Question

What is furcula in a flying bird?
A. A structure present in trachea to produce sound
B. V – shaped bone by the fusion of both clavicles and single interclavicular.
C. Large strong bone fused with synsacrum
D. Pillar shaped coracoids bone of pelvic girdle.

Answer 1

Hint: The furcula is derived from Latin word little fork commonly known as wish bone found in birds and other species of dinosaurs. Giving strength to the thoracic skeleton is the primary function of the furcula bone. It was usually formed by the fusion of both clavicles. It is a prance between the bird's shoulders and connects to the bird's scapula.

Complete answer:
-Furcula is a forked bone found in birds and other species of dinosaurs. It is derived from a Latin word little fork.
-It is formed by the fusion of \[2\] clavicles. It is a V shaped bone found in birds.
-It is commonly known as wishbone.
-The primary function of this bone is to give strength to the thoracic skeleton to take the flight.
-A structure present in trachea to produce sound is larynx
-Large strong bone fused with synsacrum is an innominate bone.
-Pillar shaped coracoid bone of pelvic girdle is pectoral girdle.
V-shaped bone by the fusion of both clavicles and single interclavicular.
Hence, the correct answer is option (A).

Additional information:
-It works as a strut between the shoulder and articulates each scapulae.
-The hyoid bone is equivalent to the wishbone in turkey.
-It may be y, u and v shaped. The strength and flexibility depends upon the species of birds.
-It is very flexible and in resting position it can even extend up to $50$ % more.
-It is light and hollow in larger species of bird.

Note: Furcula is the v or u shaped bone found in birds and some species of dinosaurs. It is a fusion of both clavicles and single interclavicular. It is also known as wishbone. It gives strength to the thoracic cavity. The furcula protects the chest during flight and helps in the contractions of the muscles so that the ribs don’t break.