Define transverse section of body of ascaris lumbricoides, Biology

Assignment Help:

Define Transverse section of body of ascaris lumbricoides?

The transverse sections of male and female A, lumbricoides exhibit some differences based on their sex.

 T.S. of Female 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 syncytial.

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

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

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

4. Two lateral excretory canals are visible inside the two Iateral lines or chords.

5. Dorsal and ventral nerves run 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 coelonrocytes or pseudocoelocytes or giant cells.

7. Pseudocoeloln contains the transversely cut portions of alimentary canal, uteri, oviducts and ovaries.

8. In ovaries lumen is absent . Ovaries have a central rachis with 'the young eggs clustered around it.

9. Uterus has a wide lumen which is loaded with unfertilized eggs. Eggs have single muscles and cytoplasm.

10. Oviducts contain eggs in lumen.

11. Ovary, oviduct and uterus are elongated and coiled strictures for which reason they appear more than one in sections.

12.intestine is visible as a dorso-ventrally flattened structure formed of a single layer of columnar epithelial cells, lined externally by a thin layer of cuticle. Intestine has no muscle layer.


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

Examples of the energetic function of organic molecules, Q. What are the fe...

Q. What are the few examples of the energetic function of organic molecules? Since they are complex molecules, organic molecules store large amount of energy, presenting many c

What is the major biological function of ribosomes, Q Where in the cell can...

Q Where in the cell can ribosomes be found? What is the major biological function of ribosomes? Ribosomes can be found free in the cytoplasm, adhered to the external side of th

What are the two major morphological patterns of cnidarians, Q. What are th...

Q. What are the two major morphological patterns of cnidarians? Concerning locomotion how do these forms differentiate from each other? Morphologically, cnidarians classify as

How are the male gametes of gymnosperms formed, Q. How are the male gametes...

Q. How are the male gametes of gymnosperms formed? What is the relationship between the pollen grains and the concept of alternation of generations? In the male strobiles (cone

Explain fontan operation, Explain Fontan Operation ? The original Font...

Explain Fontan Operation ? The original Fontan operation was done in a case where classical Glenn operation had been done (end-Lo-end anastomosis of superior vena cava and lig

Are there differences between the male and female skeletons, Q. Are there d...

Q. Are there differences between the male and female skeletons? Many general differences exist between female and male skeletons. Male skeleton is normally larger and heavier t

Difference between the concepts of food chain and food web, What is the dif...

What is the difference between the concepts of food chain and food web? The chain theory is a theoretical model to study the energy flux in ecosystems. In fact, in an ecosystem

Canine parvovirus infections, Canine parvovirus infections The canine p...

Canine parvovirus infections The canine parvovirus infections are caused by a virus, which belongs to the genus Parvovirus in the family Parvoviridae. This virus is similar to

Define nutritional status of the elderly, Define Nutritional Status of the ...

Define Nutritional Status of the Elderly? Nutritional risk factor is defined as "characteristic or occurrence that increases the likelihood that an individual has or will have

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