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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

27
Q

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

A

Semispinalis Capitis

28
Q

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)

A

Sternocleidomastoid

29
Q

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

A

Splenius Capitis

30
Q

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

A

Longissimus cervicis

31
Q

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

A

Longissimus thoracis

32
Q

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

A

Thyrohyoid

33
Q

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

A

Scalenes (anterior, middle, posterior)

34
Q

Spinalis:

A

Medial column of erector spinae

Made up of three divisions (spinalis thoracis, spinalis cervicis, and spinalis capitis)

35
Q

Longissimus:

A

Intermediate column of erector spinae

Made up of three divisions (longissimus dorsi, longissimus cervicis, longissimus capitits)

36
Q

Iliocostalis:

A

Lateral column of erector spinae

Made up of three divisions (iliocostalis lumborum, iliocostalis thoracis, iliocostalis cervicis)

39
Q

Rectus abdominis

A

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
Q

External oblique

A

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
Q

Internal oblique

A

Origin: Iliac crest, lumbodorsal fascia
Insertion: Inferior ribs, linea alba
Action: Compresses abdomen, depresses ribs, flexes spine
Innervation: Lower intercostal, ilioinguinal nerves

43
Q

Transverse abdominis – deep to internal oblique

A

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
Q

Diaphragm

A

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)

47
Q

Internal Intercostals

A

Origin: Superior border of ribs 2-12
Insertion: Inferior of ribs above (1-11)
Action: Depresses ribs (forced expiration)
Innervation: Intercostal nerves

48
Q

External Intercostals

A

Origin: Lower border of ribs 1-11
Insertion: Upper border of ribs below (1-12)
Action: Elevates ribs (normal inspiration)
Innervation: Intercostal nerves

50
Q

Medial column of erector spinae

Made up of three divisions (spinalis thoracis, spinalis cervicis, and spinalis capitis)

51
Q

Intermediate column of erector spinae Made up of three divisions (longissimus dorsi, longissimus cervicis, longissimus capitits)

A

Longissimus:

52
Q

Lateral column of erector spinae Made up of three divisions (iliocostalis lumborum, iliocostalis thoracis, iliocostalis cervicis)

A

Iliocostalis:

53
Q

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)

A

Rectus abdominis

54
Q

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

A

External oblique

55
Q

Origin: Iliac crest, lumbodorsal fascia
Insertion: Inferior ribs, linea alba
Action: Compresses abdomen, depresses ribs, flexes spine
Innervation: Lower intercostal, ilioinguinal nerves

A

Internal oblique

56
Q

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

A

Transverse abdominis – deep to internal oblique

57
Q

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)

58
Q

Origin: Superior border of ribs 2-12
Insertion: Inferior of ribs above (1-11)
Action: Depresses ribs (forced expiration)
Innervation: Intercostal nerves

A

Internal Intercostals

59
Q

Origin: Lower border of ribs 1-11
Insertion: Upper border of ribs below (1-12)
Action: Elevates ribs (normal inspiration)
Innervation: Intercostal nerves

A

External Intercostals

A & P I (8 decks)

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