0Ii Baughman MGCCC BIO 2514 Chlo onuy After myoblasts fuse during embryonic deve
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0Ii Baughman MGCCC BIO 2514 Chlo onuy After myoblasts fuse during embryonic development, the muscle loses the ability to undergo what process? (pg. 322) Aponeurosis (pg. 329) Compare and contrast structure and function of skeletal, cardiac, and smooth muscle. (pg. 328) Contrast atrophy and hypertrophy in skeletal muscles. (pg. 352) Describe aerobic cellular respiration in muscles. (pg. 346-347) Epimysium (pg. 329) Explain the difference between concentric, eccentric, and isometric contraction (pg. 351) How much body weight on average is muscle tissue? (pg. 327) In what direction is myosin pulled inside the sarcomere during a muscle contraction? (pg. 338) In what type muscle tissue do we find autorhythmic cells with intercalated disks? (pg. 354) List the major functions of muscle tissue. (pg. 328) Location and function of actin and myosin. (pp. 334-335) Location and function of Troponin and tropomyosin (pg. 335) Motor unit (pg. 347) Myasthenia gravis (pg. 359) Myofibrils (pg. 331) Synaptic end bulbs (pg. 341) What are cross-bridges? (pg. 339) What are the smallest and weakest muscle fibers in the human body? (pg. 351) What are the three sources of ATP for a muscle contraction? (pg. 345) What energizes the myosin head to orient it toward actin during a muscle contraction? (pg. 339) What happens to the length of a muscle in an isometric contraction? (pg. 350) What is a cramp? (pg. 359) What is a twitch contraction? (pg. 348) What is acetylcholine? Why do it's affects only last for a brief time? (pp. 341-343) What is creatine? Why is it important? How long can ATP and Creatine sustain a maximum muscle contraction? (pg. 345) What is extensibility? (pg. 329) What is fused tetanus? (pg. 349) What is hyperplasia? (pg. 356) What is motor unit recruitment? (pg. 349) What is oxygen debt? Why is it important? (pg. 347) What is the function of the sarcoplasmic reticulum? (pg. 331, 334) What is the function of the terminal cisterns of the sarcoplasmic reticulum? (pg. 331, 334) What is the importance of the synaptic cleft of a neuromuscular junction? (pg. 341) What is the M line of a sarcomere? (pg. 334) What is the refractory period? (pg. 348) What is titin? Where is it located in a myofibril? (pp. 334-336) What two chemicals are necessary for sustaining a muscle contraction? (pg. 339) Where is ATPase located in the muscle? (pg. 339) Which muscle fibers contain the most glycogen? (pg. 351)Explanation / Answer
1.After myoblasts fuse during embryonic..........
Ans Myogenesis.
2.Aponeurosis, it's a flat sheet or ribbon of tendon like material that holds a muscle or connects it with the part that the muscle moves.
It is composed of dense fibrous connective tissue containing fibroblasts and collagenous fibres . Structurally similar to tendons and ligaments.
3.Epimysium.
Epimysium is connective tissue that wraps whole muscle fibre.
4.Aerobic cellular respiration is the process in which our cells break down food to release energy which cells use to perform their life functions.
5.How much body weight on average is muscle tissue
And 35% or in between 30 to 40 % of total body weight.
6.Functions of muscle tissue
Muscle tissue provides
a) posture and body support
b) locomotion and
c) heat production.
D.provide energy storage
E.Circulation
F.help in communication.
7.A cramp is a sudden and involuntary contraction of one or more of your muscles.its over shortening non damaging and temporary.
8.functions of actin and myosin .
Both actin and myosin bind or work with each other to perform various movements..
Sliding of these muscles cause muscle contraction.
9.A motor unit is made up of a single nerve cell or neuron that innervates a group of skeletal muscles.motor units often work together to coordinate the contractions of a single muscle.
10.The contraction generated by a single action potential is called a muscle twitch.
11.ATPases are located in mitochondria.
12.Hyperplasia:
It is the increase in the number of normal cells in a tissue or an organ. Hyperplasia can represent a precancerous condition.
13.when there is no relaxation at all between stimuli, but rather a smooth sustained contraction, it is called “Fused Tetanus.
14.Myasthenia gravis is a disease which causes weakness in your voluntary muscles.
15.The main function of the sarcoplasmic reticulum is to store calcium ions (Ca2+).
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