5a- Define muscle fatigue (b) What happens to force if fused tetanus is maintained? And (c)...
5a- Define muscle fatigue (b) What happens to force if fused tetanus is maintained? And (c) Explain one possible cause of muscle fatigue.
Homework Answers
A. Muscle fatigue is the decrease in ability of a muscle to generate force. It may be due to vigorous exercise but abnormal fatigue may be caused by barriers to or interference with the different stages of muscle contraction. Fatigue is a feeling of tiredness or exhaustion or a need to rest because of lack of energy or strength.Fatigue may result from overwork, poor sleep, worry, boredom, or lack of exercise.
B. Tetanus is a sustained muscle contraction results when the motor nerve that innervates a skeletal muscle emits action potentials at a very high rate. This is generally observed during summation of muscle contraction. During tetanic contractions, muscles can shorten, lengthen or remain constant length. Prolonged tetany leads to Rigor mortis - caused by chemical changes in the muscles cause the limbs to stiffen.
C. Muscle fatigue is the decline in ability of a muscle to generate force. It can be a result of vigorous exercise but abnormal fatigue may be caused by barriers to or interference with the different stages of muscle contraction
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5a- Define muscle fatigue (b) What happens to force if fused
tetanus is maintained? And (c)...
10) When a muscle fiber enters fatigue, which metabolite below typically does NOT significantly change in...
10) When a muscle fiber enters fatigue, which metabolite below typically does NOT significantly change in concentration? A) ATP B) P G Ca2+ D) Lactic acid E) K* 11) Which is the most accurate definition of a motor unit? A) The mimimum number of muscle fibers required to move a load B) The number of crossbridges formed in a given length of muscle fiber C) The number of muscles innervated by a single nerve D) One motor neuron and all...
8. Which muscle is adapted to be highly resistant to fatigue? a) Cardiac b) Striped c)...
8. Which muscle is adapted to be highly resistant to fatigue? a) Cardiac b) Striped c) Unstriped d) Voluntary 9. S pongy bone is ound in the interior of both the ends and long a) parts obones b) restricted to the long parts of bones c) transitional between the ends and long parts of bones d) restricted to the ends of bones
97) If we cannot get enough oxygen to the muscle cells, what happens? a) The muscle...
97) If we cannot get enough oxygen to the muscle cells, what happens? a) The muscle cell stops contracting. b) The muscle cell makes less ATP c) The muscle cell continues with the Kreb's cycle but not the electron transport chain d) All of these are correct
QUESTION 3 A 35 yr old man is seen by his physician for headache, fatigue, muscle...
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muscle physiology lab Muscle Physiology Melissa e 1 - Fatigue in the forearm r pulse and...
muscle physiology lab
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2. The trapezius muscle is a large muscle located in the posterior superior thoracic region. The...
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1. Wallerian Degeneration A) describes what happens to the axon when there is myelinopathy B) is a specific disease C) rarely occurs in response to traumatic injury to the axon D) None of the above 2. Explain in 3 sentences or less what is the difference between regeneration and denervation. 3. Explain in 2 sentences or less how a muscle fiber that lost its connection to a motor neuron could regain a connection to a motor neuron.
10) When a muscle fiber enters fatigue, which metabolite below typically does NOT significantly change in concentration? A) ATP B) P G Ca2+ D) Lactic acid E) K* 11) Which is the most accurate definition of a motor unit? A) The mimimum number of muscle fibers required to move a load B) The number of crossbridges formed in a given length of muscle fiber C) The number of muscles innervated by a single nerve D) One motor neuron and all...
8. Which muscle is adapted to be highly resistant to fatigue? a) Cardiac b) Striped c) Unstriped d) Voluntary 9. S pongy bone is ound in the interior of both the ends and long a) parts obones b) restricted to the long parts of bones c) transitional between the ends and long parts of bones d) restricted to the ends of bones
97) If we cannot get enough oxygen to the muscle cells, what happens? a) The muscle cell stops contracting. b) The muscle cell makes less ATP c) The muscle cell continues with the Kreb's cycle but not the electron transport chain d) All of these are correct
QUESTION 3 A 35 yr old man is seen by his physician for headache, fatigue, muscle weakness, feeling tired all the time. He is diagnosed with hypertension and mild depression. His physician prescribes Propanolol, a beta blocker that should reduce production of epinephrine and therefore control his blood pressure. He is also asked to increase his exercise levels to combat depression. On next month's follow-up visit, patient's blood pressure was noted to be high even though patient reports complying with...
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muscle physiology lab
Muscle Physiology Melissa e 1 - Fatigue in the forearm r pulse and record your starting heart rate- 0 1 BPM. esignate a counter, time recorder, and snapper Sing their dominant arm, the snapper should snap as fast as possible while counting their snaps out le counter should record the number of snaps in each 30 second interval (i.e. 30 snaps in the 0-30 s terval, 20 snaps in the 30-60 seconds interval) so that you have...
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