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Anatomy 3 final (practical and oral part) > Practical topic 16 > Flashcards

Practical topic 16 Flashcards

Carpal and digital flexors of the forelimb, their nerves, blood supply of the forearm

1
Q

Give the carpal flexors of the forelimb

A
  1. Flexor carpi radialis
  2. Flexor carpi ulnaris
  • Caput humerale
  • Caput ulnare
  1. Flexor digitorum superficialis
  2. Flexor digitorum profundus
  • Caput humerale
  • Caput radiale
  • Caput ulnare
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2
Q

Give the digital flexors of the forelimb

A
  1. Flexor digitorum superficialis
  2. Flexor digitorum profundus
  • Caput humerale
  • Caput radiale
  • Caput ulare
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3
Q

M. flexor carpi radialis

A

Origin: Epicondylus medialis of humerus, behind collateral ligament.

Insertion: Mc 2-3, palmar surface of metacarpal base.

Action: Flexes carpal joint

Innervation: N. Medianus

Blood supply: A. Profunda antebrachii

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4
Q

M. Flexor digitorum profundus

A

Origin:

  • Caput humerale:
    • Epicondylus meialis of humerus.
  • Caput radiale:
    • Proximo-medially from radius.
  • Caput ulnare:
    • Proximo-caudally from ulna.

Insertion: Distal phalanx of digits 1-5 on palmar surface. On the last phalanxes´ flexor tubercle.

Action: Flexes carpus and joints of digits 1-5

Innervation:

  • Caput humerale
    • N. Ulnaris et medianus
  • Caput ulnare et radiale:
    • N. ulnaris

Blood supply: A. ulnaris

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5
Q

M. Flexor digitorum superficialis

A

Origin: Epicondylus medialis of humerus

Insertion: Middle phalanx of digits 2-5 on palmar surface

Action: Flexes carpus and affected joints of digits 2-5.

Innervation: N. Ulnaris et medianus

Blood supply: Profunda antebrachii

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6
Q

M. supinator

A

Origin: Lateral epicondyle of humerus

Insertion: Cranial surface of the proximal fourth of the radius (directly on the bone)

Action: To supinate the forearm and forefoot (To rotate the forearm laterally)

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7
Q

M. pronator teres

A

Origin: The medial epicondyle of the humerus

Insertion: The craniamedialsurface of the proximal radius

Action: To pronate the forearm (rotate the forearm medially so that the palmar side of the paw faces the ground)

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8
Q

M. pronator quadratus

A

When seen from medially, it covers the spatium interossum antebrachii

Elongated rectangular shape, fibers running transverse between radius and ulna

Covered partly by the common digital extensor

Attachments: The apposed surfaces of radius and ulna

Action: To pronate the paw

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9
Q

N. mediana

  1. Supplies
  2. Where does it run?
A
  1. Supplies most of the flexor muscles of the carpus and digit:
    • M. pronator teres
    • M. pronator quadratus
    • M. flexor carpi radialis
    • M. flexor digitorum superficialis
    • M. flexor digitorum profundus:
      • Caput radialis
      • Caput humerale
      • Caput ulnare
  2. Run distal with brachial flexor
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10
Q

N. ulnaris

  1. Supplies
  2. Localization
  3. Branches
A
  1. Flexor muscles form digit IV and V
  2. Lies on the caudal surface of m. flexor digitorum profundus, deep to the humeral head of m. flexor carpi ulnaris
  3. Dorsal and palmar branch
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11
Q

A. interossea communis

  1. Which vessel is it a branch of?
  2. Where does it arise?
  3. What does it divide into?
A
  1. The biggest branch of the a. brachialis
  2. Arises distal to the elbow and proceeds to spatium interosseum antebrachii
  3. Divides into:
    • A. interossea cranialis
    • A. interossea caudalis
    • A. ulnaris (Car)
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12
Q

Give the branches of a. mediana

A
  • A. profunda antebrachii
  • A. radialis
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13
Q
A
  1. M. flexor digitorum profundus
  2. M. flexor digitorum profundus, caput radialis
  3. M. flexor digitorum profundus, caput ulnaris
  4. M. flexor digitorum superficialis
  5. M. flexor carpi radialis
  6. M. pronator teres
  • * Flexor retinaculum
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14
Q

Medial view

A
  1. M. flexor digitorum profundus, caput humerale
  2. M. flexor digitorum profundus, caput radiale
  3. M. flexor digitorum profundus, caput ulnare
  4. M. flexor digitorum superficialis
  5. M. flexor carpi radialis
  6. M. flexor carpi ulnaris
  7. M. pronator teres
  8. Radius
  • * M. pronator quadratus
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15
Q

Medial view of the elbow region

A
  • * M. biceps brachii reflected
  • A. brachialis
  • N. mediana
  • M. pronator teres
  • M. flexor carpi radialis
  • N. ulnaris
  • N. cutaneus antebrachii medialis
  • N. cutaneus antebrachii caudalis
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Anatomy 3 final (practical and oral part) (128 decks)

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