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Locomotion and Movement — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYLocomotion and Movement3 Marks
Question
  1. Name the bones of pectoral giodle.
  2. Give an example of fibrous joint.
  3. What is the role of $\mathrm{Ca}^{2+}$ (calcium ions) in muscle DE contraction?
✓

Answer

  1. Clavicle and scapula.
  2. Between skull bones.
  3. Role of $\mathrm{Ca}^{2+}$ (calcium ions).
$\mathrm{Ca}^{2+}$​​​​​​​ ions bind to a subunit of troponin and unmask the active site on actin for binding of myosin, to form actin myosin bridge.

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