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Muscles Anatomy > Spine/Thorax > Flashcards

Spine/Thorax Flashcards

1
Q

Erector Group
Origin & Insertion of the Spinalis

A

Origin:
-SP of the upper lumbar and lower thoracic vertebrae
- Ligamentum nuchae, SP C7
Insertion:
- SP upper thoracic
- SP of cervical except C1

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2
Q

Erector Group
Origin & Insertion of the longissimus

A

Origin:
- Common tendon
- TVPS upper 5 thoracic vertebrae
Insertion:
- Lower 9 ribs & TVP thoracic vertebrae
- TVP of cervical vertebrae
- Mastoid process of temporal bone

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3
Q

Erector Group
Origin & Insertion of the Iliocostalis

A

Origin:
- common tendon
- Posterior surface of ribs 1-12
Insertion:
- TVP of lumbar vertebrae 1-3 and posterior surface of ribs 6-12
- Posterior surface of ribs 1-6
- TVP lower cervicals

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4
Q

Name the action of the Erector Group Muscles

A

Unilaterally: laterally flex vertebrae column to the same side
Bilaterally: extend vertebral column

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5
Q

Name the nerves of the erector group muscles

A

Spinal

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6
Q

Origin & Insertion of Splenius Capitis

A

Origin:
- Inferior 1/2 of ligamentum nuchae
- SP C7 - T4
Insertion:
- Mastoid process
- Lateral portion of superior nuchal line

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7
Q

Name the Action of Splenius Capitis

A

Unilaterally:
- Rotate head/neck to the same side
- Laterally Flex head/neck to the same side
Bilaterally:
Extend the head/neck

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8
Q

Name the Nerve of Splenius Capitis

A

Cervical

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9
Q

Origin & Insertion of Splenius Cervicis

A

Origin: SP T3-T6
Insertion: TVP C1- C3

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10
Q

Action of the Splenius Cervicis

A

Unilaterally:
- Laterally flex head/neck to the same side
- Rotate head/neck to the same side
Bilaterally:
Extend the head/neck

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11
Q

Name the Nerve of Splenius Cervicis

A

Cervical

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12
Q

Origin & Insertion of Quadratus Lumborum (QL)

A

Origin: Posterior Iliac Crest
Insertion:
- Last rib
- TVP 1-4 lumbar vertebrae

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13
Q

Actions of Quadratus Lumborum

A

Unilaterally:
- Laterally tilt the pelvis
- Laterally flex the vertebrae column to the same side
Bilaterally:
- Fix the last rib during inhalation
- Extend the vertebrae column

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14
Q

Name the Nerve of Quadratus Lumborum

A

Lumbar plexus T12, L1,2,3

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15
Q

Origin & Insertion of Rectus Abdominis

A

Origin:
- Pubic crest
- Pubic symphysis
Insertion:
- Cartilage of 5,6,7 ribs
- Xiphoid process

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16
Q

Action of Rectus Abdominis

A
  • Flex the vertebrae column
  • Tilt the pelvis posteriorly
17
Q

Nerve of Rectus Abdominis

A

T5-T12 , ventral rami

18
Q

Origin & Insertion of External Oblique

A

Origin:
External surface of 5-12th ribs
Insertion:
- Anterior part of the iliac crest
- Rectus sheath to linea alba

19
Q

Actions of External Oblique

A

Unilaterally:
- Laterally flex vertebrae column to the same side
- Rotate vertebrae column to the opposite side
Bilaterally:
- Flex the vertebral column
- Compress abdominal contents

20
Q

Nerves of External Oblique

A

T5-T12

21
Q

Origin & Insertion of Internal Oblique

A

Origin:
- Lateral inguinal ligament
- Iliac crest
- Thoracolumbar fascia
Insertion:
- Internal surface of lower 3 ribs
- Rectus sheath to linea alba

22
Q

Actions of Internal Oblique

A

Unilaterally:
- Laterally flex vertral column to the same side
- Rotate vertebral column to the same side
Bilaterally
- Flex the vertebral column
- Compress abdominal contents

23
Q

Nerves of Internal Oblique

A
  • T7-T12, L1
  • iliohypogastric and ilioinguinal
  • ventral rami
24
Q

Origin & Insertion of Transverse Abdominis

A

Origin:
- Lateral inguinal ligament
- iliac crest
- Thoracolumbar fascia
- Internal surface of the lower 6 ribs
Insertion:
Rectus sheath to linea alba

25
Q

Action of Transverse Abdominis

A

Compress abdominal contents

26
Q

Nerves of Transverse Abdominis

A

T7-12, L1
- Iliohypogastric and ilioinguinal
- ventral division

27
Q

Origin & Insertion of the Diaphragm

A

Origin:
- inner surface of lower 6 ribs
- upper 2 or 3 lumbar vertebrae
- inner part of xiphoid process
Insertion:
central tendon

28
Q

Actions of the Diaphragm

A
  • Draw down the central tendon of the diaphragm
  • Increase the volume of the thoracic cavity during inhalation
29
Q

Nerves of the Diaphragm

A

Phrenic C3,4,5

30
Q

Origin & Insertion of Serratus Posterior Superior

A

Origin: SP C7-T3
Insertion: Posterior surface of 2-5th ribs

31
Q

Action of Serratus Posterior Superior

A

Elevate the ribs during inhalation

32
Q

Nerve of Serratus Posterior Superior

A

T1,2,3,4

33
Q

Origin & Insertion Serratus Posterior Inferior

A

Origin: SP T12-L3
Insertion: Posterior surface of the 9-12th ribs

34
Q

Action of Serratus Posterior Inferior

A

Depress the ribs during exhalation

35
Q

Nerve of Serratus Posterior Inferior

A

T9-12

Muscles Anatomy (5 decks)

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