What would you like to do?
What is the function of the suprapharyngeal ganglia in a earthworm?
Effects of removal and regeneration of the suprapharyngeal ganglion on learning, retention, extinction and negative movements of Lumbricus terrestris were studied in a T maze with electrical punishment and a sandpaper cue at the incorrect side and a dark goal box at the correct side. Learning, retention and negative movements at the choice point were not affected by ganglionectomy or regeneration. Extinction was prolonged, and negative reactions to the sandpaper were increased, by ganglionectomy after training. Negative movements in the maze stem were decreased by ganglionectomy under both learning and extinction conditions, and increased abruptly after 30--50 days of postoperative training. Reactivity to shock decreased when ganglionectomy followed, but not when it preceded, learning. Frequency of correct turns was the only measure clearly changed by learning. Negative movements at the choice point tended to decrease, but inconsistently during learning. There was no evidence that discrimination of sandpaper contributed to learning. Ten trials per day produced fatigue but was not detrimental to health or vigor.
Was this answer useful?
Thanks for the feedback!
The function of ganglia in the human body is to get information from the photoreceptors and collectively transmit image-forming and non-image forming visual information from t…he retina to regions in the brain.
The esophagus of an earthworm is part of the earthworm's digestive tract, between the pharynx and the crop, and it basically just moves the earthworm's food from the phary…nx to the crop. It also helps to keep the food from backing up (making the worm barf/throw up).
Setae are external bristles that provide traction for the movement of a worm.
the crop is used to store food so that when there is no food it can take food from the crop. the crop is also used take food to the crop when there is a lot of food they do th…is to store food for later.
The function is to push out the unused waste.
The nephridia are tubelike structures that filter wastes from the blood
The intestines help carry the earthworm's waste to the anus, where it is expelled from the worm.
To release sperm to fertilize the eggs of another earthworm
it helps the worm move
allow oxygen to pass into the coelomic fluid and blood of the worm
It works as the brain and is part of the nervous system
The Ganglia is a part of the nervous system The Ganglia is a mass of nerve tissue existing outside the central nervous system. To make a long story short it's a brain. …
Regulating voluntary motor activities.it helps to regulate voluntary motor activities.Starting, stopping, and monitoring arm swinging and galt control of muscle tone … control of reflex muscular activity planning and programming of motor activities converison of abstract thought into action cognitive control of motor activity control eye movement while doing skillfull work semi-automatic movements (eg: swinging of hands while walking, facial expressions while talking)
it swallows the food
Ganglia are clusters of nerve cells. They are mostly associated with the sympathetic division of the autonomic nervous system in vertebrates, where their functions are p…articularly related to the activities of the heart, glands, and involuntary muscles..
the gizzard helps store the food temporarily until it goes to the intestine