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.
sit (third-person singular simple present sits, present participle sitting, simple past sat, past participle sat or (archaic, dialectal) sitten) A painting of a man sitting. (intransitive, of a person) To be in a position in which the upper body is upright and supported by the buttocks. 1460-1500, The Towneley PlaysË He is so fair, without lease, he seems full well to sit on this. After a long day of walking, it was good just to sit and relax. (intransitive, of a person) To move oneself into such a position.