18 Questions
What muscle is responsible for elevating and closing the jaw?
Temporalis
What muscle raises the eyebrows and wrinkles the forehead?
Orbicularis Oculi
Which muscle depresses the lower lip?
Mentalis
Which muscle elevates the corner of the mouth and draws it laterally?
Zygomaticus major
When contracted, which muscle flattens and increases the vertical dimension of the thoracic cavity for inhalation?
Diaphragm
What muscle compresses and purses the lips?
Orbicularis Oris
What bone/marking does the diaphragm insert into?
Xiphoid process of sternum/costal cartilage
Which muscle elevates the upper lip?
Levator Labii Superioris
Which muscle is responsible for elevating the upper lip?
Zygomaticus minor
Which muscle flexes the neck bilaterally and laterally flexes it unilaterally?
Sternocleidomastoid
Which muscle is involved in elevating the mandible?
Masseter
Where does the Orbicularis Oris muscle insert?
Skin of lower lip
What is the main function of the Internal Intercostals when relaxed?
Increase dimension of the thoracic cavity for inhalation
Where does the Rectus Abdominis muscle insert?
Xiphoid process of sternum
What action do the External Oblique muscles perform when acting together?
Compress abdomen and flex vertebral column
Where does the Transverse Abdominis muscle originate from?
Iliac crest of ilium
What role do the Erector Spinae muscles play when contracting together?
Extend the vertebral column and maintain posture
How do the Internal Oblique muscles act when contracting separately?
Rotate column to same side/lateral flexion
Test your knowledge on the origins, insertions and actions of muscles in the head and neck. Practice identifying structures in SynDavers and muscle models. Includes muscles of the cranial, face, eye, and neck regions.
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