The roof of the cranium of frog is formed by:
Correct answer: A. Frontoparietal
- A. Frontoparietal
- B. Orbitosphenoid
- C. Parasphenoid
- D. Alisphenoid
Explanation
Frontoparietals are a pair of long, broad, flattened and membranous bones. They are united along the mid-dorsal line and form the whole roof of cranium. In a larval frog, each frontoparietal occurs into separate frontal and parietal parts, but in an adult frog, they become fused to form a single frontoparietal. The entire floor of cranium is covered and strengthened by a large parasphenoid bone.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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