Therefore, the respiratory system of the hissing cockroach functions as a unidirectional pump through the coordinated action of the spiracles and abdominal musculature. It consists of a system of air tubes or tracheae through which every tissue of their body remains in direct contact with the environmental air for gaseous exchange. A complicated system of numerous, shiny, transparent and branched air tubes or tracheae are found for gaseous exchange in the haemocoel cavity. PDF | Our goal is to investigate the sensory responses of cockroaches in response to various stimuli. Some people may become allergic to cockroaches after frequent exposure. Download Respiratory System MCQ Question Answer PDF fun facts about the nervous system. The respiratory system of cockroach is well developed and elaborate like those of the other terrestrial insects to compensate the absence of respiratory pigment in the blood. 27. 14.2 Tracheal system in a cockroach 14.1.4 Respiratory system in humans (pulmonary respiration) zHumans have a well developed respiratory system suitable for meeting the higher requirement of oxygen in their bodies. Why is the respiratory system of cockroach cal led polypneustic and holopenustic system? Branched tubes known as trachea open through 10 pairs of small holes called spiracles or stigmata, present on the lateral side of the body. Fig. The respiratory system of cockroach is a network of trachea known as tracheal system. This mechanism may be employed by a broad diversity of large insects that respire by active ventilation. respiratory system of cockroach. Explanation are given for understanding. Respiratory system . 5.1). respiratory system worksheet. a) Due to the presence of more than three pairs of spiracles, the respiratory system is known as polypneustic system. Two pairs are in thorax while the rest eight are in each of the eight respiratory system ppt. Respiratory System MCQ Question with Answer Respiratory System MCQ with detailed explanation for interview, entrance and competitive exams. They respire through the small openings called spiracles. The main tracheal trunk communicates with exterior by 10 pairs of apertures called spiracles, present on the lateral sides of the body. They breathe in oxygen rich air through the spiracles which opens into the tracheal tubes. excretory system structure. It consists of branching systems of air tubules c alled tracheae lined by chitin. zThe respiratory system consists of nostrils, nasal cavity, pharynx, larynx, trachea, and bronchi. Human Physiology/The respiratory system 3 Inspiration Inspiration is initiated by contraction of the diaphragm and in some cases the intercostals muscles when they receive nervous impulses. respiratory system pdf. During normal quiet breathing, the phrenic nerves stimulate the diaphragm to … The respiratory system of the cockroach is very specialized. The respiratory system of cockroach is well developed compared with other terrestrial insects (Figure 4.11). Respiratory System of Cockroach The blood of cockroach is not responsible for the transportation of gases, it serves as a stationary medium for exchange of gases. Biology Cockroaches are insects, flattened from top to bottom, usually with two pairs of wings folded flat over the back (Fig. b) As all the spiracles are functional, the system is known as holopenustic system … Cock-roaches can sometimes play a role as carriers of intestinal diseases, such as diarrhoea, dysentery, typhoid fever and cholera. 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