Thoracic Limb Flashcards
What bone makes up the “shoulder”
Scapula b.
What region does the humerus comprise?
Brachium
What region do the radius and ulna comprise?
Antebrachium
What bones are included in the carpus?
Carpal bones
What bones are in the manus?
Carpals, metacarpals, digits.
Where is the supraspinous fossa?
Cranial aspect to the spine of the scapula
Where is the infraspinous fossa?
Caudal aspect to the spine of scapula
Where is the acromion found? In what animals is it not present?
Enlarged Distal end of spine; not on the horse scapula
What is the bony landmark of the elbow?
Olecranon of the Ulna
What is the styloid process of the ulna?
Distal Tapering of ulna
Participates in antebrachiocarpal jt.
Attaches to short lateral collateral ligament of carpus
What muscles encapsulate the shoulder scapular region?
Supraspinatus
Infraspinatus
Subscapularis
Supraspinatus m & fx?
Cranial Lateral scapula
P: Fills supraspinous fossa and scapular spine
D: Greater tubercle of humerus
Fx: Extend shoulder, stabilizer
Infraspinatus m & fx?
Caudal Lateral scapula
P: Fills infraspinous fossa
D: Lateral Greater tubercle of humerus
Fx: Flex shoulder, stabilizer
Subscapularis m. & fx?
Medial scapula
P: subscapular fossa
D: Lesser tubercle of humerus
Fx: Adduct and extend shoulder, stabilizer
Rhomboideus m. & fx?
Extrinsic- not apart of limb
P: dorsal median raphe
D: Dorsal scapula
Fx: Limb elevation, shrug
What are the heads of triceps brachii in dog & bovid?
Long
Accessory
Lateral
Medial
Accessory head of triceps brachii m.
P: Neck of humerus
D: Olecranon
Fx: Extend elbow
Long head of triceps brachii m.
P: Caudal scapula
D: olecranon
Fx: flex & extend elbow,
Lateral head of triceps brachii m.
P: Tricipital line of humerus
D: Olecranon
Fx: extend elbow
Medial head of triceps brachii m.
P: Lesser tubercule
D: Olecranon
fx: extend elbow
Biceps Brachii m.
P: Distal scapula
D: Proximal ulna and radius
Fx: flex elbow, extend shoulder
Triceps brachii whole muscle identification:
Cranial medial
D:All distally insert on the olecranon
Extensor carpi ulnaris m.
P: Lateral humeral epicondyle
D: Accessory carpal bone
Common digital extensor m.
P: Lateral humeral epicondyle
O: Dorsal phalanges II-V
Flexor carpi ulnaris m.
Two heads: ulnar head, humeral head
P: Medial elbow jt.
D: Accessory carpal bone
Superficial Digital Flexor m.
P: Medial humeral epicondyle
D: Palmar digits II-V
Deep digital flexor m.
P: Caudomedial elbow jt.
D: palmar digits I-V
Accessory carpal bone
Palpable landmark of carpus
Bony landmark of the shoulder
Greater tubercle of humerus
Where is the intertubercular groove
Equine: B/w lesser and greater tubercules
Deltoid tuberosity
Insertion point of deltoid
