BHU PMT BHU PMT (Mains) Solved Paper-2009

  • question_answer
            In insects, muscle contraction, oviposirion, defecation and heartbeats are regulated by

    A)  corpora allara                   

    B)  corpora cardiac

    C)  protocerebrum               

    D)  thoracic ganglion

    Correct Answer: B

    Solution :

                     In insects, a hormone called proctolin is originated from corpora cardiaca. This hormone targets the hindgut and possible visceral muscles (heart and oviduct) and regulates the muscle contraction, defecation, oviposition and heartbeat.


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