The stomach secretes the hormone ghrelin which functions to

The correct answer is: increase appetite.

Explanation:

Ghrelin is a hormone secreted by the stomach with two main functions: increase appetite and stimulate the release of the growth hormone.

Ghrelin is called the "hunger hormone" because it stimulates the ingestion of food and the storage of fat by traveling through the bloodstream (like all hormones) to the hypothalamus, which is a region in the brain that controls appetite. To stimulate the release of growth hormone, ghrelin also reaches the pituitary gland.

Other functions of this hormone include protecting the cardiovascular system and controlling the release of the hormone insulin.

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.