Muscles of the Back Flashcards Preview

Structures > Muscles of the Back > Flashcards

Flashcards in Muscles of the Back Deck (16):
1

Lattimus Dorsi Location and Function

Superficial, large, sides of trunk; extension, adduction, rotation of shoulder joint

2

Location and Function of Rhomboid Major and Minor

Superficial, Under the trapezius; retract and rotate the scapula

3

Location and Function of Levator Scapulae

attached to scapula; elevate the scapula

4

Location and Function of Serratus Posterior Superior

Intermediate, under the trapezoids and rhomboids; Elevation of ribs 2-5

5

Location and Function of Erector Spinae: name the three sub-divisions

Deep, surrounding the spine; extend/bend vertebral column; Ilialcostal, longissimus; Spinalis

6

Location and Function of Trapezius

Superficial,center of upper back; shrugging motion

7

Innervation and Blood Supply of Trapezius

Motor: Spinal Accessory Nerve (CN XI)Proprioception: C3, C4; Branch of Transverse cervical artery/ Dorso scapular artery

8

Innervation and Blood Supply of Latissimus Dorsi

Thoracodorsal Nerve (C6-C8); Subscapular artery (thoracodorsal branch)

9

Innervation and Blood Supply of Rhomboid Major and Minor

Dorsal scapular nerve (C4, C5); Dorsal Scapular Artery

10

Innervation and Blood Supply of Levator Scapulae

C3,C4 and Dorsal scapular nerve (C4, C5); Branches from the transverse and ascending cervical arteries

11

Innervation and Blood Supply of Serratus Posterior Superior

(upper thoracic nerves) Intercostal Nerves, root value T2-5; Intercostal arteries

12

Innervation and Blood Supply of Erector Spinae

Dorsal Rami; lateral sacral artery, along with deep cervical arteries, posterior intercostal arteries, lumbar arteries

13

Innervation and Blood Supply of Serratus Posterior Inferior

(lower thoracic nerves) Intercostal nerves, root value T9-12; Inter-costal arteries, intercostal arteries

14

Location and Function of Serratus Posterior Inferior

Intermediate, deep to the lats; Depression of ribs 9-12, prevents ribs from moving when diaphragm expands so that the diaphragm will affect lungs

15

Transversospinalis Location and Function

Rotates and Extended vertebral column, directly lateral to spine

16

Transversospinalis innervation and blood flow

Dorsal Rami; lateral sacral artery, along with deep cervical arteries, posterior intercostal arteries, lumbar arteries