29. Which function is being fulfilled by a muscle that does not contribute to th

Question

29. Which function is being fulfilled by a muscle that does not contribute to the force of a movement but holds a bone steady? a. Antagonist b. Synergist c. Supinator d. Fixator 30. Which muscle of facial expression is involved in "sneering" or raising the upper lip a. Zygomaticus major b. Risorius c. Levator labii superioris d. Platysma Which eye muscle passes through the trochlea and turns the eve inferiorly and laterally? a. Superior rectus 31. c. Inferior oblique d. Superior oblique b. Inferior rectus 32. The thick, bandlike muscle of mastication that covers much of the ramus of the mandi the ble is a. masseter b. temporalis. c. lateral pterygoid. d. risorius. 33. Which of the following muscles depresses the mandible (as in opening the jaws)? a. Masseter b. Platysma. c. Digastric. d. Zygomaticus major. 34. Which is a muscle that elevates and retracts the tongue? a. Buccinator b. Stylohyoid c. Hyoglossus d. Styloglossus 35. Which of the erector spinae muscles are most lateral to the vertebral column? a. Spinalis b. Longissimus c. Illiocostalis d. Semispinalis 36. Which muscles raise and spread the ribs? a. External intercostals c. External obliques d. Internal obliques b. Internal intercostals 37. With which muscle is the linea alba most closely associated? a. Epicranius b. Hamstring group. c. Rectus abdominis. d. Rectus femoris. 38. Which muscle fits this description: a thick, tapering muscle running from the back of the scapula to the proximal anterior portion of the humerus? a. Serratus anterior. b. Brachialis. c. Latissimus dorsi. d. Teres major.

Explanation / Answer

30. Levator labii superiors elevates the upper lip and sneering expression.

31. The superior oblique muscle or obliqus oculi muscle passea through the trochlea and turns eye inferiorly and laterally.

32. Lateral pterygoid muscle covers the ramus of mandible

33. Massetor muscle helps in opening the jaw

34. Styloglossus muscle elevate and retract the tongue

35. Illiocostal group of erector apinae muscle is most lateral to vertebral column

36. External intercoastal muscle raise and spread or expand the ribs.

37. Rectus abdominis muscle the linea alba is closely associated

38. Serratus anteror is thick amd tapering muscle running behind the scapula to the anterior portion of humerus

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