More than one statement MAY be correct - The plastic region of a stress-strain curve of a ligament indicates an area where: A. the magnitude of applied stress leads to a failure of the stretched tissue B. the stretched tissue recoils to its resting length once the stressor force is removed C. indicates the yield point D. the magnitude of applied stress induces plastic changes in the stretched tissue

More than one statement MAY be correct - The plastic region of a stress-strain curve of a ligament indicates an area where: A. the magnitude of applied stress leads to a failure of the stretched tissue B. the stretched tissue recoils to its resting length once the stressor force is removed C. indicates the yield point D. the magnitude of applied stress induces plastic changes in the stretched tissue

Medical Terminology for Health Professions, Spiral bound Version (MindTap Course List)

8th Edition

ISBN:9781305634350

Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. Schroeder

Publisher:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. Schroeder

Chapter4: The Muscular System

Section: Chapter Questions

Problem 23LE: A band of fibers that holds structures together abnormally is a/an______________. These bands can...

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The plastic region of a stress-strain curve of a ligament indicates an area where: A. the magnitude of applied stress leads to a failure of the stretched tissue B. the stretched tissue recoils to its resting length once the stressor force is removed C. indicates the yield point D. the magnitude of applied stress induces plastic changes in the stretched tissue
Which of the following are true regarding length/tension relationships in muscle? O In the sarcomere, the maximal tension occurs at normal resting length O In the whole muscle, maximal passive tension occurs at ½ normal length In the whole muscle, maximal active tension occurs at normal resting length All of the above O Only A and C
A band of fibers that holds structures together abnormally is a/an______________. These bands can form as the result of an injury or surgery. adhesion aponeurosis atrophy contracture
One of the primary characteristics of all muscle tissue is contractility, the ability to shorten (contract) and lengthen (relax). You've identified the various components of a myofibril above. Now, use the table below to indicate what occurs to each band, line, or zone when the muscle contracts vs. relaxes. What occurs to this region / structure during contraction/relaxation? Region / Structure A-Band H-Band I-Band M-Line Z-Line Zone of Overlap Sarcomere No change Shortens Lengthens Muscle Contraction Muscle Relaxation
Considering the Length-Tension Relationship of skeletal muscle fibers, over stretching a muscle fiber or not stretching a muscle fiber enough, results ina decrease in force developed (during contraction) because: 27. A. An "over-stretched" muscle fiber or an “under-stretched" muscle fiber will not allow Calcium, from the sarcoplasmic reticulum, to adequately diffuse into the cytoplasm. B. An "over-stretched" muscle fiber or an "under-stretched" muscle fiber will not allow an optimum amount of contact and overlap for the contractile proteins. C. An "over-stretched" muscle fiber or an“under-stretched" muscle fiber will not allow the Action Potential to reach the troponin-activation channels. D. An "over-stretched" muscle fiber or an "under-stretched" muscle fiber will not allow the Sodium current to depolarize the membrane. Teurons to
What is the importance of porosity in tissue engineering scaffolds? Describe 2 different methods for the production of porous scaffolds.
The benefit of __ fascicle architecture is the ability to pack more fibers into a given area and produce a stronger contraction force: Select one: a. fusiformb. parallel c. pennated. circular
Why is the latent period longer during an isotonic twitch of a skeletalmuscle fiber than it is during an isometric twitch?a. Excitation–contraction coupling is slower during an isotonic twitch.b. Action potentials propagate more slowly when the fiber is shortening,so extra time is required to activate the entire fiber.c. In addition to the time for excitation-contraction coupling, it takesextra time for enough cross-bridges to attach to make the tension in themuscle fiber greater than the load.d. Fatigue sets in much more quickly during isotonic contractions, andwhen muscles are fatigued the cross-bridges move much more slowly.e. The latent period is longer because isotonic twitches only occur in slow(type I) muscle fibers.
Imagine that you are designing a scaffold for cartilage tissue engineering? Describe the requirements of engineered scaffolds for cartilage tissue engineering application. How would you manufacture that desired scaffold? Briefly explain manufacturing method.
A fasicle is bound and defined by the A. Endomysium B. Fascia C. Myofilaments D. Epimysium E. Perimyisum
Which of the following is true of cardiac muscle? о а. Cardiac cells are electrically connected via intercalated disks o b. All of these statements are true It is the only type of tissue that produces spontaneous action potentials o d. It is made of multinucleate cells It lacks sarcoplasmic reticulum Ос. Ое.
Match the relaxation and contraction action of the skeletal muscle with the events mentioned. D D D D Calcium moves out of the sarcoplasm, back into the sarcoplasmic reticulum The membrane of the muscle fiber repolarizes. The membrane of the muscle fiber depolarize. Motor neuron stops releasing its chemical signal Calcium from the sarcoplasmic reticulum into the sarcoplasm. ions are released Action potential arrives at the neuromuscular junction and synaptic vesicles release acetylcholine (ACh) 1. Relaxation 2. Contraction