Frog Dissection

B. Internal: The dissectors: o used hands to turn frog ventral side up, head anterior, hind limbs posterior o used forceps to lift fold of skin directly anterior to hind limbs o used scissors to make small superficial cut o inserted scissors into cut and continued superficially anterior medial through mandible o used scissors to make 2 lateral superficial cuts just anterior to hind limbs on either side of medial cut and stopped before reaching dorsal surface o used scissors to make 2 lateral superficial cuts just posterior to forelimbs on either side of medial cut and stopped before reaching dorsal surface o used scissors to cut connective tissue between skin and muscles o peeled away left flap of skin with hands and followed blood vessels with dissecting needle o used scissors to cut of left flap of skin and help up to light with hands to notice blood vessels and thinness o used scissors to cut off right flap of skin o inserted scissors into anus and cut anterior through thin abdominal muscles, through the pectoral girdle, and up through the mandible o used scissors to make 2 lateral cuts just anterior to hind limbs on either side of medial cut and stopped in same place as skin o used scissors to make 2 lateral cuts just posterior to forelimbs on either side of medial cut and stopped in same place as skin o used scissors to cut off left and right flaps of abdominal muscles to make clear window o used hands to sex frog by moving aside organs and located oviducts on top of kidney and noticed absence of eggs o used forceps to lift 3-lobed liver to view stomach and intestines o used forceps to pull out small intestine to view mesentery o used dissecting needle to locate gallbladder right under liver and noticed filled with bile o used forceps to lift small intestine to view spleen embedded against large intestine o used forceps and lifted 3-lobed liver and used