholine from attaching to the sarcolemma. Which of the following could be expected to happen when receiving BOTOX® treatments?
The muscle cells will not contract at all.
The neurotransmitter will be destroyed.
The muscle cells will contract continuously.
Acetylcholine will not recycle into the synapse.
Communication between the CNS and muscles occurs at the neuromuscular junction. The signal for the muscle to contract occurs across a synapse. Which of the following set of events correctly identifies that sequence?
activation of acetylcholine receptors -> release of acetylcholine -> termination of acetylcholine receptors -> production of muscle action potential
production of muscle action potential -> activation of acetylcholine receptors -> release of acetylcholine -> termination of acetylcholine activity
release of acetylcholine -> termination of acetylcholine activity -> production of muscle action potential -> activation of acetylcholine receptors
release of acetylcholine -> activation of acetylcholine receptors -> production of muscle action potential -> termination of acetylcholine activity
Curare is a plant derivative used by South American Indians on arrows and blowgun darts to cause muscle paralysis. Neostigmine is used as an antidote for curare poisoning. It belongs to a family of chemicals called anticholinesterase agents. The poison acts at the neuromuscular junction. What would the antidote's action be, and what would be the immediate consequence?
It would break down acetylcholine, ACh; ion channels do not open.
It would break down sodium ions, Na +; no a muscle action potential.
It would block the release of acetylcholine, ACh; delays closing of ion channels.
It would bind with calcium ions, Ca 2+; stop binding to troponin changing the shape of actin.
If the synapse above is flooded with a chemical that attaches to and opens sodium channels, which of the following could be expected to happen?
The muscle cell would not contract at all.
The muscle cell will contract continuously.
The neurotransmitter would be destroyed.
The neurotransmitter would not be released.
What is the correct organizational sequence for the transmission of nerve impulses to the muscle?
1. Sarcolemma becomes permeable to sodium (Na+).
2. Neurotransmitter attaches to receptors on the sarcolemma.
3. Acetylcholine is released by nerve upon arrival of nerve impulse.
1, 2, 3
1, 3 ,2
3 ,1, 2
3 ,2, 1
Skeletal muscle is stimulated to contract by a nerve impulse. When a nerve impulse reaches the target muscle, a series of events occur at the neuromuscular junction. One of those events is the release of the neurotransmitter acetylcholine into the neuromuscular junction.
What affect does acetylcholine have on the muscle cell when released into the neuromuscular junction?
The neurotransmitter prevents the muscle from contracting.
The sarcolemma will release calcium ions into the synapse through sodium channels.
Sodium channels will open allowing an influx of sodium ions through the sarcolemma.
The neurotransmitter causes the muscle cell to release ATP into the synapse causing the muscle to move.
Another name for a striated muscle cell.
Fiber
Sacrolemma
Sacromere
Fascicle
