Roundworm Phylum Nematodoa Picture - Male (drawn) (practice drawing female) Live in digestive tract and continue to cycle through Females are longer Males posterior end curves and may have pair of copulatory spicules (male is shown)
dioecious Pg 155 fig 10.4
Pg 157 fig 10.9 Phylum Nematodoa Ancylostoma duodenale/Necator americanus Live in the small intestine then eggs are released in feces. The larvae live in the soil until they contact human skin, which they bury through to reach the bloodstream.
a muscular cavity at the end of the large intestine through which digestive wastes, urine, and eggs or sperm leave the body
Roundworm Phylum Nematodoa causes disease trichinosis, encysted worm in meat is eaten then enter body. Never exit.
tongue-shaped structure used for feeding by snails and slugs slide had green shape with brown teeth on it (look at notes for drawing)
In class Squids, Octopus, Nautilus Most advanced mollusks Possess a large head with conspicuous eyes, complex nervous system, complex behavior, 8 or 10 arms, shell often internal, reduced, or absent sexually dimorphis know ventral and dorsal surface
sexual differences in males and females ex. octopi will have a odd end to a tentacle to give female sperm
Clams and mussels Life cycle - eggs fertilized in the brood pouches, they develope into tiny larvae (glochidia) which are released from the mussel into the fish (lured to the mussel) to be parasites on the fish. They detach after 10-30 days and grow up on the bottom. A-Mantel (other pin) B- Foot C- Gills
Cephalopoda larger rounded head
Cephalopoda pointed head with fans, smaller
Cephalopoda snail like shell with tentacles that grab, swims (not a snail!)
Gastropoda looks like a vagina
Gastropoda (on phone)
Term that describes. An animal that possesses a true coelom (a body cavity lined by tissue completely derived from mesoderm).
Gastropoda shell, insides, and eggs in strip displayed
Looks like guitar pick, or a heart that is breaking. Hole in the center for clamping on. Grab onto fish and spread.
Nematoda Thick body with quick tapering to mouth with jaws and teeth
Nematoda hairy end
larva in muscle muscle is little circular cells with line that is larva