Muscles

Question 1

What are the two Spinotransversales Muscles

Answer 1

1. Splenius Capitus

O: Ligamentum Nuchae, SP C3-T3;

I: Mastoid Process;

A: Ipsilateral rotation of head, extension/lateral flexion of cervical spine/head

2. Splenius Cervicis

O: C7-T6;

I: C1-C3;

A: Extension/lateral flexion of the head/neck, ipsilateral rotation

Question 2

Erector Spinae Group:

Illiocostalis

Origin?

Insertion?

Answer 2

Illiocostalis

• Lumborum* = O: Sacrum, illiac crest; I: Ribs 6-12,
• Thoracis* = O: Ribs 7-12; I: Ribs 1-6
• Cervicis* = O: Ribs 3-7; I: TVP C4-C6

2.

Question 3

Erector Spinae Muscle Group

Longissimus

Origin?

Insertion?

Answer 3

Longissimus

Thoracis = O: Sacrum, Iliac Crest

Cervicis = O: TVP T1-T6, I: TVP C2-C5

Question 4

Erector Spinae Muscle Group

Spinalis

Origin?

Insertion?

Answer 4

Erector Spinae Group

Spinalis

Thoracis = O: SP T10-L3; I: SP T2-T8

Cervicis = O: SP C7; I: SP C2

**Capitis blends with Semispinalis Capitis