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    Re-NEET Mock Test 2026 (Free PDF): Full-Length Test With Answer Key & Score Analysis

    Circulatory System of Cockroach MCQ - Practice Questions with Answers

    Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

    Quick Facts

    • 11 Questions around this concept.

    Solve by difficulty

    The visceral organs of the cockroach are present in _____ surrounded with ______.

    The heart of the cockroach is made up of

    Which of the following is true regarding the circulatory system of the cockroach?

    Alary muscles are present in ______ and they help in _______

    In cockroach , heart comprises of 

     In case of cockroach, nephrocytes are found in 

    Haemolymph in a cockroach is devoid of 

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    Hemocoel is divided by ______ horizontal partition into _____ wide and flattened sinuses 

    Which of the following statements is/are incorrect regarding cockroaches?

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    Concepts Covered - 0

    Circulatory System of Cockroach

    Circulatory System of Cockroach

    • The circulatory system of cockroach is open type with blood flowing in open spaces. 
    • Blood flows freely in the body cavity which is known as haemocoel. 
    • Blood vessels are poorly developed 
    • The haemocoel is divided into sinuses or blood spaces. 
    • Visceral organs located in the haemocoel are bathed in blood (hemolymph) which is composed of colourless plasma and haemocytes.

    Heart

    • The heart of cockroach lies along the mid dorsal line of thorax and abdomen. 
    • It is an elongated muscular tube consisting of 13 funnel-shaped contractile chambers. 
    • Each contractile chamber of heart contains inhalant openings called ostia on either side
    • Blood from sinuses enter heart through ostia and is pumped anteriorly to sinuses again. 
    • The pumping of blood is brought about by the contraction and relaxation of fan-shaped paired muscles  called alary muscles.

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