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.
All parts of a sentence should agree. In general, if the subject is singular, the verb and any. pronouns referring to the subject should be singular; if the subject is plural, the verb and any. pronouns referring to the subject should be plural. Changing a subject from singular to plural. may change other parts of the sentence, too!