Podcast
Questions and Answers
What is the main role of titin in the sarcomere?
What is the main role of titin in the sarcomere?
- Generates ATP for muscle contraction
- Anchors actin to the Z-disc (correct)
- Facilitates calcium binding to actin
- Regulates myosin-actin interaction
Which protein is critical for the regulation of calcium release from the sarcoplasmic reticulum during muscle contraction?
Which protein is critical for the regulation of calcium release from the sarcoplasmic reticulum during muscle contraction?
- Dystrophin
- Troponin (correct)
- Tropomyosin
- Nebulin
What is the function of 'T-tubules' in muscle cells?
What is the function of 'T-tubules' in muscle cells?
- Conduction of action potentials deep into the muscle cell (correct)
- Anchoring myosin to the Z-disc
- Generation of ATP for energy production
- Storage of calcium ions for muscle contraction
Which process describes the transfer of a signal from a motor neuron to a muscle cell?
Which process describes the transfer of a signal from a motor neuron to a muscle cell?
What is the primary function of the sarcoplasmic reticulum in muscle cells?
What is the primary function of the sarcoplasmic reticulum in muscle cells?
Which protein is responsible for tethering actin to the Z-disc and maintaining sarcomere structure?
Which protein is responsible for tethering actin to the Z-disc and maintaining sarcomere structure?
What is the role of tropomyosin in muscle contraction?
What is the role of tropomyosin in muscle contraction?
What protein binds to actin, tropomyosin, and calcium in muscle cells?
What protein binds to actin, tropomyosin, and calcium in muscle cells?
Which structure stores calcium ions in muscle cells and releases them upon stimulation?
Which structure stores calcium ions in muscle cells and releases them upon stimulation?
What is the primary function of T-tubules in muscle cells?
What is the primary function of T-tubules in muscle cells?
Which molecule is responsible for breaking down acetylcholine at the neuromuscular junction?
Which molecule is responsible for breaking down acetylcholine at the neuromuscular junction?
What process occurs when calcium binds to TnC in muscle cells?
What process occurs when calcium binds to TnC in muscle cells?
Which protein is responsible for regulating the ATPase activity of myosin?
Which protein is responsible for regulating the ATPase activity of myosin?
What causes sarcomeres to shorten and muscles to contract in the presence of ATP?
What causes sarcomeres to shorten and muscles to contract in the presence of ATP?
