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

Use of computer in biotechnology, what are the uses of computer in biotechn...

what are the uses of computer in biotechnology ??? briefly explain any twenty

Define role of buffer in electrophoresis, Define Role of Buffer in Electrop...

Define Role of Buffer in Electrophoresis? Buffer ions have a two-fold purpose in electrophoresis, they carry the applied current, and they fix the pH at which electrophoresis i

Explain astrand cycle test, Explain Astrand Cycle Test? This is a sub m...

Explain Astrand Cycle Test? This is a sub maximal test done on cycle ergo meter. In this test, comparatively lower wattages are set. For example, for males less than 35 years o

Determine about the trichromatic vision, Determine about the Trichromatic v...

Determine about the Trichromatic vision Trichromatic vision is the terminology used for normal vision, those who require aU' three primary colours to make a match with an unkno

What are the main available vaccines against poliomyelitis, Q. What are the...

Q. What are the main available vaccines against poliomyelitis? The vaccines (medicines) used against poliomyelitis are the Sabin vaccine and the Salk vaccine. The Sabin vaccine

What is the role of vitamin k in the blood coagulation, Q. What is the orga...

Q. What is the organ where most of the clotting factors are produced? What is the role of vitamin K in the blood coagulation? Most of the clotting factors are produced in the l

Effects on ecosystem - air pollutants, Effects on Ecosystem - Air pollutant...

Effects on Ecosystem - Air pollutants The effects of pollutants on ecosystem become visible after a long period of exposure. In highly industrialised countries the vegetation

Aortic valvotomy-surgical techniques, Aortic Valvotomy :  These days ...

Aortic Valvotomy :  These days aortic valvotomy even in neonates and critically ill infants is done under cardio pulmonary bypass. Through a median stemotomy, ascending aorta

Build vocabulary, what is the opposite of yield? A.grow B.attack C.ask D.an...

what is the opposite of yield? A.grow B.attack C.ask D.answer

How can the menstrual cycle be described, Q. Including major events and hor...

Q. Including major events and hormonal changes how can the menstrual cycle be described? One can imagine a cycle like an analog clock at which at 0 o'clock is the beginning and

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