Origin: lateral condyle Insertion: tibial shaft Action: medial rotation of tibia and flexion of knee

Identify the muscle marked #12.

Origin: sternal end of clavicle, manubrium Insertion: mastoid of skull Action: flexes neck, bends head to shoulder

Identify the muscle marked #9.

Origin: lateral epicondyle of humerus, radial notch of ulna Insertion: radial tuberosity Action: supination

Origin: lateral condyle, proximal tibia Insertion: 1st metatarsal bone, medial cuneiform Action: flexion at ankle, inversion and dorsiflexion

Origin: subscapular fossa of the scapula Insertion: lesser tubercle of the humerus Action: medial rotation at shoulder

Origin: coracoid process, supraglenoid tubercle Insertion: tuberosity of radius Action: flexion of elbow

Which of the following substances helps sperm to stick to the uterine walls?

                                   describes the process of sperm formation and growth.