B. procerus C. occipitofrontalis D. levator palpebrae superioris E. temporalis 8. Well developed mentalis muscles result in A. a dimple in the chin. B. crow's feet wrinkles. C. a wonderful smile. D. chubby cheeks. E. creases in the cheeks. 9. Closing or puckering the lips is the action of the ____ muscle. A. auricularis B. orbicularis oris C. orbicularis oculi D. levator anguli oris E. zygomaticus. 10. Which of the following muscles is involved in chewing gum? A. masseter B. splenius capitus C. orbicularis oris D. zygomaticus major E. orbicularis oculi 11. Muscles that elevate the jaw and close the mouth include the A. stylohyoid and procerus. B. temporalis and digastric. C. sternothyroid and buccinator. D. masseter and medial pterygoid. E. zygomaticus and buccinator. 12. The digastric muscle is involved in A. stomach contractions. B. opening the mouth. C. facial expression. D. tummy tucks. E. swallowing.
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QUESTIONS 4-8: Identify the muscle of facial expression that performs the action that is described. Choose your answers from the following list. Answers may be used once or not at all. a. frontalis b. orbicularis oculi c. buccinator d. platysma e. zygomaticus major f. depressor anguli oris g. orbicularis oris h. mentalis 4. When you smile, the ______ is the primary muscle that elevates the corners of your mouth. 5. Close one eye by blinking or squinting. This movement is initiated by the ______, a circular muscle that surrounds the eye. 6. When you frown, the ______ is the primary muscle that depresses the corners of your mouth. 7. As you grit your teeth, palpate the skin along the anterior surface of your neck. Notice that the skin is very tense. This response is caused by the contraction of the ______ 8. Compress your cheeks by whistling or blowing. This action is produced by the ______, which is the relatively large muscle of facial expression that can be palpated in your cheek wall.
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Muscles of the Head and Neck 3. Using choices from the key at the right, correctly identify muscles provided with leader lines on the illustration. Key: a. buccinator b. depressor anguli oris c. depressor labii inferioris d. frontal belly of the epicranius e. levator labii inferioris f. masseter g. mentalis h. occipital belly of the epicranius i. orbicularis oculi j. orbicularis oris k. risorius l. sternocleidomastoid m. zygomaticus minor and major 4. Using the key provided in question 3, identify the muscles described next. 1. used in smiling 2. used to suck in your cheeks 3. used in blinking and squinting 4. used to pout (pulls the corners of the mouth downward) 5. raises your eyebrows for a questioning expression 6. used to form the vertical frown crease on the forehead 7. your kissing muscle 8. prime mover of jaw closure 9. tenses skin of the neck during shaving
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