Rat Dissection

Website: http://www.buzzle.com/articles/anatomy-of-rat.html
The rat belongs to the class Mammalia and is in subphylum Vertebrata.
External:

• head
• neck
• chest
• pectoral (the place where the forelegs attach)
• abdomen
• pelvic (the place where the hindlegs attach)
• tail

Internal:

• liver
• stomach
• spleen
• small intestine
• pancreas
• large intestine(also called colon)
• cecum (structure beween small and large intestine)
• rectum
• kidneys
• ureter (tube that connects kidney to bladder)
• urinary bladder
• male reproductive:
• testes
• seminal vesicles
• prostate gland
• penis
• female reproductive:
• uterine horns (below the kidney)
• oviduct (tiny tube that connects uterine horn to ovary)
• ovary

Bullfrog Dissection

Website: http://www.biologycorner.com/worksheets/bullfrog/bullfrog-external.html
Bullfrogs:

• are in class Amphibia
•  main diet is insects
• tetrapods (use four legs)
• aquatic and terrestrial

External:

• limbs: attached to side
• 2 forelimbs (4 fingers) and 2 hindlimbs (5 webbed toes-adapted for swimming)
• Skin: thin and smooth, helps the frog breathe
• Eyes-large (adapted so that they can spot insects)
• nictiating membrane: transparent eyelid that keeps the eyes clean without blocking the frog's vision
• Tympanic membrane (external eardrum)
• picks up vibrations from water or air (sound)
• ampliphies the sound the frog makes (mating)
• external nares (nostrils) and internal nares (opening inside-found at roof of mouth)
• 3 sets of teeth:
• premaxillary (along middle)
• maxillary (along sides)
• vomerine (roof of mouth)
• Glottis: slit where air passes in and out of the larynx (voice box)
• Vocal Sacs:
• Eustachian tubes: connect to the middle ear-helps equalize pressure when frog dives into water

Internal:
Website: http://www.biologycorner.com/bio2/notes-frog.html

• Liver: large with 3 lobes, makes bile (breaks down fat, aids in digestion)
• Gall Bladder: bile from liver is stored here
• Esophagus: tube that leads to the stomach
• Stomach: breaks down food
• Small intestine: absorb nutrients from food
• Large intestine: collects waste, absorbs water
• Rectum: opens into cloaca
• Fat bodies: yellow strictures (finger-like projections)
• Pancreas: makes insulin (aids in digestion), light-coloured lobed organ
• Spleen: stores blood, deep red, round organ
• Kidney: filter blood, flattened reddish organs
• Adrenal Glands: yellow bandlike organs on ventral surface of kidney
• Archinephric Ducts: carry urine and sperm in male
• Bladder: thin, translucent sac
• Testes: make sperm
• Cloaca: where eggs, sperm, urine and feces exit
• Ovaries: makes egg
• Oviducts: where eggs travel through, long white coils
• ovisac: holds eggs prior to spawning
• Right atrium:
• Left atrium:
• Ventricle:
• Truncus arteriosus:
• Posterior vena cava:
• Sinus venosus:
• Systemic circuit:
• Pulmonary circuit:
• Lungs:

Perch Dissection

http://visual.merriam-webster.com/animal-kingdom/fishes/bony-fish/anatomy-perch.php

External:

Internal:

• air/swim bladder: flexible, air-filled sac, allows it to stay buoyant at a certain depth
• kidney: elimintate waste

• esophagus: carries food to the stomach
• pharynx:
• mouth:
• heart: helps blood circulate
• liver: helps digestion
• intestine: part if the digestive tract between the stomach and the anus-nutrients are absorbed and the waste is transformed into fecal matter
• stomach: recieves food to be digested
• anus: gets rid of fecal matter
• eyes:
• gills: