Item 26 Item 26 With increased age, skeletal muscles show Multiple Choice a decrease in the number of myofibrils. an increase in muscle fiber diameter. no change in oxygen storage capability. increased glycogen reserves. a tendency to fatigue less rapidly.

Q: Multiple Choice gap junctions that connect neurons to smooth muscle cells. varicosities of a…

A: Smooth muscles as the name imply, are smooth in appearance with no striations. These are also…

Q: Muscle tone is a result of _________ nervous system activity, and it acts to _________ joint…

A: In studies of movement, posture, and movement disorders, muscle tone is perhaps one of the most…

Q: Summation of contraction is also known as wave summation . Describe the role of calcium in wave…

A: The primary function of wave summation is to produce a smooth and continuous muscle contraction. It…

Q: As a result of a resistance training program from your exercise prescription, the client…

A: Any exercise that causes the muscular contractions against an external load with the goal of…

Q: Elite sprinters have a high concentration of muscle fibers with the fastest cross-bridge cycling and…

A: Different kinds of muscles are present in the body, which help in locomotion and movement. These…

Q: Correctly order the steps of excitation contraction coupling for a muscle fiber. 1. 2. 3. 4. 5. 6.…

A: The contraction of a skeletal muscle fiber causes the sarcomere to get shortened linearly. These…

Q: A weight lifter decides to go jogging with a friend. Explain why the weight lifter can’t keep…

A: During anaerobic glycolysis, glucose is decomposed into lactic acid and releases energy. In the…

Q: List five proteins of the myofilaments

A: We know that Muscles are the soft tissue found in our body. Muscles work to create strength and…

Q: Is muscle endurance alone a good predictor of a person’s physical fitness? Why  or Why not

A: Physical fitness is a well being and state of health and more specifially the ability to perform the…

Q: Select the correct statements regarding myosin-mediated contraction in the sarcomere. Ca2+ is…

A: Actin and myosin work together to produce muscle contractions and, therefore, movement.

Q: similar to peak bone mass: approximately 30 Similar to menopause: approximately 50 Into the 60's…

A: Muscle hypertrophy is the natural phenomenon of an increase in muscle mass. The decline in muscle…

Q: Type II (fast twitch) muscle fibers contain what properties?    Select 2 correct answer(s)…

A: Skeletal system are the major organ system of the human body that provides framework and structural…

Q: List five proteins of the myofilaments

A: Introduction Muscles are composed of muscle fibers that allow them to contract or relax. These…

Q: How would you design a strength training program at your current stage of life, age 57,  and more…

A: Before starting any strength training program, it's important to assess your current fitness level.…

Q: Smooth muscle cells lack transverse tubules. True or False True False

A: Muscles constitute a set of specialized tissues which play an important role in body movements along…

Q: During contraction, where does the calcium that binds to troponin come from

A: Muscles are made up of two main protein filaments namely, a thick filament that is made up of a…

Q: complete tetanus    Has increased muscle length with no change in tension.   eccentric…

A: The contraction of the muscle generates a force called as muscle tension. There is also generation…

Q: What are the different muscle fiber types

A: The muscle fibers are multi-nucleated (exclusively in the case of skeletal muscle fibers),…

Q: Question 47 (1 point) Which of the following options describes the speed at which force may be…

A: Type 1 muscles fibers are present for long duration of contractile activities.and found in the…

Q: John is a sprinter who specializes in quick and powerful bursts of speed followed by periods of…

A: Skeletal muscle fibres are voluntary muscle fibres. They are striated muscle fibre. They are…

Q: Myoglobin provides muscle fibers with a means of supplying ATP anaerobically. True or False

A: The globin is a globular protein that contains heme group and it plays a vital role in binding and…

Q: Match the statement on the left with the best response on the right. Breaking the high energy bond…

A: Introduction :  A synapse is a small space that represents the junction between two axon terminals…

Q: Diagram the molecular events of the contraction-relaxation cycle. Be sure to highlight the roles of…

A: The muscular system is an organ system comprising skeletal, smooth, and cardiac muscles. It grants…

Q: Richa lost two points on her anatomy exam because she couldn’t answer why one type of muscle fiber…

A: The reason why there is a difference in the color of muscle fiber is :Red muscle fiber: In red…

Q: Each of the pairs of phrases below describe steps during skeletal muscie contraction. The 2nd phrase…

A: Muscle tissue is a type of tissue which contain actin , Troponin and myosin proteins so as to allow…

Q: Ella was known to be great dancer when she was in her teenage years. As she aged her dancing stamina…

A: Skeletal muscles can be defined as a type of muscle that is present in the human body. These muscles…

Q: muscle atrophy? Multiple Choice Reduction in muscle size. Fibers become weaker. Muscle loses…

A: Muscles are the ultimate units of contraction. The contraction and relaxation of muscles lead to the…

Q: An INCREASE in has no direct effect on increasing tension during skeletal muscle contraction.…

A: The muscles which are attached to the bones, can contract voluntarily and are mainly involved in…

Q: Which of the following is NOT an expected change to lactate threshold after 6-months of aerobic…

A: "Lactate threshold is the point during exercise at which lactate (or lactic acid) begins to…

Q: True/False

A: Every living organisms try to maintain a constant homeostatic internal environmental conditions that…

Q: Embryonic myoblasts fuse to form single muscle fibers during development; thus skeletal muscle cells…

A: Embryonic stem cell is a pluripotent cell which has the ability to differentiate to all other cell…

Q: An explanation leading to the correct answer would be helpful! Scenario: Your friend Arnold S, who…

A: Weightlifting is a popular and effective form of resistance training that plays a pivotal role in…

Q: T-tubules are invaginations of the sarcolemma of a muscle cell. True or False True False

A: The skeletal muscle cell (myocyte) contains sarcoplasm surrounded by sarcolemma. It comprises…

Q: Skeletal muscle fibers regularly divide by mitosis. True False

A: Muscle tissues are are the types of tissue which have proficiency to extend  , relax , possess…

Q: arcoplasmIC hypertruphy a liml SIZE training? It adds more actin and myosin. It decreases glycogen…

A: Sarcoplasmic Hypertrophy  Cytoplasm of the muscle fiber or cell is referred as Sarcoplasm .…

Q: A man arrived into a traumatological department with a trauma of the right shoulder. Examination…

A: Option A: Radial nerve Fracture of humerus at midshaft is likely to cause injury to Radial nerve.…

Q: Which of the muscle fiber types have the lowest amount of capillaries, mitochondria, and myoglobin,…

A: Introduction : Types of skeletal muscle fibres, including slow vs fast twitch, are distinguished.…

Q: What effect does muscle health have to do with bone health

A: When the muscle is  activated, it pulls on the tendon. Tendons attach muscles to bones. The tendon…

Q: 5. Diagram the structure and organization of the actin and myosin filaments including the myosin…

A: Note-  As we are allowed to do only one question at a time so I will provide answer to one question…

Q: What contains troponin, is involuntary and intracellular calcium is necessary in muscle contraction?…

A: Calcium lets out from the sarcoplasmic reticulum through calcium particle channels when the membrane…

Q: Muscle fiber contraction and nerve impulse conduction are similar in that both are response.

A: We can say that Muscle fiber contraction takes place when a muscle fiber is signaled by the brain…

Q: Correctly order the steps of excitation contraction coupling for a muscle fiber. 1. 2. 3. 4. 5. 6.

A: The human body is a plethora of fascination. There are different organ systems that function in the…

Q: List five proteins of the myofilaments

A: We know that Muscles are the soft tissue found in our body. Muscles work to create strength and…