Elementary knowledge of the digestive, respiratory, circulatory, excretory, nervous and reproductive system. Circulatory System 11. Alimentary system of cockroach The alimentary canal is a long tube (Holotrophic) extending from mouth to anus. Malpighian tubules help in the removal of nitrogenous wastes and osmoregulation. This document is highly rated by NEET students and has been viewed 768 times. Digestive System 9. circulatory system, respiratory system, digestive system, reproductive system, excretory system of cockroach.In 2005, the role of one of these proteins, pigment dispersing factor PDF. Most insects muscle have a thin layer of striated muscle around this membrane, muscle cells are spirals around the distal end of the tubule and proximal tubule empty contents of the tubule into the gut. In addition, fat body, nephrocytes, cuticle, and urecose glands are also excretory … Introduction to Periplaneta 2. Muscular System 6. Sense organs include a pair of compound eyes, thigmoreceptors, chemoreceptors, auditory receptors and proprioreceptors. Locomotion 8. Integumentary System 5. Indigo carmine in aqueous solution was injected into the blood and the rate of its removal was checked by densitometric measurements of blood spots on filter paper strips. Excretory System 12. Their excretory system consists of two tubules connected to a highly branched duct system. It is convoluted in the posterior end. SCOPE OF SYLLABUS: Morphology and anatomy of different systems of cockroach. Structure 4. Respiration in Cockroach. The Malpighian tubules are the main excretory organs of cockroach which help in eliminating the nitrogenous wastes from the body in the form of uric acid. ADVERTISEMENTS: The below mentioned article provides an overview on Periplaneta (Cockroach):- 1. In cockroach, respiration takes place through a small opening on the sides of its body called spiracles. Fat bodies and nephrocytes are subsidiary organs of excretion. The cells in the tubules are called flame cells (or protonephridia ) because they have a cluster of cilia that looks like a flickering flame when viewed under the microscope, as illustrated in Figure \(\PageIndex{2}\)a. Habit and Habitat of Periplaneta 3. Antennal glands or green glands perform the excretory function in crustaceans like prawns. Fish - Fish - Excretory organs: The primary excretory organ in fishes, as in other vertebrates, is the kidney. Respiratory System 10. The efficiency of the excretory system of the American cockroach was measured using a dye clearance test. In fishes some excretion also takes place in the digestive tract, skin, and especially the gills (where ammonia is given off). Reproductive System The nervous system comprises of central, peripheral and sympathetic nervous system. Cockroach excretes uric acid, so it is uricotelic. Sep 25, 2020 - Cockroach: Digestive and Excretory System NEET Notes | EduRev is made by best teachers of NEET. Mouth leads Body Cavity 7. When the air enters the respiratory system of a cockroach through these outside openings, spiracles act as muscular valves, leading to the inside respiratory system. Excretion may be thought of as those processes which remove substances from the metabolic pool for the negative reason that they interfere with ordered metabolism. The principle excretory organs of cockroach consists of malpighian tubules. Nervous System 13. Cockroaches, like all insects, breathe through a system of tubes called -Is the process in which an organism eliminates metabolic wastes and not 19.1 H UMAN EXCRETORY SYSTEM In humans, the excretory system consists Endocrine System 14. tubules are the excretory structures of most of the insects including cockroaches. 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