QUESTION 4 Which of the following best describes the structure supporting the wing of a bat? Digits are greatly reduced and support feathers Digits 2, 3, 4 and 5 support the skin membrane Digit 4 is elongated to support the skin membrane QUESTION 5 Which muscle is responsible for the down stroke in birds? QUESTION 6 Which muscle is responsible for the upstoke of the wing in birds?
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For Question 5, the muscle responsible for the downstroke in birds is the pectoralis major. For Question 6, the muscle responsible for the upstroke of the wing in birds is the supracoracoideus. Show more…
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