Muscular System (Chapter 10) Flashcards

1
Q

Frontalis Muscle

A

Raises eyebrows; O: epicranial aponeurosis, I: skin and muscles around eye; Facial nerve (Cranial VII)

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2
Q

Occipitalis Muscle

A

Pulls scalp posteriorly; O: occipital and temporal bones, I: epicranial aponeuroses; Facial nerve

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3
Q

Orbicularis Oculi Muscle

A

Closes eye, “winking”; O: maxillary and frontal bones, I: skin around eye; Facial nerve (Cranial VII)

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4
Q

Orbicularis Oris Muscle

A

Close and protrudes lips, “kissing’; O: muscles near mouth, I: skin around mouth; Facial nerve

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5
Q

Buccinator Muscle

A

Compresses cheeks inward; O: outer surfaces of maxilla and mandible, I: orbicularis oris; Facial nerve

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6
Q

Zygomaticus Muscle

A

Raises corner of mouth, “smiling”; O: zygomatic bone, I: skin and muscles around mouth; Facial nerve

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7
Q

Masseter Muscle

A

Closes jaw; O: zygomatic arch, I: mandible; Trigeminal nerve (Cranial V)

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8
Q

Temporalis Muscle

A

Closes jaw; O: temporal bone, I: mandibular coronoid process; Trigeminal nerve

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9
Q

Sternocleidomastoid Muscle

A

Flexes neck and rotates head; O: sternum and clavicle, I: mastoid process of temporal bone; Accessory nerve (Cranial XI) and branches of cervical spinal nerves (C2/C3)

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10
Q

Trapezius Muscle

A

Extends neck and adducts scapula; O: occipital bone and all cervical and thoracic vertebrae, I: spine of scapula and clavicle; Accessory nerve (Cranial nerve XI, C2/C3)

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11
Q

External Intercostal Muscle

A

Pulls ribs up and out; O: superior rib, I: inferior rib; Intercostal nerves

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12
Q

Internal Intercostal Muscle

A

Pulls ribs down and in; O: inferior rib, I: superior rib; Intercostal nerves

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13
Q

Diaphragm Muscle

A

Inspiration, flattens increasing vertical dimensions of thorax; O: inferior internal surface of rib cage and sternum, I: central tendon of diaphragm; Intercostal nerves

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14
Q

External Oblique Muscle

A

Tenses abdominal wall and lateral rotation; O: lower 8 ribs, I: iliac crest; Intercostal nerves (T7-T12)

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15
Q

Internal Oblique Muscle

A

Tenses abdominal wall and lateral rotation; O: iliac crest, I: lower 3 ribs; Intercostal nerves (T7-T12, L1)

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16
Q

Transversus Abdominis Muscle

A

Tenses abdominal wall; O: lower 6 ribs, I: crest of pubis; Intercostal nerves (T7-T12, L1)

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17
Q

Rectus Abdominis Muscle

A

Flexes vertebral column; O: crest of pubis, pubic symphysis, I: xiphoid process of sternum, 5th - 7th costal cartilages; Intercostal nerves (T6 or T7-T12)

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18
Q

Rhomboideus Major Muscle

A

Raises and adducts scapula; O: spines of upper thoracic vertebrae. I: medial border of scapula; Dorsal scapular nerve (C4/C5)

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19
Q

Infraspinatus Muscle

A

Rotates arm laterally; O: posterior surface of scapula, I: greater tubercle of humerus; Suprascapular nerve

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20
Q

Serratus Anterior Muscle

A

Pulls scapula downward and forward; O: upper 9 ribs, I: vertebral border of scapula; Long thoracic nerve (C5-C7)

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21
Q

Deltoid Muscle

A

Abducts arm; O: acromion process, spine of scapula, clavicle, I: deltoid tuberosity of humerus; Axillary nerve (C5/C6)

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22
Q

Pectoralis Major Muscle

A

Flexes and adducts arm; O: clavicle, sternum, 2nd to 6th costal cartilages, I: intertubular groove of humerus; Lateral/medial pectoral nerves (C5-C8/T1)

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23
Q

Latissimus Dorsi Muscle

A

Extends or adducts arm; O: iliac crest, I: intertubular groove of humerus; Thoracodorsal nerve (C6-C8)

24
Q

Biceps Brachii Muscle

A

Flexes forearm and supinates hand; O: scapula, I: radial tuberosity; Musculocutaneous nerve (C5/C6)

25
Q

Triceps Brachii Muscle

A

Extends forearm; O: scapula, proximal humerus, I: olecranon process of ulna; Radial nerve (C6-C8)

26
Q

Brachialis Muscle

A

Flexes forearm; O: anterior humerus, I: coronoid process of ulna; Musculocutaneous nerve

27
Q

Extensor Carpi Muscle

A

Extends and abducts wrist and hand; O: humerus, I: carpals and metacarpals; Median nerve

28
Q

Flexor Carpi Muscle

A

Flexes and adducts wrist and hand; O: humerus, I: carpals and metacarpals; Radial nerve

29
Q

Extensor Digitorum Muscle

A

Extends and abducts fingers; O: humerus, radius, and ulna, I: phalanges; Posterior interosseus nerve, branch of radial nerve (C7/C8)

30
Q

Flexor Digitorum Muscle

A

Flexes and adducts fingers; O: humerus, radius, ulna, I: phalanges; Median nerve

31
Q

Iliopsoas Muscle

A

Flexes thigh; O: lumbar vertebrae, ilium, I: lesser trochanter of femur; Femoral nerve (L2/L3)

32
Q

Gluteus Maximus Muscle

A

Extends thigh; O: posterior ilium, sacrum, I: proximal femur; Inferior gluteal nerve (L5, S1/S2)

33
Q

Gluteus Medius Muscle

A

Abducts thigh; O: ilium, I: greater trochanter of femur; Superior gluteal nerve (L4/L5, S1)

34
Q

Adductor Group (Pectineus, adductor longus, adductor magnus, gracilis)

A

Adducts thigh; O: pubis and ischium, I: femur and tibia; Obturator nerve (L2-L4)

35
Q

Tensor Fascia Latae Muscle

A

Flexes, abducts, rotates thigh; O: ilium, I: iliotibial tract; Superior gluteal nerve (L4/L5)

36
Q

Quadriceps Femoris Group (Rectus femoris, Vastus lateralis, Vastus medialis, Vastus intermedius)

A

Extends lower leg; O: ilium and femur, I: patella tendon that continues as ligament to tibial tuberosity; Femoral nerve (L2-L4)

37
Q

Hamstring Group (Biceps femoris, Semimembranosis, Semitendinosus)

A

Flexes lower leg and extends hip; O: ischial tuberosity, I: lateral and medial tibia; Sciatic-tibial nerve (L5-S2)

38
Q

Sartorius Muscle

A

Flexes, abducts, and rotates leg; O: ilium, I: medial tibia; Femoral nerve

39
Q

Gastrocnemius Muscle

A

Plantar flexion and eversion of foot; O: condyles of femur, I: calcaneus by way of Achilles tendon; Tibial nerve (S1/S2)

40
Q

Tibialis Anterior Muscle

A

Dorsiflexion and inversion of foot; O: condyles of tibia, I: tarsal and metatarsal bones; Deep fibular nerve (L4/L5)

41
Q

Soleus Muscle

A

Plantar flexion of foot; O: tibia and fibula, I: calcaneus; Tibial nerve

42
Q

Fibularis Longus Muscle

A

Plantar flexion and eversion of foot; O: fibula, I: tarsal and metatarsal bones; Superficial fibular nerve (L5-S2)

43
Q

Flexor Digitorum Longus Muscle

A

Plantar flexion, inversion of foot, and flexion of toes; O: tibia and fibula, I: phalanges; Tibial nerve (L5-S2)

44
Q

Extensor Digitorum Longus Muscle

A

Dorsiflexion and extension of toes; O: tibia and fibula, I: phalanges; Tibial nerve (L5-S2)

45
Q

Bell’s palsy (facial paralysis)

A
46
Q

Inguinal Hernia

A
47
Q

Urinary stress incontinence

A
48
Q

Impingement syndrome

A
49
Q

Compartment syndrome

A
50
Q

Calcaneal tendon rupture (Achilles tendon tear)

A
51
Q

Back injuries

A
52
Q

Groin pull

A
53
Q

Hamstring strains/pulls

A
54
Q

Shin splint syndrome

A
55
Q

Plantar fasciitis

A
56
Q

Torticollis

A