Question

Which of the following human skeletal parts are correctly matched with their respective category?

	Pairs of skeletal parts	Category
A)	Humerus and ulna	Appendicular skeleton
B)	Malleus and stapes	Ear ossicles
C)	Sternum and ribs	Axial skeleton
D)	Clavicle and glenoid cavity	Pelvic girdle

A) A and B only
B) A, B and C only
C) A, B, and D only
D) All of these

Answer 1

Hint:
Skeletal muscles consist of a framework of bones and a few cartilages. The skeleton system plays an important role in the movements of our body. Suppose we had to chew food without bones in our jaw and also walk and run without limb bones.

Complete step by step answer:
The bones of the limbs along with their girdles constitute the appendicular skeleton. Each limb is made up of 30 bones. The two large bones of the hands are the radius and ulna. The radius and ulna are parallel to each other and the ulna is shorter and smaller than the radius. Mallus, incus, and stapes are the three tiny bones present in the inner ear also known as ear ossicles. The skull region articulates with the superior region of the vertebral column with the help of two occipital condyles also called the dicondylic skull.
There are 12 pairs of ribs. Each rib is a thin flat bone connected dorsally to the vertebral column and ventrally to the sternum. The axial skeleton comprises 80 bones i.e., the skull, sternum, ribs, and vertebral column. The clavicle and glenoid cavity come under the pectoral girdle. The clavicle articulates with acromion and below the acromion is a depression called the glenoid cavity. It articulates with the head of the humerus to the shoulder joint.

Option ‘B’ is correct

Note:
A radius is a bone that is shaped as a prism, is a long bone, and is also somewhat curved to the longitude side. It connects with the capitulum of the humerus. It also connects with the ulna by 2 ends: the lower part and the upper part also known as the head.