Which of the following hormones is suddenly secreted into the bloodstream of a frightened person? by Sunday | Dec 22 | Biology WAEC | 0 comments A. insulin B. adrenaline C. thyroxine D. parathormore Correct Answer: Option B – adrenaline Users Also Read These: The hormone which is secreted by the testes and…Which of the following glands secretes a substance…The process by which digested nutrients enter the…If the attraction of the sun is suddenly ceased, the…A guarantee given by one person or party to another…