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Questions and Answers
What enzyme breaks down acetylcholine in the synaptic cleft?
What enzyme breaks down acetylcholine in the synaptic cleft?
- Acetylcholine oxidase
- Acetylcholinesterase (correct)
- Acetylcholine kinase
- Acetyltransferase
In what step does acetylcholine degrade at the neuromuscular junction?
In what step does acetylcholine degrade at the neuromuscular junction?
- Step 6 (correct)
- Step 5
- Step 4
- Step 3
What happens when acetylcholine binds to its receptor on the ion channel?
What happens when acetylcholine binds to its receptor on the ion channel?
- Ion channel shrinks in size
- Ion channel opens and allows ions to pass (correct)
- Acetylcholine breaks down immediately
- Ion channel closes stopping ion passage
Which enzyme is involved in ending the effects of acetylcholine?
Which enzyme is involved in ending the effects of acetylcholine?
What is the role of acetylcholinesterase in the breakdown of acetylcholine?
What is the role of acetylcholinesterase in the breakdown of acetylcholine?
What happens to ions when acetylcholine is degraded at the neuromuscular junction?
What happens to ions when acetylcholine is degraded at the neuromuscular junction?
Which muscle is the prime mover of plantar flexion in the lower limb?
Which muscle is the prime mover of plantar flexion in the lower limb?
Which muscle is known as the 'toe dancers' muscles due to its involvement in plantar flexion?
Which muscle is known as the 'toe dancers' muscles due to its involvement in plantar flexion?
Which muscle group is primarily responsible for foot eversion in the lower limb?
Which muscle group is primarily responsible for foot eversion in the lower limb?
What muscle is crucial for toe extension and dorsiflexion of the foot?
What muscle is crucial for toe extension and dorsiflexion of the foot?
Which muscle group is responsible for both dorsiflexion and foot inversion in the lower limb?
Which muscle group is responsible for both dorsiflexion and foot inversion in the lower limb?
What muscle is involved in both plantar flexion and foot eversion?
What muscle is involved in both plantar flexion and foot eversion?
What is the primary function of the sarcoplasmic reticulum in a skeletal muscle cell?
What is the primary function of the sarcoplasmic reticulum in a skeletal muscle cell?
Which term refers to the ability of muscle cells to be stretched?
Which term refers to the ability of muscle cells to be stretched?
What is the zone within the A band of a skeletal muscle that lacks actin filaments?
What is the zone within the A band of a skeletal muscle that lacks actin filaments?
Which term refers to the responsiveness of a muscle cell to a stimulus?
Which term refers to the responsiveness of a muscle cell to a stimulus?
What is composed of one motor neuron and all the skeletal muscle cells it stimulates?
What is composed of one motor neuron and all the skeletal muscle cells it stimulates?
What serves as the final go signal for muscle contraction?
What serves as the final go signal for muscle contraction?
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