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.
subject matternoun [ C ] uk â /ËsÊb.dÊekt ËmÃ¦t.Ér/ us â /ËsÊb.dÊekt ËmÃ¦tÌ¬.É/. âº the things that are being talked or written about, or used as the subject of a piece of art, etc.: