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What muscles act to propel a food bolus down the length of the pharynx to the esophagus?
Pharyngeal constrictor muscles (superior, middle and inferior)
What happen to the shape of the earthworm when the circular muscles contract?
When the circular muscles of an earthworm contract, the segments of its body become thinner and longer, causing the earthworm to elongate and appear stretched out.
What function does the circular muscle serve in the earthworm?
Circular muscles help in extension and narrowing of the body of the earthworm. When circular muscles contract the protractor muscles relax causing the retractor muscles to contract, thus withdrawing the setae.
Can a earthworm move?
Yes they can they use there muscles in there back
Which organelle contributes the energy for muscles in an earthworm?
mitcochondria
Describe briefly the function of the pharyngeal constrictor muscles?
The main purpose of the pharyngeal constrictor muscles is to allow food received through the larynx to pass through the esophagus. this is achieved when the elevator muscles relax, the pharynx descends and the constrictors contract upon the bolus of food. Bolus- a mass of food that has been chewed.
What parts of the worms body is included in the exceretory 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.
Contraction of an earthworm's longitudinal muscles?
pulls the posterior end forward
Is the pharynx a muscle?
The pharynx is an anatomical region that is located posterior to the oral and nasal cavities. There are muscles that make up the pharynx including the superior pharyngeal constrictor, the palatopharyngeus, stylopharyngeus and salpingopharyngeus. It's more of a muscular tube than an actual muscle.
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 has the author Carl Kester Dorsey written?
Carl Kester Dorsey has written: 'The musculature of the labrum, labium and pharyngeal regions of adult and immature Coleoptera' -- subject- s -: Insects, Anatomy, Muscles, Beetles 'The musculature of the labrum, labium, and pharyngeal region of adult and immature Coleoptera ..' -- subject- s -: Anatomy, Muscles, Beetles
How do the earthworm maintain its shape?
using circular muscles or use longitudinal muscles to squeeze itself flat
