Muscles of back

Question 1

How many layers of back muscles ?

Answer 1

3 layers

Question 2

What is superficial layer muscles ?

Answer 2

1-Trapezus
2-Latesmus dorsi
3-Levetor scapulae
4-Rhomboid minor
5-Rhomboid major

Question 3

What is intermediate layer muscles ?

Answer 3

1-Levator costarum
2-Serratus Posterior superior
3-Serratus Posterior inferior

Question 4

What are deep layer muscles ?

Answer 4

1-Splenius group
2-Erector spine group
3-Transverse spinalis

Question 5

Whats is Action and Type and innervation of Levator costarum?

Answer 5

-Elevation ribs in inspiration
-Intermediate layer
-Dorsal rami of thorathic spinal nerve

Question 6

Whats is Action and Type and innervation of Serratus Posterior superior?

Answer 6

-Elevation ribs in inspiration
-Intermediate layer
-Intercostal nerve

Question 7

Whats is Action and Type and innervation of Serratus Posterior inferior?

Answer 7

-Lowers ribs in expiration
-Intermediate layer
-Intercostal nerve

Question 8

what is name of splaenius group?

Answer 8

-Splenius capitis
-Splenius cervicis

Question 9

Whats is Action and Type of splaenius group?

Answer 9

-Extendand rotate neck and Extendand head in bilateral action
-deep layer

Question 10

What is three Erector spinae ?

Answer 10

1-Spinalis(M)
2-longissimus (InterM)
3-iliocostalis (L)

Question 11

1-Whats is Action and Type of Transverse spinalis ?
2-And its Divides?

Answer 11

1-Extend trunk in bilateral action
-Rotate in unilateral action
2-Semispinalis
-Multifidus
-Rotators