Thoracic Limb

Question 1

What bone makes up the “shoulder”

Answer 1

Scapula b.

Question 2

What region does the humerus comprise?

Answer 2

Brachium

Question 3

What region do the radius and ulna comprise?

Answer 3

Antebrachium

Question 4

What bones are included in the carpus?

Answer 4

Carpal bones

Question 5

What bones are in the manus?

Answer 5

Carpals, metacarpals, digits.

Question 6

Where is the supraspinous fossa?

Answer 6

Cranial aspect to the spine of the scapula

Question 7

Where is the infraspinous fossa?

Answer 7

Caudal aspect to the spine of scapula

Question 8

Where is the acromion found? In what animals is it not present?

Answer 8

Enlarged Distal end of spine; not on the horse scapula

Question 9

What is the bony landmark of the elbow?

Answer 9

Olecranon of the Ulna

Question 10

What is the styloid process of the ulna?

Answer 10

Distal Tapering of ulna
Participates in antebrachiocarpal jt.
Attaches to short lateral collateral ligament of carpus

Question 11

What muscles encapsulate the shoulder scapular region?

Answer 11

Supraspinatus
Infraspinatus
Subscapularis

Question 12

Supraspinatus m & fx?

Answer 12

Cranial Lateral scapula
P: Fills supraspinous fossa and scapular spine
D: Greater tubercle of humerus

Fx: Extend shoulder, stabilizer

Question 13

Infraspinatus m & fx?

Answer 13

Caudal Lateral scapula
P: Fills infraspinous fossa
D: Lateral Greater tubercle of humerus

Fx: Flex shoulder, stabilizer

Question 14

Subscapularis m. & fx?

Answer 14

Medial scapula
P: subscapular fossa
D: Lesser tubercle of humerus

Fx: Adduct and extend shoulder, stabilizer

Question 15

Rhomboideus m. & fx?

Answer 15

Extrinsic- not apart of limb
P: dorsal median raphe
D: Dorsal scapula

Fx: Limb elevation, shrug

Question 16

What are the heads of triceps brachii in dog & bovid?

Answer 16

Long
Accessory
Lateral
Medial

Question 17

Accessory head of triceps brachii m.

Answer 17

P: Neck of humerus
D: Olecranon
Fx: Extend elbow

Question 18

Long head of triceps brachii m.

Answer 18

P: Caudal scapula
D: olecranon
Fx: flex & extend elbow,

Question 19

Lateral head of triceps brachii m.

Answer 19

P: Tricipital line of humerus
D: Olecranon
Fx: extend elbow

Question 20

Medial head of triceps brachii m.

Answer 20

P: Lesser tubercule
D: Olecranon
fx: extend elbow

Question 21

Biceps Brachii m.

Answer 21

P: Distal scapula
D: Proximal ulna and radius

Fx: flex elbow, extend shoulder

Question 22

Triceps brachii whole muscle identification:

Answer 22

Cranial medial
D:All distally insert on the olecranon

Question 23

Extensor carpi ulnaris m.

Answer 23

P: Lateral humeral epicondyle
D: Accessory carpal bone

Question 24

Common digital extensor m.

Answer 24

P: Lateral humeral epicondyle
O: Dorsal phalanges II-V

Question 25

Flexor carpi ulnaris m.

Answer 25

Two heads: ulnar head, humeral head P: Medial elbow jt. D: Accessory carpal bone

Question 26

Superficial Digital Flexor m.

Answer 26

P: Medial humeral epicondyle D: Palmar digits II-V

Question 27

Deep digital flexor m.

Answer 27

P: Caudomedial elbow jt. D: palmar digits I-V

Question 28

Accessory carpal bone

Answer 28

Palpable landmark of carpus

Question 29

Bony landmark of the shoulder

Answer 29

Greater tubercle of humerus

Question 30

Where is the intertubercular groove

Answer 30

Equine: B/w lesser and greater tubercules

Question 31

Deltoid tuberosity

Answer 31

Insertion point of deltoid