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Anatomy & Physiology I > The Muscular System - Head, Neck, Trunk > Flashcards

The Muscular System - Head, Neck, Trunk Flashcards

1
Q

orbicularis oculi action

A

eye closure

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2
Q

orbicularis oculi innervation

A

facial nerve (CNVII)

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3
Q

orbicularis oris action

A

mouth closure, closes lips, protrudes lip forward, presses lips against teeth

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4
Q

orbicularis oris innervation

A

facial nerve (CNVII)

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5
Q

zygomaticus major/minor action

A

pull corners of lips upward

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6
Q

Zygomaticus major/minor innervation

A

facial nerve (CNVII)

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7
Q

risorius action

A

pulls corners of the mouth posteriorly (grin or grimace)

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8
Q

risorius innervation

A

facial nerve (CNVII)

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9
Q

frontalis (occipitofrontalis) action

A

raises eyebrows

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10
Q

Frontalis (occipitofrontalis) innervation

A

facial nerve (CNVII)

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11
Q

buccinator action

A

compress cheeks

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12
Q

buccinator innervation

A

facial nerve (CNVII)

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13
Q

masseter action

A

jaw closure

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14
Q

masseter innervation

A

trigeminal nerve (CN V, mandibular branch)

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15
Q

temporalis action

A

elevates mandible, closes jaw

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16
Q

temporalis innervation

A

trigeminal nerve (CN V, mandibular branch)

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17
Q

Semispinalis Capitis origin

A

articular processes of inferior cervical & transverse process of superior thoracic vertebrae

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18
Q

Semispinalis Capitis insertion

A

occipital bone

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19
Q

Semispinalis Capitis action (uni and bi)

A

bilateral - extends head, unilateral - laterally flexes neck to same side

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20
Q

Semispinalis Capitis innervation

A

spinal nerves

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21
Q

Sternocleidomastoid origin

A

sternal end of clavicle and manubrium

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22
Q

Sternocleidomastoid insertion

A

mastoid region of skull

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23
Q

Sternocleidomastoid action (uni and bi)

A

bilateral - neck flexion, unilateral - turns face to opposite side

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24
Q

Sternocleidomastoid innervation

A

accessory nerve (CN XI)

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25
Splenius Capitis origin
spinous process/ligaments of inferior cervical vertebrae
26
Splenius Capitis insertion
mastoid process, occipital bone of skull
27
Splenius Capitis action (uni and bi)
bilateral - extends head, unilateral - laterally flexes neck to same side
28
Splenius Capitis innervation
cervical spinal nerves
29
Longissimus Cervicis origin
transverse processes of superior thoracic vertebrae
30
Longissimus Cervicis insertion
transverse process of middle and superior cervical vertebrae
31
Longissimus Cervicis action (uni and bi)
bilateral - extends head, unilateral - laterally flexes neck to same side
32
Longissimus Cervicis innervation
cervical and thoracic spinal nerves
33
Longissimus Thoracis origin
transverse process of all thoracic and lumbar vertebrae
34
Longissimus Thoracis insertion
transverse processes of all thoracic vertebrae
35
Longissimus Thoracis action (uni and bi)
bilateral - extension of spine, unilateral - lateral flexion of spine
36
Longissimus Thoracis innervation
thoracic and lumbar spinal nerves
37
Thyrohyoid origin
thyroid cartilage of larynx
38
thyrohyoid insertion
hyoid bone
39
Thyrohyoid action
elevates thyroid, depresses hyoid bone
40
Thyrohyoid innervation
hypoglossal nerve
41
Scalenes (anterior, middle, posterior) origin
transverse processes of C2- C7
42
Scalenes (anterior, middle, posterior) insertion
first and second ribs
43
Scalenes (anterior, middle, posterior) action
elevates ribs 1 & 2
44
Scalenes (anterior, middle, posterior) innervation
cervical spinal nerves
45
what are the 3 muscles of the erector spinae?
spinalis, longissimus, iliocostalis
46
what are the 3 portions of the spinalis?
spinalis thoracis, spinalis cervicis, and spinalis capitis
47
what are the 3 portions of the longissimus?
longissimus thoracis, longissimus cervicis, and longissimus capitis
48
what are the 3 portions of the iliocostalis?
iliocostalis lumborum, iliocostalis thoracis, and iliocostalis cervicis
49
Rectus abdominis origin
pubic crest, pubic symphysis
50
Rectus abdominis insertion
pubis, cartilages of ribs 5-7, xiphoid process
51
Rectus abdominis action
flexion of spine, compression of abdominal viscera
52
Rectus abdominis innervation
spinal nerves (T7-T12)
53
External Oblique origin
sternum, ribs (5-12)
54
External Oblique insertion
linea alba, iliac crest
55
External Oblique action (uni and bi)
bilateral - flexion of the spine, compress the abdomen, unilateral - flexes trunk to same side, rotates to opposite side
56
External Oblique innervation
lower intercostal, ilioinguinal nerves
57
Internal Oblique origin
iliac crest, lumbodorsal fascia
58
Internal Oblique insertion
inferior ribs, linea alba
59
Internal Oblique action
compresses abdomen, depresses ribs, flexes spine
60
Internal Oblique innervation
lower intercostal, ilioinguinal nerves
61
Transverse Abdonimis origin
lateral inguinal ligament, inner iliac crest
62
Transverse Abdonimis insertion
linea alba, pubis
63
Transverse Abdonimis action
compression of abdomen
64
Transverse Abdonimis innervation
first lumbar nerve (T7- L1), iliohypogastric (T12-L1), ilioinguinal (T12-L1)
65
diaphragm origin
cartilage of ribs 7-12, xiphoid process, lumbar vertebrae
66
diaphragm insertion
anterior longitudinal ligament (vertebral column)
67
diaphragm action
expands thoracic cavity, compresses abdominal cavity
68
diaphragm innervation
phrenic nerve (C3-C5)
69
Internal Intercostals origin
superior border of ribs 2-12
70
Internal Intercostals insertion
inferior of ribs above (1-11)
71
Internal Intercostals action
depresses ribs (forced expiration)
72
Internal Intercostals innervation
intercostal nerves
73
External Intercostals origin
lower border of ribs 1-11
74
External Intercostals insertion
upper border of ribs below (2-12)
75
External Intercostals action
elevates ribs (normal inspiration)
76
External Intercostals innervation
intercostal nerves

Anatomy & Physiology I (10 decks)

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