Human Anatomy (9th Edition)
9th Edition
ISBN: 9780134320762
Author: Frederic H. Martini, Robert B. Tallitsch, Judi L. Nath
Publisher: PEARSON
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Chapter 9, Problem 2CT
Summary Introduction
To analyze:
The anatomical fact on which the practice of leg muscle biopsies(explained in question) is based.
Introduction:
Muscles are the part of the muscular system, which is specialized in cells that are responsible for providing locomotion and movement to the human body. Around 600 muscles are present in the human body and comprise 43% (percent) of the body weight.
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Students have asked these similar questions
Muscular endurance is defined as the:
O a) ability of a muscle to contract
repeatedly over an extended
period of time
b) amount of force a muscle can
produce with a single maximal
effort
O c) ability to move the joints through
a full range of motion
O d) amount of time required to
contract a muscle completely
Which of these is the proper sequence of these events of muscle contraction
1) Action potential propagating down into the T-tubule
2) Power stroke
3) Ca+2 is released from the sarcoplasmic reticulum
4) The tropomyosin shifts out of the way thereby exposing the active sites of the actin
Question 7 options:
a)
1 à 3 à 4 à 2
b)
4 à 3 à 2 à 1
c)
1 à 4 à 2 à 3
d)
3 à 1 à 4 à 2
A client asks your advice on how to best prevent lean body mass loss through diet. What evidence-based recommendation can you provide to optimize muscle synthesis?
Question 75 options:
a)
Increase your protein intake at dinner to achieve a total of 1.5 g/kg/day
b)
Include protein shakes with breakfast each day
c)
Include 20-30 g of protein with each meal throughout the day
d)
Choose pasta-containing meals for dinner to promote carb loading and prevent muscle wasting during overnight fasting
Chapter 9 Solutions
Human Anatomy (9th Edition)
Ch. 9 - 1. Active sites on actin become available for...Ch. 9 - Prob. 2RFTCh. 9 - Prob. 3RFTCh. 9 - 4. Another name for a muscle that is a prime mover...Ch. 9 - Prob. 5RFTCh. 9 - Prob. 6RFTCh. 9 - 7. The theory that explains muscle contraction is...Ch. 9 - Prob. 8RFTCh. 9 - Label the illustrations to the right as...Ch. 9 - Prob. 1RC
Ch. 9 - 2. The ability to recover from injuries in older...Ch. 9 - Prob. 3RCCh. 9 - Prob. 4RCCh. 9 - Prob. 5RCCh. 9 - A motor unit from a skeletal muscle contains 1500...Ch. 9 - 7. What is the role of the zone of overlap in...Ch. 9 - Several anatomy students take up weight lifting...Ch. 9 - Prob. 2CT
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 18) Which of the following is NOT correct statement regarding muscle fatigue? A) Gradual increase in effort required to maintain a constant submaximal task B) There are two types of muscle fatigues, peripheral fatigue and central fatigue C) Force declines sooner & to a greater extent than velocity D) Slow oxidative muscles are less resistant to fatigue than fast glycolytic muscles 19) Which statement is NOT correct regarding disuse atrophy and skeletal muscle? A) Protein synthesis is decreased B) Protein degradation is increased C) There is a myofiber transition towards a slower more oxidative muscle D) Anabolic hormones and growth factors cannot completely off set disuse atrophyarrow_forwardTo build individual muscle strength and muscle girth (i.e. bulk up), it is best to: O a) do resistance exercises for each muscle at least 6 days per week b) use medium resistance with medium number of repetitions O c) use heavy resistance with few repetitions for multiple sets d) use light resistance with many repetitionsarrow_forwardRelate these conditions to the normal contraction of muscle fibers. Identify the ultimate effect on the ultrastructure and physiology of muscle fibers.1. Muscle hypertrophy2. Muscle atrophy3. Muscle hyperplasia4. Rigor mortis5. Muscular dystrophyarrow_forward
- Muscular strength is defined as the: a) ability of a muscle to contract with maximal force O b) ability to move the joints through a full range of motion O c) ability to sustain a given level of muscular tension over time d) amount of force a muscle can produce repeatedly over 60 secondsarrow_forwardIf you completely stopped working out for 6 months, the following would occur: O a) a decrease in muscle fiber type O b) an increase in muscle fiber size O c) an increase in muscle fiber number O d) a decrease in muscle fiber sizearrow_forwardAn increase in the cross sectional area of muscle is known as hypertrophy. Hypertrophy allows muscle to produce more force due primarily to: a.) Increased number of potential cross bridges that can be formed (i.e., actin-myosin interactions) b.) Increased number of T-Tubules c.) Increased ability to activate the muscle d.) Increased calcium release from the sarcoplasmic reticulumarrow_forward
- The changes related to muscle mobility are the most obvious in older adult. There can be measurable differences in muscle strength, endurance, range of motion, coordination, elasticity, and flexibility of connective tissue. Regular exercise is necessary to prevent a decrease in muscle strength. Exercise helps to strengthen muscles and keeps joints, tendons, and ligaments more flexible, allowing for a more active lifestyle. Please research and describe some activities you could recommend to an elderly patient to stay active to help them maintain muscle massarrow_forwardDescribe the changes that occur in skeletal muscle as a result of endurance training. Include a brief discussion on how endurance training improves acid-base balance during exercise. What physiological benefits may happen for an older adult who begins a progressive resistance-training program?arrow_forwardWhich of the following step(s) about the excitation of skeletal muscle is/are incorrect? 1. Acetylcholine is released and binds to motor end plate receptors 2. An action potential is created and moves down T-tubules 3. Calcium is released from the sarcoplasmic reticulum 4. Calcium ions bind to tropomyosin to shift troponin off the binding sites for cross-bridging 5. Myosin forms cross-bridges and binds with actin to pull it towards middle of sarcomerearrow_forward
- Through dedicated training, the speed or level of effort coinciding with a person’s lactate threshold improves. Within the skeletal muscle cell, what changes might have occurred to permit this improved lactate threshold, resulting in less lactate spilling out into the blood?arrow_forwardSlow-twitch muscle is the main muscle tissue used during endurance activities. Describe two features of slow-twitch muscle that make it well-adapted for endurance, and explain why each feature is important.arrow_forwardWhat is the optimum muscle activity to undertake for muscular hypertrophy? Explain deeply.arrow_forward
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