quiz 1 ujit 3 neck and trunk muscles action insertion origin

Flashcards covering the origins, insertions, and actions of various tongue, neck, trunk, and back muscles.

Genioglossus Origin

Medial surface of mandible.

Genioglossus Insertion

Tongue.

Genioglossus Action

Protracts tongue (sticks out tongue).

Sternocleidomastoid Origin

Sternum and clavicle.

Sternocleidomastoid Insertion

Mastoid process of temporal bone.

Sternocleidomastoid Action

Flexion, lateral flexion, and rotation of neck.

Scalenes (anterior, middle, posterior) Origin

Transverse process of cervical vertebrae.

Scalenes (anterior, middle, posterior) Insertion

1st or 2nd rib.

Scalenes (anterior, middle, posterior) Action

Elevate ribs and/or flex neck.

Rectus Abdominis Origin

Pubic bone (pubis).

Rectus Abdominis Insertion

Xiphoid process and ribs.

Rectus Abdominis Action

Flexion of torso.

External Abdominal Obliques Origin

Lower ribs.

External Abdominal Obliques Insertion

External abdominal oblique aponeurosis, iliac crest.

External Abdominal Obliques Action

Flexion and lateral flexion of torso.

Internal Abdominal Obliques Origin

Iliac crest.

Internal Abdominal Obliques Insertion

Lower ribs.

Internal Abdominal Obliques Action

Rotation of torso.