Pithing and Muscle Preparation. The method for pithing the frog and preparing the frog gastrocnemius muscle will be described by the instructor. The object of the pithing operation is to destroy specified parts of the central nervous system. In this case the frog is pithed as a means of immobilization and anaesthesia. Generally‚ pithing the spinal cord only is adequate. To skin the frog leg‚ cut the skin all around the upper end of the leg. Pull the skin down the leg‚ freeing it from
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NAME LAB TIME/DATE _ Microscopic Anatomy and Organization of Skeletal Muscle Skeletal Muscle Cells and Their Packaging into Muscles 1. Use the items in the key to correctly identify the structures described below. g; perimysium c; fascicle Key: a. b. c. endomysium epimysium fascicle fiber myofibril myofilament perimysium sarcolemma sarcomere sarcoplasm tendon 1. 2. 3. 4. 5. 6. 7. connective tissue ensheathing a bundle of muscle cells bundle of muscle cells contractile unit of muscle
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eliminating wastes through organs such as the kidney‚ thus the heart delivers and helps maintain nutrient and waste composition throughout the body. The heart‚ like all muscle cells‚ releases ionic calcium when stimulated which binds to troponin which in turn causes tropomyosin to uncover the myosin-actin binding sites on the muscle. Temperature has effects on the metabolism and activity of all cells. Warmer temperatures increase the kinetic energy of molecules in cells‚ providing more energy which
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Date:________________ Observations – Label ALL Parts of the Frog External Anatomy of the Frog – External Anatomy #7 [pic] Mouthparts of the Frog – External Anatomy #12 [pic] Digestive system and other Parts of the Frog – Digestive System #3 [pic] Urogenital System of the Frog – Urogenital System #4 [pic] The Frog Heart – Circulatory System #3 [pic] Questions: Use your knowledge of frogs to answer the questions below. 1. Describe how the eyes of a frog close. ________________________________ __________
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Frog Dissection Manual 1. 2. Place the frog on the dissecting pan. Do not pin it down. Use these descriptions and the picture to identify each of the following external structures. A. Head – the anterior end of the frog extending to and including the eardrums mouth – the large opening at the anterior end of the head made up of a maxilla and mandible maxilla – the upper jaw bone mandible – the lower jaw bone external nares (i.e. nostrils) – two small openings on the dorsal surface of the
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Rivalry between the United States and the Soviet Union for control over the postwar world emerged before World War II had even ended. U.S. presidents Franklin D. Roosevelt ‚ Harry S.Truman‚ and Soviet premier Joseph Stalin never really trusted one another‚ even while working together to defeat the Nazis. This mutual mistrust actually began as far back as 1917‚ when the United States refused to recognize the new Bolshevik government after the Russian Revolution. Stalin also resented the fact that
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European Journal of Social Sciences ISSN 1450-2267 Vol.30 No.2 (2012)‚ pp. 339-351 © EuroJournals Publishing‚ Inc. 2012 http://www.europeanjournalofsocialsciences.com A Study on the Impact of Occupational Stress among Teachers on Job Satisfaction and Job Involvement – An Empirical Study C. Muthuvelayutham Associate Professor‚ Directorate of Online and Distance Education (DODE) Anna University of Technology‚ Coimbatore 47‚ Tamil Nadu‚ India E-mail: drmuthu2009@gmail.com H. Mohanasundaram
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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
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Good morning family and friends of the beloved Eugina S. Frog. My sister and I have been through a lot of hardships together‚ from our father passing and us hoping to a new pond. Eugina was a curious and unique frog‚ she brought happiness everywhere she went. She was well-known on the west side of the pond. Eugina lived to be twelve years old‚ she had 1‚000‚200 babies with her husband Robert A. Frog. In the twelve years that Eugina lived‚ she accomplished many goals that she planned to succeed. For
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nothing similar to the expected results‚ the whole experiment was a total fail. The frog muscle was heated for too long‚ so it stiffened before any recording of the results by the machine occurred‚ and there’s also a high probably that the muscle that we assume to have been exposed to heat for too long‚ probably died before the experiment commenced; the reason behind this is that one of the experimenters held the muscle in her bare hand(that was probably salty because of sweat‚ and because of this it
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