Zygomaticus major Orbicularis oris Masseter Platysma
192 Part B Assessments Complete the following statements: 1. When the _____________________ contracts, the corner of the mouth is drawn upward and laterally when laughing. 2. The _______________________ acts to compress the wall of the cheeks when air is blown out of the mouth. 2 2 3. The _______________________ causes the lips to close and pucker during kissing, whistling, and speaking. 2 4. The temporalis acts to ___________________________________________________. 5. The _______________________ pterygoid can close the jaw and can pull it sideways. 2 2 6. The _______________________ pterygoid can protrude the jaw, pull the jaw sideways, and open the mouth. 2 7. The _______________________ can close the eye, as in blinking. 2 8. The _______________________ can pull the head toward the chest. 2 9. The muscle used for pouting and to express horror is the _______________________. 2 10. The muscle used to widen the nostrils is the _______________________. Part C AssessmentsName the muscle indicated by the following combinations of origin and insertion. Make each selection from the list of muscles provided. 2 3 Origin Insertion Muscle 1. Manubrium of sternum Thyroid cartilage of larynx _______________________________ 2. Zygomatic arch Lateral surface of mandible _______________________________ 3. Pterygoid plate of sphenoid bone Anterior surface below mandibular condyle _______________________________ 4. Manubrium of sternum and medial clavicle Mastoid process of temporal bone _______________________________ 5. Lateral surfaces of mandible and maxilla Orbicularis oris _______________________________ 6. Fascia in upper chest Lower border of mandible and skin around corner of mouth _______________________________ 7. Temporal bone Coronoid process and anterior ramus of mandible _______________________________ 8. Spinous processes of cervical and thoracic vertebrae (C7–T6) Mastoid process of temporal bone and occipital bone _______________________________ 9. Styloid process of temporal bone Hyoid bone _______________________________ Muscles: Buccinator Lateral pterygoid Masseter Platysma Splenius capitis Sternocleidomastoid Sternothyroid Stylohyoid Temporalis zygomaticus major buccinator orbicularis oris raise the jaw/elevate mandible (as in biting) medial lateral orbicularis oculi sternocleidomastoid platysma nasalis Sternothyroid Masseter Lateral pterygoid Sternocleidomastoid Buccinator Platysma Temporalis Splenius capitis Stylohyoid
You've reached the end of your free preview.
Want to read all 8 pages?