Question

The shoulder girdle connects the limbs to ______.
A. Axial skeleton
B. Appendicular skeleton
C. Both A and B
D. Ribs

Answer 1

Hint: The shoulder girdle is also known as the pectoral girdle. It is a set of bones that connects to arms on both sides. It forms the vertical axis of the body and includes the bones of the head, neck, back, and chest of the body.

Complete answer: The portion of the skeleton that supports the appendages or the upper limbs is known as the pectoral girdle. The pectoral girdle is made by joining four bones. Thus, the shoulder girdle helps in connecting the upper limbs to the axial skeleton, which consists of the bones of the head and trunk present in a vertebrate animal. The bones clavicle and scapula present in the shoulder girdle helps in attaching the upper limbs to the sternum of the axial skeleton.
a) The bone of the limbs and all the girdles, both the shoulder and the hip girdle are also included in the appendicular skeleton. Thus, it cannot be regarded as the connection point of the limbs.
b) Ribs: A set of 12 bones that occur in pairs, forms a cage-like structure and protects the thorax region containing many vital organs such as the heart and lungs.
Hence, the correct answer is option A.

Note: The framework of the human body is known as the skeleton. The human skeleton is made up of two hundred and six bones and the associated joints, which facilitate movement. At the time of birth, a human baby will have two hundred and seventy bones, upon development some bones fuse, resulting in a decreased total bone number.