IB Biology HL 3.3.5 Skeletons and Muscle Attachment Question Bank

Practise IB Biology HL 3.3.5 by explaining how muscles attach to skeletons and comparing vertebrate endoskeletons with arthropod exoskeletons.

Exam points

Relate flexor/extensor attachment to force and movement at a synovial joint.
Compare vertebrate endoskeletons with arthropod exoskeletons and their muscle attachment.

[Maximum number: 1]

The diagram shows a section through part of the leg of an insect and antagonistic muscles X and Y . The tibia moves in the direction shown by the arrow when the muscle is flexing.

Figure for Question B3.3.5 (HL)—Skeletons as anchorage and levers question 1 — IB Biology HL

Outline how the muscle attachment of insects differs from humans.

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B3.3.5 (HL)—Skeletons as anchorage and levers question 1