PRAC.12

Question 1

Answer 1

M. latissimus dorsi

Origin: Fascia thoracolumbalis, last few ribs

Insertion: Tuberositas teres major

Action: Draw limb caudally, flex shoulder

Question 2

Answer 2

M. trapezius pars cervicalis

Origin: Median raphe of neck

Insertion: Spina scapulae

Action: Draw limb cranially, elevate forelimb

Question 3

Answer 3

M. trapezius pars thoracica

Origin: Lig. supraspinatus

Insertion: Spina scapulae

Action: Draw limb cranially, elevate forelimb

Question 4

Answer 4

M. pectoralis superficialis pars descendens

Origin: Manubrium sterni

Insertion: Crista tuberculi majoris, crista humeri

Action: Draw limb cranially/caudally, adduct forelimb

Question 5

Answer 5

M. pectoralis superficialis pars transversus

Origin: Sternebrae 1-3

Insertion: Crista tuberculi majoris, crista humeri

Action: Draw limb cranially/caudally, adduct forelimb

Question 6

Answer 6

M. omotransversarius

Origin: Spina scapulae, fascia brachii

Insertion: Ala atlantis

Action: Draws shoulder cranially

Question 7

Answer 7

M. omotransversarius

Origin: Spina scapulae, fascia brachii

Insertion: Ala atlantis

Action: Draws shoulder cranially

Question 8

Answer 8

M. pectoralis profundus

Origin: All sternebrae et cartilago costales of costae verae

Insertion: Tuberculum minus, (tuberculum majus)

Action: Draw limb caudally, support trunk

Question 9

Answer 9

M. rhomboideus pars capitis

Origin: Crista nuchae

Insertion: Margo dorsalis and dorsomedial surface of scapula

Action: Elevate forelimb, pull scapula against trunk

Question 10

Answer 10

M. rhomboideus pars cervicis

Origin: Raphe of neck, processus spinosus of Th₁-Th₃

Insertion: Margo dorsalis and dorsomedial surface of scapula

Action: Elevate forelimb, pull scapula against trunk

Question 11

Answer 11

M. rhomboideus pars thoracis

Origin: Processus spinosus of Th₄-Th₇

Insertion: Margo dorsalis and dorsomedial surface of scapula

Action: Elevate forelimb, pull scapula against trunk

Question 12

Answer 12

M. serratus ventralis cervicis

Origin: Processus transversus of C₂-C₇

Insertion: Facies serrata of scapula

Action: Support trunk, inspiration

Question 13

Answer 13

M. serratus ventralis thoracis

Origin: Rib 1-8

Insertion: Facies serrata of scapula

Action: Support trunk, inspiration

Question 14

N. thoracicus longus innervates…

Answer 14

M. serratus ventralis

Question 15

Answer 15

N. thoracodorsalis

• Originates from C₈
• Innervates: m. latissimus dorsi

Question 16

Answer 16

M. serratus ventralis cervicis

Origin: Processus transversus of C₂-C₇

Insertion: Facies serrata of scapula

Action: Support trunk, inspiration

Question 17

Answer 17

N. pectorales craniales

• From C₆-C₈
• Innervates: m. pectorales superficialis
• Located between descending and transverse superficial pecs.
  
  • ​​’Points’ toward the transverse

Question 18

Answer 18

Nn. pectorales caudalis

• From C₈-T₂
• Supplies: m. pectoralis profundus et ascendens
• Located under the descending superficial pectoral
  
  • Dig through the deep pectoral

Question 19

N. thoracica longus

• Origin
• Innervation

Answer 19

• From C₇
• Supplies: M. serratus ventralis
• Located below serratus ventralis

Question 20

Answer 20

N. thoracicus lateralis

• From C₈-T₁
• Innervates: m. cutaenus trunci
• Located between mm. pectorales and latissimus dorsi