CAIE A-Level Biology 15.1.10 Stimulation of Muscle Contraction
Practise tracing excitation from the neuromuscular junction through T-tubules to calcium release by the sarcoplasmic reticulum.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- A2
Exam points
- sequence acetylcholine release, sarcolemma depolarisation and T-tubule excitation
- explain how the sarcoplasmic reticulum releases Ca²⁺ that binds to troponin
- link ATP supply to neurotransmitter release, calcium pumping and cross-bridge cycling
