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6 Feb 2011
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Jan. 18 lecture notes
-Metameric body: serial repetition of body parts. Extends to
nervous system: ganglia
respiratory system: arteries and
veins
excretory system: tubules
-Retrograde waves: Wave travels back through body, the animal moves forward
-constrictions and swellings (bulges)
-Annelid, metamerism, and locomotion of segmented worms
Cloem contract in circular muscles
-lumbricus is used for burrowing
-Metamerism is an adaptation for locomotion
-The paddles on a flat worm reduce coelomic fluid and septums. The paddles are used for
locomotion
Exoskeleton: dicondylic joint, mandibular apodemes
-Role of tentorium is resisting stress and strain produced by chewing actions
-Condyl: where the dicondylic are inserted
-abductor apodeme is on the cheek
-Apodeme is not a muscle. It is a projection of the cuticle into the body
Crayfish cheliped and segments articulated by the dicondylic joints
-axis of rotation in arthropods is adapted
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Document Summary

Extends to nervous system: ganglia respiratory system: arteries and veins excretory system: tubules. Retrograde waves: wave travels back through body, the animal moves forward. The paddles on a flat worm reduce coelomic fluid and septums. Role of tentorium is resisting stress and strain produced by chewing actions. It is a projection of the cuticle into the body. Crayfish cheliped and segments articulated by the dicondylic joints. Axis of rotation in arthropods is adapted www. notesolution. com. May also move mainly in 1 plane like dycondlic of arthropods or maybe a ball and socket, and move in multiple ways. Endoskeletal muscle antagonists involved in frog jump and gastromeius vs tiabial anticus longus. Gastronemius originates from the femur and inserts into the ankle. Adapted with a bone missing where the knee cap would be to allow the gastronemius to stretch all the way around. Frogs pull their eyes in while jumping to streamline body. Antagonist to abductor muscle is the protein abductin.

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