Avian Bones Compare And Contrast The Shoulder Girdle
Kyle D’Mello, Chau Nguyen, Tiana Miran
Mr. Wylam
Period 5
21 November 2013
Comparative anatomy question #3
3. Compare and contrast the shoulder girdle and pelvic girdle of an avian skeleton versus human bone. Include in your explanation the structural differences and how that relates to the differing functions of both shoulder and pelvic girdles. Avian, and human bones seem to be very different, but there are some similarities about them. The purpose of the comparative essay are to find out the different, and similarities of avian bones vs. human bones. In avian bones, the shoulder girdle is clearly lighter than human since avian creatures needs their wing to be light to beable to fly. The structure of the bones are tend to be thin-walled,
and hollow, also within the hollow bones there are struts which help the constant stress of flying. Humans on the other hand don’t need to fly to survive, so our bones tend to be thicker wall, and much more denser compare to avian bones due to how our body moves. The shoulder girdle of an avian is similar to the human body, both structure included humerus, ulna, radius, scapula. But among these structures there are major differences. In human bones there are 2 scapulas, for avian their clavicle comes together to support avian adaption of flying also know as the wishbone, they act as a point of expands and contracts during flight to provide structure to the thoracic vertebrae, and also help store energy, helping flying much easier and less sufficient. Human clavicle on the other hand functions as a strut to keep limbs at the side. The pelvic girdles also have some similarities and differences. For example both human and avian skeleton, the human coccyx, and avian psygostyle are similar, since they both are not tails just there and is pretty useless, also both skeleton have the illium, the issium, and pubis. But there is a different avian pelvic girdle is much bigger, the reason behind this is that most avian creatures lay eggs, and the bigger the pelvic is the higher the chance of the egg coming out safely. Human have a smaller pelvic girdle because we gives birth, and have enough space for our baby to come out. In conclusion, avian bones, and human bones have their differences, and similarities even though avian and human are two different species. This shows that avian and human are once have the same anscestor
Works Cited D’Elgin, Tershia. “Birds.” Anatomy. The New York Times Company Http://www.netplaces.com/ “Pelvic Girdle”.Pelvic Girdle. The Inner Bird http://www.innerbird.com/pelvic_girdle/pelvic_girdle.html Bone.“Distinguishing Human from Animal Bones”. The University of Arizona http://www.statemuseum.arizona.edu/
Mr. Wylam
Period 5
21 November 2013
Comparative anatomy question #3
3. Compare and contrast the shoulder girdle and pelvic girdle of an avian skeleton versus human bone. Include in your explanation the structural differences and how that relates to the differing functions of both shoulder and pelvic girdles. Avian, and human bones seem to be very different, but there are some similarities about them. The purpose of the comparative essay are to find out the different, and similarities of avian bones vs. human bones. In avian bones, the shoulder girdle is clearly lighter than human since avian creatures needs their wing to be light to beable to fly. The structure of the bones are tend to be thin-walled,
and hollow, also within the hollow bones there are struts which help the constant stress of flying. Humans on the other hand don’t need to fly to survive, so our bones tend to be thicker wall, and much more denser compare to avian bones due to how our body moves. The shoulder girdle of an avian is similar to the human body, both structure included humerus, ulna, radius, scapula. But among these structures there are major differences. In human bones there are 2 scapulas, for avian their clavicle comes together to support avian adaption of flying also know as the wishbone, they act as a point of expands and contracts during flight to provide structure to the thoracic vertebrae, and also help store energy, helping flying much easier and less sufficient. Human clavicle on the other hand functions as a strut to keep limbs at the side. The pelvic girdles also have some similarities and differences. For example both human and avian skeleton, the human coccyx, and avian psygostyle are similar, since they both are not tails just there and is pretty useless, also both skeleton have the illium, the issium, and pubis. But there is a different avian pelvic girdle is much bigger, the reason behind this is that most avian creatures lay eggs, and the bigger the pelvic is the higher the chance of the egg coming out safely. Human have a smaller pelvic girdle because we gives birth, and have enough space for our baby to come out. In conclusion, avian bones, and human bones have their differences, and similarities even though avian and human are two different species. This shows that avian and human are once have the same anscestor
Works Cited D’Elgin, Tershia. “Birds.” Anatomy. The New York Times Company Http://www.netplaces.com/ “Pelvic Girdle”.Pelvic Girdle. The Inner Bird http://www.innerbird.com/pelvic_girdle/pelvic_girdle.html Bone.“Distinguishing Human from Animal Bones”. The University of Arizona http://www.statemuseum.arizona.edu/