Anat-Class Extrinsic Thoracic Limb.txt

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Author:
Mawad
ID:
286563
Filename:
Anat-Class Extrinsic Thoracic Limb.txt
Updated:
2014-10-21 17:31:14
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Thoracic limb
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vetmed anatomy
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  1. What are the functions of the thoracic limb?
    weight-bearing and propulsion
  2. the trochlea lies _____ to the capitulum; it articulates with...
    medially; radius and the ulna
  3. the capitulum lies _____ to the trochlea and articulates with...
    laterally; the radius only
  4. the anconeal process occupies the _____ of the humerus when the elbow is extended.
    olecranon fossa
  5. the trochlear notch is located _______ to the anconeal process.
    distally
  6. what bony structures of the ulna are prone to fracture?
    anconeal process, medial and lateral coronoid processes
  7. deltoideus originates at the _____.
    acromion
  8. biceps brachii originates at the ______.
    supraglenoid tubercle
  9. coracobrachialis originates at the _________.
    coracoid process of the scapula
  10. the head of the humerus articulates with the _________.
    glenoid tubercle
  11. which epicondyle is more prone to fracture?
    lateral epicondyle (smaller)
  12. ________ sits in the intertubercular groove.
    the biceps brachi tendon
  13. which soft tissue structures pass through the supratrochlear foramen?
    none
  14. the medial epicondyle provides origins for _______ of the antebrachium.
    flexor muscles
  15. the lateral epicondyle provides origins for ______ of the antebrachium.
    extensor
  16. unlike the canine humerus, the feline humerus has a ________.
    supracondylar foramen (instead of a supratrochlear foramen)
  17. the feline supracondylar foramen is located ________ to where the canine supratrochlear foramen is located.
    distomedially
  18. what soft tissue structures pass through the feline supracondylar foramen?
    brachial artery and median nerve
  19. what is the purpose of the radius?
    weight support
  20. what is the purpose of the ulna?
    muscle attachment
  21. how are the radius and the ulna associated proximally?
    the radius is lateral and the ulna is medial
  22. how are the radius and ulna associated distally?
    the radius is medial and the ulna is lateral
  23. the accessory carpal bone is located ________.
    laterally
  24. what is absent in digit I?
    the middle phalanx
  25. the common digital extensor muscle inserts at...
    the extensor processes on the ungual shelf of the distal phalanges of digits II-V
  26. what are the functions of the extrinsic muscles of the thoracic limb?
    to move the body forward and backward, running
  27. the thoracic limb is attached to the body by _______, instead of a conventional joint.
    synsarcosis
  28. the superficial pectoral muscle is innervated by _______; it has two parts...
    cranial pectoral nerve; descending pec and transverse pec (transverse is caudal and deep to descending)
  29. the function of the superficial pectoralis is....
    adduction
  30. the deep pectoral muscle is innervated by...
    caudal pectoral nerve
  31. the functions of the deep pectoralis include...
    pull trunk cranially, draw limb caudally, adduct the limb
  32. brachiocephalicus muscle is innervated by...
    accessory nerve and ventral branches of cervical spinal nerves
  33. describe the brachiocephalicus muscle
    • cleidobrachialis- distal to the clavicular tendon; inserts on the humerus
    • cleidocervalicus- proximal to the clavicular tendon and superfcial to cleidomastoideus
    • cleidomastoideus- proximal to the clavicular tendon and deep to cleidocervicalis
  34. sternocephalicus is innervated by...
    the accessory nerve and ventral branches of cervical spinal nerves
  35. what are the two parts of the sternocephalicus and what is its function?
    mastoid and occipital; to draw the head and neck to the side
  36. omotransversarius is innervated by...
    accessory nerve
  37. what is the function of omotransversarius?
    to advance the limb and flex the neck
  38. trapezius is innervated by...
    accessory nerve
  39. what is the function of trapezius?
    to elevate and abduct the limb
  40. rhomboideus is innervated by...
    ventral branches of the cervical and thoracic spinal nerves
  41. what is the function of rhomboideus?
    to elevate the limb and draw the scapula against the trunk
  42. what are the three parts of the rhomboideus muscle?
    capitis (to head), cervicis, thoracis
  43. latissimus dorsi is innervated by...
    thoracodorsal nerve
  44. what are the functions of latissimus dorsi?
    digging, to flex the shoulder joint
  45. serratus ventralis is innervated by...
    ventral branches of the cervical spinal nerves, the long thoracic nerve
  46. what is the function of serratus ventralis?
    support the trunk and depress the scapula
  47. what are the parts of the serratus ventralis?
    cervicis and thoracis
  48. what muscle is severed to remove the thoracic limb?
    serratus ventralis
  49. the cutaneous trunci is innervated by...
    lateral thoracic nerve
  50. what is the function of the cutaneous trunci?
    to twitch the skin
  51. bony prominance located where the tricipital line of the humerus ends.
    deltoid tuberosity

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