You are helping an individual retrieve a very heavy box off of a high shelf. You have to fully flex your shoulder in order to get this box and then you will extend the shoulder back to anatomical position to place the box safely where it needs to be.  1. What are all the muscles responsible for the first movement of flexion to get the box? 2. What are all the muscles responsible for the second movement of extension to safely place the box where it needs to be?

Muscles that Extend the Thigh at the Hip Origin Insertion Action Gluteus Maximus* (also laterally rotates thigh) Hamstring Muscles: Biceps Femoris* Hamstring Muscles: Semimembranosus* Hamstring Muscles: Semitendinosus* Gluteus medikus Gluteus maximus Adductor- magnus Graclis llotbial tract Biceps femoris Long head Short head Semitendinosus- Semimembranosus (a) Posterior muscle of the hip and thigh, superficial view

Why does the contraction of one head of biceps femoris flex the knee and extends the hip while the other head can only flex the knee?

When the weight is traveling upwards, what are the agonist(s) for the action occurring at the wrist joint? must watch video clip to answer https://www.youtube.com/watch?v=6pWu4Xko9qM a. Flexor carpi radialis, Extensor carpi radialis brevis, Extensor carpi radialis longus, Extensor pollicis longus, Abductor pollicis longus b. Extensor carpi ulnaris, extensor carpi radialis brevis, extensor carpi radialis longus c. Flexor carpi ulnaris, Extensor carpi ulnaris d. Flexor carpi radialis, Palmaris longus, Flexor carpi ulnaris

Which gluteal muscle is LEAST involved in abduction of the thigh? (That is, which one has the worst mechanical advantage for thigh abduction?) Gluteus Minimus Gluteus Maximus Gluteus Medius

Match the following axial muscles with the correct action: Zygomaticus [ Choose ] Flexes and rotates trunk, compresses abdominal viscera Elevates and protracts mandible Pulls the corners of the mouth posteriorly, as in smiling Masseter Elevates ribs Rectus Abdominus [ Choose ] External Intercostals [ Choose ]

The right levator scapula is contracted with the intent to only elevate the scapula, no other actions at the scapula are desired. Please complete the following two part question What are all of the muscles that could act as a synergist/neutralizer during this motion? What muscle would be the best option for a synergist/neutralizer and justify your answer?

While keeping your foot on the ground you are able to lift only your big toe due to the contraction of which of the following muscles? extensor digitorum extensor hallicus longus tibialis anterior fibularis longus

* These muscles (and subscapularis) form the rotator cuff which is a critical stabilizing element for the glenohumeral joint (shoulder joint). Thus, one action for each of these muscles is to stabilize the shoulder joint. Examine the rotator cuff muscles in the cadaver and see if you can determine where the tendons incompletely surround the head of the humerus. What clinical significance does this have?

During elbow flexion which muscles would NOT act to cause this action? Group of answer choices Biceps brachii All of these muscles would produce flexion at the elbow Flexor carpi radialis Brachialis