Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It plays vital roles in digestion, heart and muscle function, brain development and maintenance of bones.
A singular subject is a noun or a pronoun for just one person, place, or thing. A plural subject is a noun or a pronoun that is two or more persons, places, or things. Exampl â¦ es: Singular subject: The boy came for lunch. He was hungry. Plural subject: The boys came for lunch.
Quite simply, a singular noun is a noun that refers to only one person, one place, one thing, or one idea. If you look at one object and name it, you have an example of a singular noun. For example there is one lamp on my bookcase and one chair at my desk.