biod 151 exam 5

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biod 151 exam 5 Study online at https://quizlet.com/_eam6qm 1. there are ___ types of muscle tissue found in the body 3 2. types of muscle un- der voluntary control skeletal 3. T/F--the lumbar plexus is part of the central nervous sys- tem false. it is a peripheral nerve 4. T/F--a motor signal is a signal that is sent from a muscle to the CNS false. this is sensory input 5. T/F--the cervical plexus contains nerves that innervate the thigh false. it innervates neck and trunk. the lumbar plexus innervates the thigh 6. ligaments connect which types of tissue bone to bone 7. acetylcholine is what type of substance neurotransmitter 8. during a muscle con- traction which protein myofilament is pulled alone actin 9. what is the name of the thin myofilament actin 10. what must occur for a muscle contraction to stop calcium ions must be pumped back into the sar- coplasmic reticulum 1 / 8
biod 151 exam 5 Study online at https://quizlet.com/_eam6qm 11. flexor digitorum su- perficialis action, in- nervation action--flexion of wrist and digits 2-5 (middle & proxi- mal phalanx) innervation--median nerve 12. pronator teres origin, insertion, action, in- nervation origin--medial epicondyle of humerus insertion--mid-lateral surface of radius action--pronation innervation--median nerve 13. vastus medialis ori- gin, insertion, action, innervation origin--intertrochanteric line of femur insertion--patella via quadriceps tendon; tibial tuberosity action--knee extension innervation--femoral nerve 14. peroneus brevis ori- gin, insertion, action, innervation origin--lateral, distal fibula insertion--lateral side of 5th metatarsal action--plantarflex and evert/pronate foot innervation--superficial peroneal nerve 15. your patient sus- tained an injury to their facial nerve (CN VII). which actions would be impaired compress cheeks (buccinator), grin/grimace (riso- rius), eye closure (orbicularis oculi), mouth closure (orbicularis oris), pull corner of lips up (zygomatic major/minor), raise eyebrows (frontalis 16. your patient is having difficulty when asked to bring his chin to his chest. he is also sternocleidomastoid 2 / 8
biod 151 exam 5 Study online at https://quizlet.com/_eam6qm having difficulty tur- ing his face from side to side. what muscle is likely impaired 17. your patient is having difficulty when asked to bend his spine backward. what mus- cle is involve spinalis thoracis 18. T/F--when a muscle contracts, the Z lines within a sarcomere come closer together towards the M line true 19. T/F--the A band con- tains thin filaments true. A band has both thin and thick filaments 20. what muscle con- tracts to enable the main effort required to stand on your toes gastrocnemius 21. when gluteus max- imus contracts, which bone is pulled posteriorly by this muscle femur 22. when extensor digito- rum contracts, what actions occur wrist extension, extension of digits 2-5 23. contraction of ___ re- sults in ___. a. obturator externus, spine flexion c. iliacus, hip flexion 3 / 8
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biod 151 exam 5 Study online at https://quizlet.com/_eam6qm b. obturator externus, spine extension c. iliacus, hip flexion d. iliacus, hip exten- sion 24. when piriformis con- tracts, what actions will NOT occur at the hip a. internal rotation b. lateral rotation c. adduction d. flexion e. extension a. internal rotation d. flexion 25. which muscle is the prime mover of ad- duction, flexion, and inward rotation of the humerus pectoralis major 26. which muscle is in- nervated by the mus- culocutaneous nerve coracobrachialis 27. innervation of supraspinatus suprascapular nerve 28. origin of teres minor inferior angle of scapula 29. 4 / 8
biod 151 exam 5 Study online at https://quizlet.com/_eam6qm describe how acetyl- choline, sodium ions, and calcium ions work together to en- able a muscle con- traction acetylcholine is released from a motor nerve at the neuromuscular junction. acetylcholine binds to recep- tors on the muscle fiber that cause sodium channels to open. sodium ions rush inside cell and trigger ac- tion potential which reaches sarcoplasmic reticulum. calcium ions are released from sarcoplasmic reticu- lum of muscle cell, causing muscle contraction 30. tendons connect which types of tissue muscle to bone 31. the axillary nerve in- nervates which mus- cles deltoid, teres minor 32. innervation of orbicu- laris oculi facial nerve (CN VII) 33. origin of semispinalis capitis articular processes of inferior cervical vertebrae and transverse process of superior thoracic vertebrae 34. action of internal oblique compress abdomen, depress ribs, flex spine 35. innervation of inter- nal oblique lower intercostal, ilioinguinal nerves 36. innervation of serra- tus anterior long thoracic nerve 37. origin of lateral head of triceps superior lateral margin on humerus 38. insertion of lateral head of triceps olecranon of ulna 39. T/F--the I bands con- tain thick filaments false. I bands contain thin filaments 40. 5 / 8
biod 151 exam 5 Study online at https://quizlet.com/_eam6qm when superior gemel- lus contracts, what actions will NOT oc- cur at the hip a. lateral rotation b. internal rotation c. adduction d. extension e. flexion b. internal rotation e. flexion 41. action of flexor carpi radialis wrist flexion, radial deviation of hand 42. innervation of exten- sor carpi radialis bre- vis radial nerve 43. action of psoas major hip flexion (or trunk flexion if stationary) 44. innervation of adduc- tor longus obturator nerve 45. origin of gluteus min- imis gluteal surface of ilium 46. origin of vastus medi- alis intertrochanteric line of femur 47. action of flexor hallu- cis longus flexion of digit 1; inversion and planterflexion of foot 48. origin of biceps femoris long head--ischial tuberosity short head--linea aspera of femur and lateral surface of femur 6 / 8
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biod 151 exam 5 Study online at https://quizlet.com/_eam6qm 49. describe what is meant by muscle fiber "cross-bridges". what occurs to en- able movement of the cross-bridges in the presence of calcium ions, portions of a myosin filament called cross-bridges bend back and attach to an actin filament, after attaching, the cross-bridges bend forward and actin filament is pulled along. the cross-bridges attach and detach 50-100x as the thin filaments are pulled to center of sarcomere. ATP is needed on a cellular level for myosin to pull actin along 50. T/F--the musculocu- taneous nerve is part of the CNS false. this is a peripheral nerve 51. what is the name of the thick myofilament myosin 52. psoas major origin = transverse bodies of all lumbar vertebrae insertion = lesser trochanter of femur action = hip flexion or trunk flexion innervation = lumbar plexus 53. obturator externus action = lateral rotation of thigh innervation = obturator nerve 54. semimembranosus origin = ischial tuberosity insertion = medial condyle of tibia action = knee flexion innervation = tibial nerve 55. flexor hallucis longus origin = posterior fibula insertion = inferior surface of distal phalanx of digit 1 7 / 8
biod 151 exam 5 Study online at https://quizlet.com/_eam6qm action = flexion of digit 1; inversion and plantarflexion of foot innervation = tibial nerve (deep peroneal branch) 56. a person sustained a back injury to the muscle group clos- est to the spine. what muscle group was in- jured spinalis 8 / 8

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