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Veterinary Anatomy III > THRA.8 > Flashcards

THRA.8 Flashcards

1
Q

Give the muscle groups of the topic: ‘Muscles of the thoracic and pelvic girdle’

A
  1. Superficial thoracic girdle musculature
  2. Deep thoracic girdle musculature
  3. Pelvic girdle musculature
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2
Q

List the superficial thoracic girdle musculature

A
  1. M. trapezius
  2. M. sternocleidomastoideus
  3. M. omotransversarius
  4. M. latissimus dorsi
  5. M. pectoralis superficialis
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3
Q

M. trapezius

A
  • Pars cervicalis
  • Pars thoracica

Action: Supports trunk, lifts forelimb, moves forelimb caudally

Innervation: Nervi accessorius (CN-XI)

Blood flow: Ramus prescapularis

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4
Q

M. trapezius pars cervicalis

A

Origin: Raph of the neck between C3 & Th2

Insertion: Proximal spina scapulae

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5
Q

M. trapezius pars thoracica

A

Origin: Supraspinsous ligament Th3 - Th9

Insertion: Proximal spina scapulae

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6
Q

Give the components of m. brachiocephalicus

A
  • M. cleidobrachialis
  • M. cleidocephalicus
    • M. cleidooccipitalis (Ru/Su)
    • M. clediomastoideus
    • M. cleidocervicalis (Ca only)
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7
Q

Give the components of m. sternocephalicus

A
  • M. sternomandibularis (Eq/Ru)
  • M. sternomastoideus (Ø Eq)
  • M. sternooccipitalis (Ca)
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8
Q

M. sternocleidomastoideus can be divided into…

A
  • M. brachiocephalicus
  • M. sternocephalicus
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9
Q

Action of the m. brachiocephalicus

A
  • Extend shoulder joint
  • Moves head laterally and downwards
  • Move forelimb cranially
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10
Q

m. cleidobrachialis

A

Origin: Distal, cranial surface of humerus, crista humeri

Insertion: Clavicular intersection

Innervation: Nervi axillaris

Bloodflow: Ramus deltoideus

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11
Q

M. cleidocervicalis

A

Ca only

Origin: Clavicular intersection

Insertion: Dorsal midline (raphe cervicis) on cranial half of neck

Innervation: Nervi accessorius (CN-XI) ramus dorsalis

Bloodflow: A**rteria auricularis caudalis & arteria cervicalis superficialis

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12
Q

M. cleidomastoideus

A

Origin: Clavicular intersection

Insertion: Os temporale pars petrosa pars mastoidea

Innervation: Nervi accessorious (CN-XI) ramus dorsalis

Bloodflow: Arteria auricularis caudalis, arteria cervicalis superficialis and arteria thyroidea cranialis

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13
Q

M. cleidooccipitalis

A

Ru/Su

Origin: Clavicular intersection

Insertion: Crista nuchae, linea nuchae, ligamentum nuchae

Innervation: Nervi accessorius (CN-XI) ramus dorsalis

Bloodflow: Arteria auricularis caudalis and arteria cervicalis superficialis

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14
Q

Action of the m. sternocephalicus

A

Draws head ventrolaterally

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15
Q

M. sternomandibularis

A

Eq/Ru

Origin: Manubrium sterni

Insertion: Fascia masseterica of ramus mandibulae (Ru)

Tuberositas musculi sternomandibularis (Eq)

Innervation: Nervi accessorious (CN-XI) ramus ventralis

Bloodflow: Arteria cervicalis superficialis and arteria thyreoidea cranialis

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16
Q

M. sternomastoideus

A

Ø Eq

Origin: manubrium sterni

Insertion: Os temporale pars petrosa pars mastoidea

Innervation: N**ervi accessorious (CN-XI) ramus ventralis

Bloodflow: Arteria cervicalis superficialis, arteria thyroidea cranialis and arteria laryngea cranialis

17
Q

M. sternooccipitalis

A

Ca only

Origin: manubrium sterni

Insertion: Crista nuchae os occipitale

Innervation: N**ervi accessorious (CN-XI) ramus ventralis

Bloodflow: Arteria cervicalis superficialis and arteria thyroidea cranialis

18
Q

M. omotransversarius

A

Origin: Distal spina scapulae

Insertion: Caudal ala atlantis

Action: Flex neck laterally, draw shoulder cranially

Innervation: N**ervi accessorious (CN-XI)

Bloodflow: Arteria cervicalis superficialis ramus ascendens

19
Q

M. latissimus dorsi

A

Origin: Superficial thoracolumbar fascia Th7 - Th8

Insertion: T**uberositas teres major

Action: Draws limb caudally, flex shoulder

Innervation: N**ervi thoracodorsalis (ex nervi spinalis cervicalis C8)

Bloodflow: Arteria thoracodorsalis

20
Q

M. pectoralis superficialis

A
  • M. pectoralis descendens
  • M. pectoralis transversus

Action: Adducts the forelimb

Innervation: Nervi pectorialis cranialis (ex ramus ventralis of nervis spinales cervicales C7 - C<span>8</span>)

Bloodflow: Arteria thoracica externa and arteria thoracica interna rami perforantes

21
Q

M. pectoralis descendens

A

Origin: manubrium sterni

Insertion: Crista tuberculi majoris (of humerus)

22
Q

M. pectoralis transversus

A

Origin: Sternebrae 1 - 3

Insertion: Crista tuberculi majoris (of humerus) and fascia antebrachii

23
Q

List the deep thoracic girdle musculature

A
  • M. pectoralis profundus
  • M. subclavius (Ø Ca)
  • M. rhomboideus
    • pars capitis (Ca/Su)
    • pars cervicis
    • pars thoracis
  • M. serratus ventralis
    • pars cervicis
    • pars thoracis
24
Q

M. pectoralis profundus

A

Origin: All sternebrae & costal cartilages of true ribs

Insertion: Tuberculum minus (of humerus)

Action: Supports the trunk, adducts and retracts the forelimb

Innervation: Nervi pectoralis caudalis (ex nervis spinales cervicales C8 - Th1)

Bloodflow: Arteria thoracica externa et interna rami perforantes

25
Q

M. subclavius

A

Ø Ca

Origin: Cranial sternum & costal cartilages

Insertion: Epimysium pf m. supraspinatus

Action: Supports the trunk, stabilises the shoulder

Innervation: Nervi pectoralis cranialis (ex ramus ventralis of nervis spinales cervicales C7-C8)

Bloodflow: Arteria thoracica externa et interna rami perforantes

26
Q

Action of M. rhomboideus

A
  • Elevates the forelimb
  • Pulls the scapula agains the trunk
27
Q

M. rhomboideus pars capitis

A

Origin: Crista nuchae (of os occipitale)

Insertion: Dorsomedial border of scapula

Innervation: Nervis spinales cervicales C1-C8 rami ventrales

Bloodflow: Arteria cervicalis profunda and arteria cervicalis superficialis

28
Q

M. rhomboideus pars cervicis

A

Origin: Median raphe of neck to Th1 - Th3 spinous process’

Insertion: Dorsomedial border of scapula

Action: Supports the trunk, adducts and retracts the forelimb

Innervation: Nervis spinales cervicales C1 - C8 rami ventralis

Bloodflow: Arteria cervicalis superficialis

29
Q

M. rhomboideus pars thoracis

A

Origin: Th4 - Th7 spinous process’

Insertion: Dorsomedial border of scapula

Innervation: Nervis spinales cervicales Th1 - Th7 rami ventralis

Bloodflow: Arteria cervicalis superficialis

30
Q

Action of m. serratus ventralis

A
  • Supports the trunk
  • Inspiration
  • Carries the shoulder with the forearm
31
Q

M. serratus ventralis pars cervicis

A

Origin: C2 - C7 transverse process’

Insertion: Dorsomedial border of scapula

Innervation: Nervis spinales cervicales C1 - C8 rami ventralis

Bloodflow: Arteria cervicalis superficialis

32
Q

M. serratus ventralis pars thoracis

A

Origin: Middle of R1-R8

Insertion: Facies serrata scapulae

Innervation: Nervi thoracicus longus (ex nervis spinalis cervicalis C7)

Bloodflow: Arteria subscapularis & arteria thoracica lateralis in Ca

33
Q

List the pelvic girdle musculature

A
  • M. psoas minor
  • M. iliopsoas
    • M. psoas major
    • M. iliacus medialis et lateralis
  • M. quadratus lumborum
34
Q

M. psoas minor

A

Origin: Body of the last few thoracic vertebrae & L1 - L5

Insertion: Tuberculum m. psoas minoris (Eq)

Linea arcuata (Ca)

Near eminentia iliopubica (of os iliaca) (Ru/Su)

Action: Draws pelvis into a deeper position, arches lumbar region

Innervation: Nervi femoralis

Bloodflow: Arteria iliolumbalis

35
Q

Action and bloodflow of m. iliopsoas

A
  • Draws pelvic limb forward
  • Flex hip
  • Flex vertebral column

Bloodflow: Arteria iliolumbalis

36
Q

M. psoas major

A

Origin: lumbar vertebral body and transverse process’

Insertion: Trochanter minor (of femur)

Innervation: Nervi cutaneus femoris lateralis

37
Q

M. iliacus medialis et lateralis

A

Origin: Linea arcuata, lateral border of os iliaca

Insertion: Trochanter minor (of femur)

Innervation: Nervi femoralis

38
Q

M. quadratus lumborum

A

Origin: Lumbar vertebrae transverse process’, Last three thoracic vertebrae transverse processes and ribs.

Insertion: Medial surface of ala iliaca

Innervation: Nervi femoralis

Bloodflow: Arteria iliolumbalis

Veterinary Anatomy III (124 decks)

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