Rat I s08

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Unformatted text preview: Rat I Rat I Anatomy of the Rat Anatomy of the Rat • Today we will cover – External – Skeletal – Muscular – Digestive Systems Terminology Terminology • • • • • • • • • • Dorsal – back or upper surface Ventral – belly or lower surface Lateral – the side Anterior – the front or head end Posterior – the hind or tail end Medial – toward the midline of the body Proximal – closer to the midline of the body Distal – farther from the midline of the body Superficial – near the surface Deep – a distance below the surface External Features External Features • • Hair Body regions the eyes – Head, trunk, appendages, tail • Vibrissae – long hairs found behind the nose and above • Ears, Eyes, Nares (nose), Mouth • Reproductive structures – Guides the rat in darkness • Opening of excretory and digestive systems – Male – scrotal sac (testes) – Female – mammary glands (6 pairs) Skeletal System Skeletal System • There are lots of bones, if you want to memorize them all, have fun • Compare the rat and human skeletal system Digestive System Digestive System • • • • • • • • • • Mouth Salivary glands Viscera Liver Stomach Pancreas Spleen Small intestine – ileum, jejunum, duodenum Caecum – junction of small and large intestine Large intestine aka colon – All the organs of the body cavity Rat Dissection Rat Dissection • • • Wash rat before making incisions Wash body cavity after making incisions Keep the rat in good condition – You will use your own rat for your practical test • Know the organs and functions...
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This note was uploaded on 02/02/2010 for the course BIO 101 taught by Professor Houlihan during the Spring '08 term at UMass (Amherst).

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