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.
A simple subject of a sentence is who is performing the action of the verb without any words that might be modifying the subject. Examples: Martha rides her bike to work e â¦ very day. Martha is the simple subject. The young, energetic dog chases the ball.