Anatomy & Physiology
5th Edition
ISBN: 9780321861580
Author: Marieb, Elaine N.
Publisher: Pearson College Div
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Textbook Question
Chapter 10, Problem 5CYU
What benefit is provided by a lever that operates at a mechanical advantage?
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Chapter 10 Solutions
Anatomy & Physiology
Ch. 10 - The term prime mover is used in the business world...Ch. 10 - What criteria are used in naming each of the...Ch. 10 - Prob. 3CYUCh. 10 - Which of the three lever systems involved in...Ch. 10 - What benefit is provided by a lever that operates...Ch. 10 -
6. As John listened to Roger’s account of how he...Ch. 10 - What muscles would you contract to make a sad...Ch. 10 - How can the deltoid muscles both extend and flex...Ch. 10 - Which of the thenar muscles does not have an...Ch. 10 - A muscle that assists an agonist by causing a like...
Ch. 10 - The arrangement of muscle fibers in which the...Ch. 10 - Match the muscle names in column B to the facial...Ch. 10 - The prime mover of inspiration is the (a)...Ch. 10 - The arm muscle that both flexes the elbow and...Ch. 10 - The chewing muscles that protract the mandible and...Ch. 10 - Muscles that depress the hyoid bone and larynx...Ch. 10 - Intrinsic muscles of the back that promote...Ch. 10 - Several muscles act to move and/or stabilize the...Ch. 10 - The quadriceps include all but (a)...Ch. 10 - A prime mover of hip flexion is the (a) rectus...Ch. 10 - The prime mover of hip extension against...Ch. 10 - Muscles that cause plantar flexion include all but...Ch. 10 - In walking, which two lower limb muscles keep the...Ch. 10 - Prob. 15RQCh. 10 - Which of the following is large, deep muscle that...Ch. 10 - Name four criteria used in naming muscles, and...Ch. 10 - Differentiate between the arrangement of elements...Ch. 10 - What does it mean when we say that a lever...Ch. 10 - Which muscles act to propel food down the length...Ch. 10 - Name and describe the action of muscles used to...Ch. 10 - (a) Name the four muscle pairs that act in unison...Ch. 10 - List all six possible movements that can occur at...Ch. 10 - (a) Name two forearm muscles that are powerful...Ch. 10 - Name the muscles usually grouped together as the...Ch. 10 - Name three thigh muscles that help you keep your...Ch. 10 - (a) Name three muscles or muscle groups used as...Ch. 10 - Name two muscles in each of the following...Ch. 10 -
In Chapters 7 and 8, you were introduced to Kayla...Ch. 10 - In Chapters 7 and 8, you were introduced to Kayla...Ch. 10 - Prob. 3CCSCh. 10 - Prob. 4CCS
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- What is an example of multiple lever types in the body during the same movement?arrow_forwardWhat class of lever is described by the following activities: (1) the soleus plantar flexing the foot; (2) the deltoid abducting the arm; (3) the triceps brachii extending the forearm during push-ups?arrow_forwardDifferentiate between the arrangement of elements (load, fulcrum, and effort) in first-, second-, and third-class levers.arrow_forward
- Give an anatomical example of each class of levers andexplain why each example belongs in that classarrow_forwardA muscle that helps an agonist by causing a similar movement or by stabilizing a joint over which the agonist acts is (a) an antagonist, (b) a prime mover, (c) a synergist, (d) a fulcrum.arrow_forwardIf your biceps brachii muscle attaches to your forearm 2 inches below your elbow, the distance from the elbow to the palm of your hand is 18 inches, and you lift a 20 pound weight, how much pull must your muscle exert to achieve elbow flexion? If your biceps brachii muscle attaches to your forearm 2 inches below your elbow, the distance from the elbow to the palm of your hand is 18 inches, and you lift a 20 pound weight, how much pull must your muscle exert to achieve elbow flexion? hhharrow_forward
- Which of the three lever systems involved in muscle mechanics would be the fastest lever—first-, second-, or third-class?arrow_forwardWe move a lot and do not even realize how intricate these movements may be from gross motor to fine motor manipulations. Briefly explain the steps involved in a single muscle contraction beginning at the neuromuscular junction through one complete contraction and relaxation for the sliding filament theory. Don’t forget to include all the major proteins (actin, myosin, troponin and tropomyosin) involved as well as calcium and ATP.arrow_forwardDiscuss the functions of the different types of levers found in our body. How do these different types of levers make our body more useful. Explain each type of lever, the position of the fulcrum, load, and applied force and give an example of each.arrow_forward
- Using the terms fulcrum, lever, and force, explain howcontraction of a muscle results in movement.arrow_forwardIsometric exercise is best described as applying a force O a) with movement through a full and complete range of motion O b) while a muscle is lengthening and returning to a resting position c) without any change in length of the muscle O d) at a constant speedarrow_forwardWhich of the following statements is (are) true about lever systems?a. The effort is the origin of the muscle.b. The fulcrum is a joint.c. The resistance is between the effort and the fulcrum in a third-class lever.d. First-class levers are the most common in the human body.e. The quadriceps muscles use a third-class lever to extend the knee.arrow_forward
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