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36 Cards in this Set

  • Front
  • Back
Name groups we divide back muscles into?
- Spinohumeral
- Spinocostal
- Intrinsic back muscles:
(Erector spinae
Straight muscles
Oblique muscles)

- Short mucles of neck
Spinohumeral muscles?
- Rhomboid major
- Rhomboid minor
- Trapezius
Rhomboid major; OIF?
O: Spinous process of T1-T4
I: Meidial margin of scapula
F: Retraction of shuolders
Rhomboid minor; OIF?
O: SPinous process of C6-C7
I: Medial border of scapula
F: Retraction of shoulders
3 parts of trapezius?
1. Descending part
2. Transverse part
3. Ascending part
Descending part of trapezius; OI?
O: Superior nuchal line + occipital protuberance
I: Lateral 1/3 of clavicle
Transverse part of trapezius; OI?
O: C7-T3 vertebrae
I: Acromial end of clavicle, acromion
Ascending part of trapezius; OI?
O: T2-T12 vertebrae
I: Triangular portion of spine of scapula
Spinocostal muscles?
Serratus posterior superior
Serratus posterior inferior
Serratus posterior superior; OI?
O: Spinous process of C6-C7 & T1-T2
I: Rib 2-5
Serratus posterior inferior; OI?
O: Spinous process of T11-T12
I: Caudal 4 ribs
Intrinsic back muscles are innervated by?
Dorsal branch of spinal nerve
The 2 muscle columns of intrinsic back muscles lie in?
Osteofibrous canal along vertebral column
The 2 muscle columns of intrinsic back muscles are covered by?
Thoracolumbar fascia
Function of the 2 muscle columns of intrinsic back muscles lie in?
- Posture
- Movements of head
- Extension
- Rotation
Erector spinae muscles?
- Intertransverse
- Spinotransversal
Intertransverse erector spinae muscles?
- Iliocostalis lumborum
- Iliocostalis thoracis
- Iliocostalis cervicis
- Longissimus thoracis
- Longissimus cervicis
- Longissimus capitis
Iliocostalis lumborum; OI?
O: Sacrum, iliac crest & thoracolumbar fascia
I: Upper lumbar vertebrae & lower 6-9 ribs
Iliocostalis thoracis; OI?
O: Lower 6 ribs
I: Upper 6 ribs
Iliocostalis cervicis; OI?
O: 3-6 ribs
I: Transverse processes of C4-C6
Longissimus thoracis; OI?
O: Sacrum, lumbar&lower thoracic spinous processes
I: 2nd rib
Longissimus cervicis; OI?
O: Transverse processes of T1-T6
I: Transverse processes of C2-C5
Longissimus capitis; OI?
O: Transverse process of T3-T5 & C5-C7
I: Mastoid process
Splenius cervicis; OI?
O: Spinous processes of C4-C6
I: Transverse processes of C1-C2
Splenius capitis; OI?
O: SPinous processes of T1-T3 & C4-C7
I: Mastoid process
2 main group of the erector spinae?
1. Lateral superficial tract
2. Medial deep tract
Name interspinales muscles?
1. Interspinales cervicis
2. Interspinales thoracis
3. Interspinales lumborum
What are the intertransversarii muscles?
- 6 posterior intertransversarii cervicis
4 medial intertransversarii lumborum
Straight mucles of deep medial tract?
- Interspinal muscles
- Intertransversarii muscles
- Spinalis muscle
3 spinalis muscles?
1. Spinalis thoracis
2. Spinalic cervicis
3. Spinalis capitis
Spinalis thoracis; OI?
O: Spinous process of 3rd lumbar
I: Spinous process of C8-C2
Spinalis cervicis; OI?
O: spinous processes of T2--> C6
I: Spinous processes of C2-C4
Oblique muscles of deep medial tract?
- Rotator brevis & longus
- Multifidus
- Semispinalis (lumborum, thoracis, cervicis)
- Sempispinalis capitis - strongest of neck
Rotator brevis & longus muscle; OI?
O: Transverse process
I: Next higher spinous process
Multifidus musclce; OI?
O: Sacrum
I: Cervical vertebra
Semispinalis muscle; OI?
O: Transverse process of all thoracic vertebra
I: SPinous processes of upper 6 thoracic & C1-C4