Across
- 3. connective tissue layer surrounding each muscle fiber
- 4. largest muscle of the buttocks; extends the thigh
- 7. a muscle does not contract enough to produce motion; stabilizes a body part
- 12. located along the front of the femur; flexes the thigh
- 14. diagonal muscle on each side of the neck, ranging from sternum and clavicle to the mastoid process of the temporal bone
- 15. major chest muscle; adducts the upper arm with some medial rotation
- 17. heel is lifted and the body is supported on the toes
- 18. the addition of simple twitches from repeated stimulation of a muscle
- 19. quick jerky contraction to a single stimulus
- 20. fiber long, threadlike cells that compose skeletal tissue
- 24. circular muscle around the anterior margin of the orbit; closes the eye
- 27. moving a limb away form the midline of the body
- 33. palm is turned to an anterior position
- 34. palm is turned posteriorly
- 35. major muscle of the posterior upper arm; extends the forearm
- 37. organelles that establish the contractile ability of muscle cells
- 40. thicker central protein
- 41. moving a limb toward the midline of the body
- 42. circular muscle around the anterior margin of the mouth; contracts to pucker the lips
- 46. contract to support the action of the prime mover
Down
- 1. numerous chemical reactions in muscle cells liberate heat
- 2. bending, decreasing the angle at a joint
- 5. motor units in a muscle that are usually active when a muscle is not contracting enough to produce movement
- 6. along the front of the tibia; produces dorsiflexion
- 8. large, diamond shaped muscle of the upper back; it extends the head and works to shrug shoulders
- 9. inserting on the posterior region on the mandible; contributes to chewing
- 10. located on each side of the rectus abdomens; each one bends the trunk to that side of the body
- 11. each myofibril is a linear succession of boxlike units
- 13. the lateral and medial hamstring muscles respectively; they flex the calf
- 16. toes are lifted as the body is supported on the heel
- 17. continuation of this outer fascia, dividing the interior of the muscle into a bundle of cells
- 21. major muscle of the anterior upper arm; flexes the forearm
- 22. in the cheek; contracts to compress the cheeks
- 23. the bulging posterior calf muscle; produces plantar flexion
- 25. skeletal muscles attach to the bones; muscle contracts it pulls on a bone to produce movement
- 26. bulging muscle that covers each shoulder; abducts the upper arm
- 28. wide muscle of the lower back; it extends and adducts the upper arm
- 29. midline, segmented muscle of the abdominal wall; flexes the trunk
- 30. skeletal muscles pull on the vertebral column and other parts of the skeleton, helping to maintain an upright stance
- 31. pivoting a structure
- 32. fan-shaped muscle covering the temporal bone
- 36. connective tissue layer that envelopes the entire skeletal muscle
- 38. straightening out, increasing the angle at a joint
- 39. the muscle cannot respond when stimulated, as it is exhausted of nutrients and accumulates waste products; lacks glucose
- 43. thinner protein at each end of the sarcomere
- 44. long ribbonlike muscle ranging over the front of the thigh
- 45. toes are pointed medially
- 47. toes are pointed laterally
- 48. the powerful, sustained contraction of a muscle form the summation of simple twitches