What feature of body wall muscles in nematodes requires a high hydrostatic pressure in the pseudocoelomic fluid for efficient function?

1. What feature of body wall muscles in nematodes requires a high hydrostatic pressure?
2. What is hydrostatic pressure in nematodes?
3. What muscles are present in nematodes?
4. Where is the pressure of muscle contraction applied in a hydrostatic skeleton?
5. How does hydrostatic pressure work?
6. What are the functions of hydrostatic skeleton?
7. What are the adaptive features of nematodes?
8. What are the characteristics of nematodes the intestinal roundworms?
9. Do nematodes have circular muscles?
10. What is the role of nematode body wall in its locomotion?
11. What is the body cavity of nematodes?
12. What supports the body of a nematode?
13. What is a characteristic of a hydrostatic skeleton quizlet?
14. What will happen when longitudinal muscles contract in nematodes hydrostatic skeleton?
15. How does hydrostatic skeleton differ from structural skeleton?

What feature of body wall muscles in nematodes requires a high hydrostatic pressure?

8. What feature of the body-wall muscles in nematodes requires a high hydrostatic pressure in the pseudocoelomic fluid for efficient function? The high hydro static pressure helps the nematode keep its shape and not collapse during movement and keeps all the animals internal organs where they need to be.

What is hydrostatic pressure in nematodes?

muscles moves the body in a series of curves in a single. dorsoventral plane- characteristic of nematode movement. Hydrostatic pressure is very high- up to 200 mm Hg. This internal pressure influence many functions- ingestion, defecation, copulation, laying eggs.

What muscles are present in nematodes?

Nematodes contains 2 type of muscles, somatic related to the body structure and specialized muscles related to certain parts of the body for particular purpose (Bird and Bird 1991). There are two main types of muscle fibers architecture in nematodes, platymyarian and coelomyarian (Burr and Gans 1987).

Where is the pressure of muscle contraction applied in a hydrostatic skeleton?

Movement in a hydrostatic skeleton is provided by muscles that surround the coelom. The muscles in a hydrostatic skeleton contract to change the shape of the coelom; the pressure of the fluid in the coelom produces movement.

How does hydrostatic pressure work?

The force of hydrostatic pressure means that as blood moves along the capillary, fluid moves out through its pores and into the interstitial space. This movement means that the pressure exerted by the blood will become lower, as the blood moves along the capillary, from the arterial to the venous end.

What are the functions of hydrostatic skeleton?

The hydrostatic skeleton is made possible by closed fluid-filled internal spaces of the body. It is of great importance in a wide variety of animal groups because it permits the antagonistic action of muscles used in locomotion and other movements.

What are the adaptive features of nematodes?

The most pronounced morphological adaptations of nematodes for plant parasitism include a hollow, protrusible stylet (feeding spear) connected to three esophageal gland cells that express products secreted into plant tissues through the stylet.

What are the characteristics of nematodes the intestinal roundworms?

Nematodes (roundworms) have elongated, bilaterally long cylindrical bodies which contain an intestinal system and a large body cavity. Parasitic nematodes vary in length from several millimetres to approximately 2 metres and have larval stages and adult worms of both sexes.

Do nematodes have circular muscles?

Recall that nematodes lack circular muscles, and can only move by contracting their longitudinal muscles, thus thrashing and wriggling rather than crawling.

What is the role of nematode body wall in its locomotion?

It is permeable to allow ions and water to pass through and therefore plays a key role in maintaining the hydrostatic pressure, which in most nematodes is relatively high inside the worm. The cuticle also acts as an anchoring point during locomotion as a skeleton does in mammalian species.

What is the body cavity of nematodes?

Nematodes lack a true coelom (body cavity) since their internal cavity is not lined by cells originating from the embryonic mesoderm. Instead, they possess a fluid-filled pseudocoel (incomplete coelum) that contains the intestine and reproductive organs.

What supports the body of a nematode?

Roundworms (nematodes) are bilaterally symmetrical, worm-like organisms that are surrounded by a strong, flexible noncellular layer called a cuticle. Their body plan is simple. The cuticle is secreted by and covers a layer of epidermal cells.

What is a characteristic of a hydrostatic skeleton quizlet?

Hydrostatic skeleton. is a structure found in many ectothermic organisms and soft-bodied animals consisting of a fluid-filled cavity, the coelom, surrounded by muscles.

What will happen when longitudinal muscles contract in nematodes hydrostatic skeleton?

Most hydrostatic skeletons are more or less cylindrical, so longitudinal muscles will tend to shorten them and also widen them due to constant volume, whereas circumferential muscles will tend to do the opposite.

How does hydrostatic skeleton differ from structural skeleton?

A hydrostatic skeleton is formed by a fluid-filled compartment held under hydrostatic pressure; movement is created by the muscles producing pressure on the fluid. ... An endoskeleton is an internal skeleton composed of hard, mineralized tissue that also enables movement by attachment to muscles.