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.
â¢ SUBJECT (verb). The verb SUBJECT has 4 senses: 1. cause to experience or suffer or make liable or vulnerable to. 2. make accountable for. 3. make subservient; force to submit or subdue. 4. refer for judgment or consideration. Familiarity information: SUBJECT used as a verb is uncommon.ypernyms (subject is a kind of...): knowledge base; knowledge domain (the content of a particular domain or field of knowledge). Hyponyms (each of the following is a kind of subject): futuristics; futurology (the study or prediction of future developments on the basis of existing conditions).