Question 30 (8 points) The Pectoralis major muscle of the bird is responsible for this wing movement? Up Down
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Step 1: The question asks about the function of the Pectoralis major muscle in bird wing movement. Show more…
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One of the primary muscles that birds use to fly is the pectoralis. (If you've ever eaten chicken or turkey breast, you've eaten pectoralis muscle. Like the homologous human muscle, it originates on the sternum and inserts on the humerus. Different species of birds vary greatly in their level of activity. Migratory birds can fly thousands of miles, while non-migratory birds may spend their life flying in short bursts. Based on the drawing, when the pectoralis muscle contracts, the wing will be pulled Hint: Don't forget that bird wings are homologous to human arms. Which way do your arms move when your pectoralis muscle contracts?
Anand J.
How can an individual bird increase the lift on its wings? (Select all that apply) Group of answer choices Beat its wings faster, thus creating faster airflow over the wings Significantly change its wing loading Decrease the angle of attack of its wings Pull in its wings to make them shorter Use muscles to increase the camber of its wings Fly into a headwind (a wind blowing from directly in front)
Adi S.
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 downstroke in birds? QUESTION 6 Which muscle is responsible for the upstroke of the wing in birds?
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