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.
The word singular denotes a quantity of one. Singular contrasts with plural, which denotes more than one. For example: The terms singular and plural are values of the grammatical category of number. Most nouns have singular and plural forms. Nouns with singular and plural forms (e.g., shark/sharks, woman/women) are known as a countable noun.