Question

Acromion process is characteristically found in the ………… of mammals.
(A) Pectoral
(B) Sperm
(C) Pelvic girdle
(D) Skull

Answer 1

Hint: Acromion process is the one of the bone processes which along with the coracoid process of the scapula in order to form the stronger and the stable joint. This acromion process along with the coracoid process helps for the shrugging of the shoulder muscles.

Complete answer:
(A) Pectoral girdle: An acromion process takes place in the pectoral support of vertebrates. Pectoral support consists of scapula and clavicle. The scapula comprises a sharp edge, the spine and it is in the shape of a triangle. This helps in the point of support to the arm and the chest muscles.
(B) Sperms: The sperm is the male reproductive cells of the human and the animals that undergo sexual reproduction. Since the acromion process takes place in bones, sperm has no relation to that.
(C) Pelvic girdle: This is present in the vertebrates. In them, the enclosing or the covering structure formed by the hard pelvis, giving connection to the hind limbs or pelvic balances.
(D) Skull: Skull consists of twenty-two bones in it. It has the eight cranial bones and the twenty-two facial bones in it. The cranial bones have the cranium area that covers the brain.
From the above explanation, it is clear that the acromion process takes place in the pectoral bones.

Thus, the option (A) is the correct answer.

Note:The pectoral girdle is used for providing the structural support to the left and the right shoulders of the body. But these two don't join. They function along with the muscles and help in the shoulder and the arm movement.