(L4) Back Myology Flashcards
1
Q
What are the muscles in the first layer of the back?
L4 S3
A
- Trapezius M.
- Latissimus dorsi M.
2
Q
What are the muscles in the second layer of the back?
L4 S6
A
- Levator scapulae M.
- Rhomboid minor M.
- Rhomboid major M.
3
Q
What are the muscles in the third layer of the back?
L4 S9
A
- Serratus posterior superior M.
- Serratus posterior inferior M.
4
Q
What are the muscles in the fourth layer of the back?
L4 S11
A
- Splenius capitis M.
- Splenius cervicis M.
5
Q
What are the muscle groups in the fifth layer of the back?
What is the collective name of the muscles in this layer?
L4 S13-14
A
Erector Spinae:
- Iliocostalis
- Longissimus
- Spinalis
6
Q
What are the muscles in the sixth layer of the back?
What is the collective name of the muscles in this layer?
L4 S20
A
Transversospinalis Ms.:
- Semispinalis Ms. (5-6 segments)
- Multifidus Ms. (3-4 segments)
- Rotatores longus Ms. (2 segments)
- Rotatores brevis Ms. (1 segment)
7
Q
Which of the suboccipital muscles form the suboccipital triangle?
L4 S28
A
- rectis capitis posterior major M.
- obliquus capitis superior M.
- obliquus capituus inferior M.
The rectus capitus posterior minor M. is not involved.
8
Q
Which of the suboccipital muscles do not attach to the occiput?
L4 S28
A
Obliquus capitus inferior M.
