Avian Osteology and Integument Quiz

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Questions and Answers

What is the function of the pneumatic bones in birds?

  • To aid in the digestion of food
  • To store excess calcium for eggshell formation
  • To connect with the air sacs of the respiratory system (correct)
  • To provide structure and support to the bird's body

Which bones make up the greater roof of the nasal cavity in birds?

  • Malar bones
  • Lacrimals/prefrontals
  • Maxillae
  • Nasal bones (correct)

What is the primary function of medullary bones in birds?

  • To assist in the bird's respiratory system
  • To serve as an important source of calcium during egg laying (correct)
  • To aid in flight and mobility
  • To provide structural support for the wings

What is the purpose of the kinetic system in a bird's skull?

<p>To allow primary axis movement while the jaw moves (A)</p> Signup and view all the answers

What role do contour feathers play in birds?

<p>Facilitate insulation and waterproofing (C)</p> Signup and view all the answers

Where are the optic foramen located in a bird's skull?

<p>At the caudal border of the interorbital septum (C)</p> Signup and view all the answers

What is the function of the wishbone in birds?

<p>To support the shoulders during flight (C)</p> Signup and view all the answers

Which bone in the avian wing is the largest and extends the full length of the forearm?

<p>Ulna (D)</p> Signup and view all the answers

How many phalanges does digit D11 in the avian wing have?

<p>2 (B)</p> Signup and view all the answers

Which bone in the avian face is the largest?

<p>Dentary (A)</p> Signup and view all the answers

What is the function of the quadrate bone in birds?

<p>Permits extreme opening of the mouth (C)</p> Signup and view all the answers

Which bone articulates with the head of the humerus in the avian shoulder girdle?

<p>Coracoid (A)</p> Signup and view all the answers

What is the main function of the turbinate bones in birds?

<p>Regulation of body temperature (C)</p> Signup and view all the answers

In which group of birds do holorhinal external nares occur?

<p>Anseriform and galliforms (C)</p> Signup and view all the answers

What is absent in the cranial group of birds?

<p>Interparietal bone (D)</p> Signup and view all the answers

What do premaxillae form in birds?

<p>Upper portion of the beak (D)</p> Signup and view all the answers

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