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.
2) Subjects, Verbs, and Objects. The basic parts of a sentence are the subject, the verb, and (often, but not always) the object. The subject is usually a noun --a word that names a person, place, or thing. The verb (or predicate) usually follows the subject and identifies an action or a state of being. An object receives the action and usually follows the verb. Learn More: 1  Subjects, Verbs, and Objects.