Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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describe how and why maintaining the position of full knee extension limits the ability to maximally flex the hip both actively and passively. Does maintaining excessive hip flexion limit the ability to accomplish full knee extension? Consequently, describe how and why maintaining the position of full knee flexion limits the ability to maximally extend the hip both actively and passively. Does maintaining excessive hip extension limit the ability to accomplish full knee flexion?
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- Match the muscles to the movements which are caused when the respective muscles contract concentrically. Cervical extension Cervical flexion - Cervical lateral flexion to the right Cervical lateral flexion to the left Cervical rotation to the right Cervical rotation to the left Lumbar extension Lumbar flexion Lumbar lateral flexion to the right Lumbar lateral flexion to the left Lumbar rotation to the right Lumbar rotation to the left - - A. Erector spinae, quadratus lumborum B. Erector spinae, splenius cervicis, splenius capitis C. L) erector spinae, L) rectus abdominis, R) external oblique L) internal oblique D. L) erector spinae, L) rectus abdominis, L) external oblique, L) internal oblique, L) quadratus lumborum E. R) erector spinae, R) rectus abdominis, L) external oblique R) internal oblique F. R) erector spinae, R) rectus abdominis, R) external oblique, R) internal oblique, R) quadratus lumborum G. Rectus abdominis, external oblique, internal oblique H. L) splenius cervicis, L)…arrow_forwarddescribe scapulohumeral movement, or synergy, that takes place with the shoulder joint and girdle. What muscles are acting to create these motions? What could happen if this synergy did not occur?arrow_forwardWhich movement at the ankle is controlled by the most muscles, plantar or dorsiflexion? List at least two functional movements that would be important to have adequate dorsiflexion.arrow_forward
- what movement does the hip joint make when starting the stance phase of a normal gait cycle?arrow_forwardDescribe each of the below muscle actions and list at least one muscle that creates the action.Lower Extremity Muscle Actions: · Knee flexion · Knee extension · Knee medial rotation · Knee lateral rotation · Dorsiflexion · Plantarflexion · Foot inversion · Foot eversion · Foot digits flexion · Foot digits extension· Hip flexion · Hip extension · Hip medial rotation · Hip lateral rotation · Hip abduction · Hip adductionarrow_forwardWhat type of lever is the vastus medialis? Support your answer with a free body diagram. The vasti muscles are used both for sit-to-stand AND stand-to-sit movements. Which of these two tasks represents a concentric contraction and which represents an eccentric contraction? Which muscle (vastus lateralis or medialis) do you think is more important for doing a slow, controlled stand-to-sit transition? If you witnessed your grandfather "plopping" (doing an uncontrolled sit) into a chair, would you recommend giving him eccentric or concentric strengthening exercises for his vasti muscles? Justify your answer.arrow_forward
- Which of the following is true regarding internal/external rotation of the knee? A. Can occur at any angle of knee flexion B. Greater range of motion in internal rotation C. During initial flexion from full extension, knee must unlock by externally rotating D. The popliteus is the muscle responsible for “unlocking” the kneearrow_forwardDescribe each of the below actions and name at least one muscle that creates that movement. Back/Thorax Muscle Actions: · Spine flexion · Spine extension · Spine lateral flexion · Spine rotation · Scapula elevation · Scapula depression · Scapula adduction · Scapula abduction · Scapula upward rotation · Scapula downward rotation· Ribs elevation · Ribs depressionarrow_forwardA patient is completing a knee extension exercise. The patellar tendon inserts on the tibia 2.92 cm away from the knee joint axis of rotation. The foot is 40.38 cm away from the knee joint axis of rotation. What is the foots arc length through the exercise if the patellar tendon insertion moves through an arc length of 7.80 cm? Report you answer in meters.arrow_forward
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