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8 Cards in this Set
- Front
- Back
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Muscle tissue makes up about __ of the body weight. It is the most __ tissue. About one half of the physical and metabolic processes occur in the muscle during __. During severe physical exertion, three fourths of the total metabolism is due to muscle activity. The composition of the muscle varies with the animal __, the type of __, and the __ state of the animal.
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40%
active rest species muscle physiological |
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Objectives:
To identify the components of the muscle tissue |
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Test the solubility of myosin in the following solvents:
a. water b. NaCl solution c. dilute HCl d. NaOH solution |
a. soluble
b. soluble c. insoluble d. insoluble |
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Get a small amount of myosin and dissolve in 1 ml of water. Shake. Result:
a. Biuret b. Xanthoproteic |
a. light violet
b. light yellow |
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Test the filtrate reserved in step 3 for Biuret and Xanthroproteic test. Result:
a. Biuret B. Xanthoproteic |
a. darker violet
b. darker yellow |
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Dissolve the remaining myosin in water and test for the presence of:
a. chlorides b. phosphates c. magnesium d. calcium |
a. white curdy ppt
b. egg yellow c. white crystalline d. white octahedral crystal |
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How would you compare the components of the muscle tissue of the mammalian and avian species?
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MAMMALS:
3 types of mm -- skeletal, cardiac, and smooth mm uses actin against myosin to create contraction skeletal mm contraction is stimulated by electrical impulses transmitted by the nerves, the motor nerves, and motor neurons. cardiac and smooth mm contractions and stimulated by internal pacemaker cells AVIAN: 175 different mm mainly controlling the wings, skin, and legs largest mm are pectorals (breast mm) --> controls the wings = provides powerful wing stroke essential for flight skin mm helps the bird in flight by adjusting the feathers only few mm in trunk and tail, but they are very strong and essential for the bird the pygostyle controls the movement in the tails and controls the feathers in tail |
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In conclusion, the muscular tissue makes up about 40% of the body weight. It is the most active tissue and compromises the following: __, __, __, __, and __.
The addition of salt __ or lowers the protein (myosin) content. In addition, myosin is __ in water and NaCl solution and __ in dilute HCl and NaOH sol. The composition of the mm varies with the animal species, the type of mm, and they physiological state of the animal. |
protein
chlorides phosphates magnesium calcium salt soluble insoluble |
