Respiration in insect - cockroach, Biology

Assignment Help:

RESPIRATION IN INSECT (COCKROACH) -

  • Respiration is direct. So metabolic rate is high.
  • This system is related to each cell of the body so respiratory pigment is absent.
  • Unit of respiratory system is trachea. These are white thread like form net in body.
  • Ectodermal in origin. In wall of trachea taenidia present.
  • These are complete rings made up of cuticle, maintain diameter of trachea.
  • Branches of trachea near organs are tracheoles in their wall rings are absent.
  • Diameter is less. Walls are elastic. Lumen is narrow. Thin cuticle is tracheoline.
  • At the point of origin of tracheoles, tracheole cell present.
  • In the end of tracheoles, tracheole fluid is filled, helpfull in exchange of gases.
  • All trachea are originated from 3 pairs of tracheal trunks D, V & L.
  • Lateral tracheal trunk is thickest one only this opens out side by 10 pairs of spiracles or stigmeta.
  • 2 pairs thoracic spiracles are present. 8 pairs abdominal spiracles are present.
  • 1st pair thoracic spiracle present between prothorax and mesothorax.
  • 2nd pair thoracic spiracle present between meso and metathorax.
  • 8 pairs abdominal spiracle present in first 8 segments of abdomen. Spiracles are ectodermal in origin.
  • All spiracles present on lateral side, except 1st abdominal spiracle or 3rd spiracle.
  • Near to spiracle Peristigmetal gland present. Each spiracle is protected by a plate i.e., peritreme.
  • Cavity of spiracle is atrium. In it bristles present to check dust particles.
  • By the outgrowth of wall of atrium a valve is formed. Controls opening and closing of spiracle.
  • 1st thoracic and 1st abdominal spiracles always remains open, rest open or close during process.

Related Discussions:- Respiration in insect - cockroach

Explain fibre and cardiovascular disease (cvd), Explain Fibre and Cardiovas...

Explain Fibre and Cardiovascular Disease (CVD)? The role-of dietary fibre in modulation of blood lipids was demonstrated by Keys and his co-workers in a series of experiments c

Define the patient care related to neurological disorder, Define the patien...

Define the patient care related to neurological disorder? A few additional points related to the patient care that need to be kept in mind include paying attention to the patie

Retain the tooth there are two ways-endodontics principles, Once the decisi...

Once the decision has been made to retain the tooth there are two ways for ttt: •     Non surgical retreatment :             -  guided access to apex via coronal access

Show very low level of lactase activity, Q. Show Very low level of lactase ...

Q. Show Very low level of lactase activity? Very low level of lactase activity: at very low level of lactase activity all milk products must be eliminated, substitutes of milk

List the routine treatment sequence for an implant patient, List the routin...

List the routine treatment sequence for an implant patient. The different phases are - Preliminary treatment - Stage I surgical phase - Stage II surgery and Prosthetic

Pollinia and massulae, Pollinia and Massulae In most cases the pollen ...

Pollinia and Massulae In most cases the pollen grains of each tetrad become separated from one another and they lie freely in the pollen sac. In some plants, mostly members of

Explain about non-surgical therapy, Non-Surgical Therapy The most conse...

Non-Surgical Therapy The most conservative approach to treatment involves non-surgical therapy. This treatment modality includes three subcategories: a) Pharmacological ther

Define the bioavailability of cyanocobalamin, Define the Bioavailability of...

Define the Bioavailability of cyanocobalamin? Vitamin B 12 is widely available. Availability is more from non-vegetarian foods as described earlier under the food sources sec

Uses of grafting, Uses of Grafting Grafting helps to preserve and pe...

Uses of Grafting Grafting helps to preserve and perpetuate varieties that cannot reproduce by vegetative method. Grafting changes less useful varieties to more desirable

Awareness for diabetes mellitus, Q. Awareness for diabetes mellitus? Aw...

Q. Awareness for diabetes mellitus? Awareness should be generated in the community to prevent the diabetes mellitus, since we know prevention is better then cure. Use behav

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd