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A & P I > Module 5 - Muscular System > Flashcards

Module 5 - Muscular System Flashcards

1
Q

Action: mouth closure: closes lips, protrudes lips forward, presses lips against teeth
Innervation: Facial nerve (CN VII)

A

Orbicularis oris

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2
Q

Action: Elevates mandible, closes jaw
Innervation: Trigeminal nerve (CN V, mandibular branch)

A

Temporalis

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3
Q

Masseter

A

Action: jaw closure
Innervation: Trigeminal nerve (CN V, mandibular branch)

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4
Q

Action: jaw closure
Innervation: Trigeminal nerve (CN V, mandibular branch)

A

Masseter

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5
Q

Action: pull corners of lips upward
Innervation: Facial nerve (CN VII)

A

Zygomaticus major/minor

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6
Q

Action: eye closure
Innervation: Facial nerve (CN VII)

A

Orbicularis Oculi

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7
Q

Orbicularis Oculi

A

Action: eye closure
Innervation: Facial nerve (CN VII)

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8
Q

Action : pulls the corners of the mouth posteriorly (grin or grimace)
Innervation: Facial nerve (CN VII)

A

Risorius

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9
Q

Risorius

A

Action : pulls the corners of the mouth posteriorly (grin or grimace)
Innervation: Facial nerve (CN VII)

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10
Q

Action: raise eyebrows
Innervation: Facial nerve (CN VII)

A

Frontalis (occipitofrontailis)

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11
Q

Temporalis

A

Action: Elevates mandible, closes jaw
Innervation: Trigeminal nerve (CN V, mandibular branch)

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12
Q

Frontalis (occipitofrontailis)

A

Action: raise eyebrows
Innervation: Facial nerve (CN VII)

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13
Q

Action: compress cheeks
Innervation: Facial nerve (CN VII)

A

Buccinator

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14
Q

Buccinator

A

Action: compress cheeks
Innervation: Facial nerve (CN VII)

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15
Q

Zygomaticus major/minor

A

Action: pull corners of lips upward
Innervation: Facial nerve (CN VII)

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16
Q

Orbicularis oris

A

Action: mouth closure: closes lips, protrudes lips forward, presses lips against teeth
Innervation: Facial nerve (CN VII)

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17
Q
A
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18
Q

Semispinalis Capitis

A

O: Articular processes of inferior cervical & transverse process of superior thoracic vertebrae
I: Occipital bone
A:Bilateral extend head, Unilateral laterally flexes neck to same side
I: Spinal nerves

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19
Q

Sternocleidomastoid

A

Origin: Sternal end of clavicle and manubrium
Insertion: Mastoid region of skull
Action:
Bilateral: Neck flexion
Unilateral: Turns face to opposite side
Innervation: Accessory nerve (CN XI)

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20
Q

Splenius Capitis

A

Origin: Spinous process/ligaments of inferior cervical vertebrae
Insertion: Mastoid process, occipital bones of skull
Action:
Bilateral extend head
Unilateral laterally flexes neck to same side

Innervation: Cervical spinal nerves

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21
Q

Longissimus cervicis

A

Origin: transverse processes of superior thoracic vertebrae
Insertion: transverse process of middle and superior cervical vertebrae
Action:
Bilateral extend head
Unilateral laterally flexes neck to same side

Innervation: Cervical and thoracic spinal nerves

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22
Q

Longissimus thoracis

A

Origin: Transverse process of inferior thoracic, superior lumbar vertebrae
Insertion: Transverse process of middle and superior cervical vertebrae
Action:
Bilateral extend head
Unilateral laterally flexes neck to same side

Innervation: Thoracic and lumbar spinal nerves

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23
Q

Thyrohyoid

A

Origin: Thyroid cartilage of larynx
Insertion: Hyoid bone
Action: Elevates thyroid, depresses hyoid bone
Innervation: Hypoglossal nerve

24
Q

Scalenes (anterior, middle, posterior)

A

Origin: Transverse processes of C2- C7
Insertion: 1st and 2nd Ribs
Action: Elevates ribs 1 & 2
Innervation: Cervical spinal nerves

25
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Origin: Articular processes of inferior cervical & transverse process of superior thoracic vertebrae Innervation: Occipital bone Action: Bilateral- Extends the head Unilateral - Lateral flexion of the neck to the same side Innervation: Spinal nerves
Semispinalis Capitis
28
Origin: Sternal end of clavicle and manubrium Insertion: Mastoid region of skull Action: Bilateral: Neck flexion Unilateral: Turns face to opposite side Innervation: Accessory nerve (CN XI)
Sternocleidomastoid
29
Origin: Spinous process/ligaments of inferior cervical vertebrae Insertion: Mastoid process, occipital bones of skull Action: Bilateral extend head Unilateral laterally flexes neck to same side Innervation: Cervical spinal nerves
Splenius Capitis
30
Origin: transverse processes of superior thoracic vertebrae Insertion: transverse process of middle and superior cervical vertebrae Action: Bilateral extend head Unilateral laterally flexes neck to same side Innervation: Cervical and thoracic spinal nerves
Longissimus cervicis
31
Origin: Transverse process of inferior thoracic, superior lumbar vertebrae Insertion: Transverse process of middle and superior cervical vertebrae Action: Bilateral extend head Unilateral laterally flexes neck to same side Innervation: Thoracic and lumbar spinal nerves
Longissimus thoracis
32
Origin: Thyroid cartilage of larynx Insertion: Hyoid bone Action: Elevates thyroid, depresses hyoid bone Innervation: Hypoglossal nerve
Thyrohyoid
33
Origin: Transverse processes of C2- C7 Insertion: 1st and 2nd Ribs Action: Elevates ribs 1 & 2 Innervation: Cervical spinal nerves
Scalenes (anterior, middle, posterior)
34
Spinalis:
Medial column of erector spinae Made up of three divisions (spinalis thoracis, spinalis cervicis, and spinalis capitis)
35
Longissimus:
Intermediate column of erector spinae Made up of three divisions (longissimus dorsi, longissimus cervicis, longissimus capitits)
36
Iliocostalis:
Lateral column of erector spinae Made up of three divisions (iliocostalis lumborum, iliocostalis thoracis, iliocostalis cervicis)
37
39
Rectus abdominis
Origin: Pubic Crest, pubic symphysis Insertion: Cartilages of ribs 5-7, xiphoid process Action: Flexion of spine, compression of abdominal viscera Innervation: Spinal nerves (T 7-T 12)
40
External oblique
Origin: Sternum, ribs (5-12) Insertion: Linea alba, iliac crest Action: Bilaterally: Flexion of the spine, compress the abdomen; Unilaterally: Flexes trunk to same side, rotates to opposite side Innervation: Lower intercostal, ilioinguinal nerves
41
Internal oblique
Origin: Iliac crest, lumbodorsal fascia Insertion: Inferior ribs, linea alba Action: Compresses abdomen, depresses ribs, flexes spine Innervation: Lower intercostal, ilioinguinal nerves
42
43
Transverse abdominis – deep to internal oblique
Origin: Lateral inguinal ligament, inner iliac crest Insertion: Linea alba, pubis Action: Compression of abdomen Innervation: First lumbar nerve (T 7- L1), iliohypogastric (T12-L1), ilioinguinal (T12-L1
45
Diaphragm
Origin: Cartilage of ribs 7-12, xiphoid process, lumbar vertebrae Insertion: Anterior longitudinal ligament (vertebral column) Action: Expands thoracic cavity, compresses abdominal cavity Innervation: Phrenic nerve (C3-5)
46
47
Internal Intercostals
Origin: Superior border of ribs 2-12 Insertion: Inferior of ribs above (1-11) Action: Depresses ribs (forced expiration) Innervation: Intercostal nerves
48
External Intercostals
Origin: Lower border of ribs 1-11 Insertion: Upper border of ribs below (1-12) Action: Elevates ribs (normal inspiration) Innervation: Intercostal nerves
50
Medial column of erector spinae Made up of three divisions (spinalis thoracis, spinalis cervicis, and spinalis capitis)
Spinalis:
51
Intermediate column of erector spinae Made up of three divisions (longissimus dorsi, longissimus cervicis, longissimus capitits)
Longissimus:
52
Lateral column of erector spinae Made up of three divisions (iliocostalis lumborum, iliocostalis thoracis, iliocostalis cervicis)
Iliocostalis:
53
Origin: Pubic Crest, pubic symphysis Insertion: Cartilages of ribs 5-7, xiphoid process Action: Flexion of spine, compression of abdominal viscera Innervation: Spinal nerves (T 7-T 12)
Rectus abdominis
54
Origin: Sternum, ribs (5-12) Insertion: Linea alba, iliac crest Action: Bilaterally: Flexion of the spine, compress the abdomen; Unilaterally: Flexes trunk to same side, rotates to opposite side Innervation: Lower intercostal, ilioinguinal nerves
External oblique
55
Origin: Iliac crest, lumbodorsal fascia Insertion: Inferior ribs, linea alba Action: Compresses abdomen, depresses ribs, flexes spine Innervation: Lower intercostal, ilioinguinal nerves
Internal oblique
56
Origin: Lateral inguinal ligament, inner iliac crest Insertion: Linea alba, pubis Action: Compression of abdomen Innervation: First lumbar nerve (T 7- L1), iliohypogastric (T12-L1), ilioinguinal (T12-L1
Transverse abdominis – deep to internal oblique
57
Origin: Cartilage of ribs 7-12, xiphoid process, lumbar vertebrae Insertion: Anterior longitudinal ligament (vertebral column) Action: Expands thoracic cavity, compresses abdominal cavity Innervation: Phrenic nerve (C3-5)
Diaphragm
58
Origin: Superior border of ribs 2-12 Insertion: Inferior of ribs above (1-11) Action: Depresses ribs (forced expiration) Innervation: Intercostal nerves
Internal Intercostals
59
Origin: Lower border of ribs 1-11 Insertion: Upper border of ribs below (1-12) Action: Elevates ribs (normal inspiration) Innervation: Intercostal nerves
External Intercostals

A & P I (8 decks)

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