Define transverse section of body of male ascaris, Biology

Assignment Help:

Define Transverse section of body of male Ascaris?

1. Body wall consists of the following:

(a) Cuticle is the outermost layer. It is a thick, tough, elastic membrane covering the epidermis.

(b) Epidermis, also called subcuticle, lies below the cuticle and is syncytiat.

(c) Muscle layer is the innermost layer of the body wall and is composed of a single layer of spindle-shaped cells arranged longitudinally.

2. Epidermis is thickened into ridges in four regions which project into the body cavity as the four longtudinal chord (also called lines) of which two are lateral ones, one dorsal and one ventral.

3. Presence of the four longitildinal chords results in the easy identification of four bands of muscles- two dorso-lateral and two ventro-lateral.

4. Two lateral excretory canals are visible within the two lateral lines or cords.

5. Dorsal and ventral nerves rill1 in the dorsal and ventral lines respectively.

6. 'The space between the body wall and alimentary canal is the pseudocoel (false body cavity). Pseudocoel has fibrous tissue and fixed cells called coetolnocytes or pseudocoelocytes or giant cells.

7. Transverse section also shows alimentary canal, testis, vasdeferens and seminal vesicles lodged within the pseudocoel.

8. Variously cut portions of the coiled testes are seen in the section. The testes do not have a lumen but possess a central rachis.

9. Sperm duct and seminal vesicles have lumen, filled with abundance of sperms.

10. Intestine is visible as a dorso-ventrally flattened structure formed of a single layer of long endodermal, nucleated epithelial columnar cells.


Related Discussions:- Define transverse section of body of male ascaris

Protozoans, what are vhrmful effects of protozoans

what are vhrmful effects of protozoans

Multiple alleles, MULTIPLE ALLELES (i)         More than two alternativ...

MULTIPLE ALLELES (i)         More than two alternative forms (alleles) of a gene in a population occupying the same locus on a chromosome or its homologue are known as multiple

Explain karyotype - animal taxonomy, Explain Karyotype - Animal Taxonomy? ...

Explain Karyotype - Animal Taxonomy? In animals systematic, it is the karyotype, that is the chromosome number and structure which are used quite extensively either separately

Explain exclusion diets, Explain Exclusion diets Exclusion diets: Speci...

Explain Exclusion diets Exclusion diets: Specific dietary exclusion becomes a necessity  in  case of  food allergy or food intolerance.  The therapeutic use of  such  diets req

Woodland stage - hydrarch, Woodland Stage - Hydrarch When the lowland ...

Woodland Stage - Hydrarch When the lowland has been built up to an extent where the soil is saturated perhaps only in spring and early summer, certain species of shrubs and tr

Modification of trna, Transfer RNA molecules are notable for having general...

Transfer RNA molecules are notable for having generally nucleotides shown in the figure such as 1-methylguanosine (m1G), pseudouridine   (Ψ), dihydrouridine   (D), inosine (I) and

Polynephritis in cattle, Polynephritis in cattle Contagious bovine pol...

Polynephritis in cattle Contagious bovine polynephritis is a specific infection of urinary tract of cattle. The causative agent is Corynebacterium renale, a rod shaped gram-po

Rate of conversion of atmospheric nitrogen into ammonia, The biological con...

The biological conversion of atmospheric nitrogen into ammonia in the group of plants known as legumes (peas, beans lentils and clover etc.) is achieved by the action of soil bacte

Does every amino acid have a central carbon, Does every amino acid have a c...

Does every amino acid have a central carbon? To which organic group is that central carbon bound? A carboxyl group -COOH, an amine group - NH 2 , an atom of hydrogen -H and a v

Describe in detail about the psychological testing, Describe in detail abou...

Describe in detail about the Psychological Testing Psychological testing is the third source of information about the child, and the source most often equated with neuropsychol

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