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

Define needs of fluid in postoperative nutritional care, Define Requirement...

Define Requirements of Fluid in Postoperative Nutritional Care Extensive fluid losses may occur through vomiting, haemorrhage, diesis, excudate, fever and sweating after a surg

Patient education for preventive strategies for food allergy, Define Patien...

Define Patient Education for preventive strategies for food allergy? Patient education, therefore, is critical and should include: Allergen identification (e.g., how to

Types of passive transport, Simple diffusion Only comparatively small u...

Simple diffusion Only comparatively small uncharged or hydrophobic molecules (H2O, O2, and CO2, other gases, urea and ethanol)   cross   the lipid   bilayer   through simple

Standards of psychiatric nursing, Standards of Psychiatric Nursing: By...

Standards of Psychiatric Nursing: By  1956, the Masters programme was extended  to two academic years. Some nurses established private practices with psychiatric patients. It

Determine the phylum annelida to arthropods, What is the morphological char...

What is the morphological characteristic that evolutionarily approximates the beings of the phylum Annelida to arthropods? The metameric feature, i.e., the body segmentation in

Malarial parasites be transmitted from an infected person, By what means ca...

By what means can malarial parasites be transmitted from an infected person to a healthy person?   The malaria parasite is transferred when a healthy person is bitten by a m

Define the term ancestral characteristic, Define the term Ancestral charact...

Define the term Ancestral characteristic A character shared by all members of a taxonomic group of organisms (taxon) and used to define the unique nature of the group. The cha

Define prevention of idd - double fortified salt, Define prevention of idd ...

Define prevention of idd - Double Fortified salt? iron deficiency anaemia and iodine deficiency disorders often co-exist, the most effective approach to control these public he

Protozoa, the function of contractil vacuole

the function of contractil vacuole

Sucrose is non sugar but maltose and lactose are not. why?, Sucrose is a no...

Sucrose is a non-reducing Sugar while Maltose and Lactose are reducing due to the presence of free Aldehydic Functional Group in them. In SUgar the Aldehydic Group of both Glucose

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