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In which direction do the muscle fibers of a worm extend?
The muscle fibers of an earthworm run vertically along the entirety of the worm.
What involves over 22 muscle groups and includes the buccal phase and the pharyngeal-esophageal phase?
The body process that involves over 22 muscle groups and includes the buccal phase and the pharyngeal-esophageal phase is called swallowing. Another term for it is deglutition.
What muscle is worm like?
tounge
What muscles act to propel a food bolus down the length of the pharynx to the esophagus?
Pharyngeal constrictor muscles (superior, middle and inferior)
How can the worm survive without bones?
Although the worm has not bones, it does have a hydro scleten which is basicly water and it allows the worm to move by contracting muscle's.
What are main features of segmented worm?
they have 2 layers of muscle
Do lancelets have pharyngeal pouches?
Yes they have Pharyngeal Pouches!!!=)
Which of the parts of the worm's body includes in the excretory system?
An earthworm's excretory system contains pairs of integumentary, septal, and pharyngeal nephridia. Each nephridia is located in a different segment of the body.
What parts of an earthworms body are in the excretory system?
The excretory system of a worm is comprised of three pairs nephridia. Each type of nephridia, the integumentary, septal, and pharyngeal, is located in a different segment.
What body part helps a worm move?
contractions like muscle
What parts of the earthworms body are including in the excretory system?
The excretory system of a worm is comprised of three pairs nephridia. Each type of nephridia, the integumentary, septal, and pharyngeal, is located in a different segment.
What is pharyngeal erythema?
Pharyngeal erythema is also known as "red throat" which is usually a sign of infection or inflammation. For example, symptoms of strep throat can include pharyngeal erythema.
