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Vet Anatomy > Thoracic limb > Flashcards

Thoracic limb Flashcards

1
Q

The muscles of the forelimb is made up of what 2 parts?

A

the girdle
musculature and intrinsic musculature

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2
Q

Girdle muscles function

A

They join the forelimb to the trunk

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3
Q

Name the 5 girdle muscles in the superficial layer

A
  1. Trapezius
  2. Omotransversarius
  3. Brachiocephalicus
  4. Latissimus dorsi
  5. Pectoral muscle
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4
Q

Name the 3 girdle muscles in the deep layer

A
  1. Rhomboideus
  2. Serratus ventralis
  3. Pectoralis profundus
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5
Q

What are the 3 Muscle groups Acting Primarily on the Shoulder Joint ? (Intrinsic musculature)

A

Lateral group
Medial group
Caudal/Flexor group

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6
Q

Name the two muscles acting on the shoulder joint in the lateral group

A

Supraspinatus
Infraspinatus

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7
Q

Name the two muscles acting on the shoulder joint in the medial group

A

Subscapularis
Coracobrachialis

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8
Q

Name the 3 muscles acting on the shoulder joint by the caudal/flexor group

A

Deltoideus
Teres major
Teres minor

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9
Q

What are the 2 muscle groups primarily acting on the elbow joint?

A

Extensor group
Flexor group

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10
Q

Name the 3 muscles acting primarily on the elbow joint in the extensor group

A

Extensor group
triceps brachii
tensor fasciae antebrachii
Anconeus

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11
Q

Name the 2 muscles acting primarily on the elbow joint in the flexor group

A

Flexor group
biceps brachii
brachialis

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12
Q

What 2 muscle groups primarily act on the forearm?

A

Pronator and Supinator Muscles of the Forearm

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13
Q

Name the 2 pronator muscles (forearm)

A

Pronator group
Pronator teres
Pronator quadratus

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14
Q

Name the 2 supinator muscles (forearm)

A

Supinator group
Brachioradialis or long supinator
Short supinator

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15
Q

What are the two muscles groups acting Primarily on the Carpal and Digital Joints?

A
  1. The Extensor Muscles of the Carpus and
    Digits
  2. The Flexor Muscles of the Carpus and
    Digits
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16
Q

Name the 3 Extensor Muscles of the Carpus and Digits

A

extensor carpi radialis
ulnaris lateralis
extensor carpi obliquus

17
Q

Name the 4 flexor Muscles of the Carpus and Digits

A

flexor carpi radialis
flexor carpi ulnaris
superficial digital flexor
Deep digital flexor

18
Q

Name the shoulder and arm muscles

A
19
Q

Name the shoulder and arm muscles

A
20
Q

Name the forearm muscles

A
21
Q

What is the brachial plexus?

A

A network of nerves that supplies sensory and motor innervation to almost all structures of the forelimb

22
Q

What structures does the brachial plexus not innervate? (4)

A

The trapezius, omotransversarius, brachiocephalicus, and rhomboideus

23
Q

The brachial plexus is usually formed by
contributions from….

A

….. the last three cervical and the first two thoracic nerves

24
Q

What is responsible for innervation of the superficial layer of the girlde muscles?

A

Accessory nerve
Axillary nerve

25
Q

What is responsible for innervation of the deep layer of the girlde muscles?

A
  • Rhomboideus (brachial plexus)
  • Serratus ventralis (long thoracic nerve of the brachial plexus)
  • Pectoralis profundus (caudal pectoral nerves of the brachial plexus)
26
Q

Intrinsic musculature - innervation of Lateral group

A

suprascapular nerve from the brachial plexus

27
Q

Intrinsic musculature - innervation of Medial group

A

proximal branch of the musculocutaneous nerve from the brachial plexus

28
Q

Intrinsic musculature - innervation of Caudal/Flexor group

A

axillary nerve from the brachial plexus

29
Q

Intrinsic musculature - innervation of Extensor group

A

radial nerve from the brachial plexus

30
Q

Intrinsic musculature - innervation of Flexor group

A

Musculocutaneous nerve

31
Q

Intrinsic musculature - innervation of Pronator group

A

Median nerve

32
Q

Intrinsic musculature - innervation of Supinator group

A

Radial nerve

Vet Anatomy (4 decks)

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