For each of the following muscles, describe the motion(s) producedwhen the muscle contracts. It may be helpful to use an articulatedskeleton.a. The biceps brachii muscle attaches to the coracoid process of thescapula (one head) and to the radial tuberosity of the radius. Nametwo movements that the muscle accomplishes in the forearm.b. The rectus femoris muscle attaches to the anterior inferior iliacspine and the tibial tuberosity. How does contraction move thethigh? The leg?c. The supraspinatus muscle is located in and attached to the supraspinatus fossa of the scapula. Its tendon runs over the head of thehumerus to the greater tubercle. When it contracts, what movement occurs at the glenohumeral (shoulder) joint?d. The gastrocnemius muscle attaches to the medial and lateralcondyles of the femur and to the calcaneus. What movement of theleg results when this muscle contracts? Of the foot?
For each of the following muscles, describe the motion(s) produced
when the muscle contracts. It may be helpful to use an articulated
skeleton.
a. The biceps brachii muscle attaches to the coracoid process of the
scapula (one head) and to the radial tuberosity of the radius. Name
two movements that the muscle accomplishes in the forearm.
b. The rectus femoris muscle attaches to the anterior inferior iliac
spine and the tibial tuberosity. How does contraction move the
thigh? The leg?
c. The supraspinatus muscle is located in and attached to the supraspinatus fossa of the scapula. Its tendon runs over the head of the
humerus to the greater tubercle. When it contracts, what movement occurs at the glenohumeral (shoulder) joint?
d. The gastrocnemius muscle attaches to the medial and lateral
condyles of the femur and to the calcaneus. What movement of the
leg results when this muscle contracts? Of the foot?
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