Thoracic Limb Flashcards
Identify the major bone in each topographic region
- Shoulder Region
- Brachial Region
- Antebrachial Region
- Carpal Region
- Metacarpal/cannon region
- Digital Region
- Scapula
- Humerus
- Radius and Ulna
- Carpal Bones
- Metacarpal 3 (and 2 and 4)
- Phalanges 1, 2, 3 and Proximal and Distal Sesamoid bones
Which skeletal structures are included in the manus?
Carpal bones, metacarpal bones, phalanges, and sesamoid bones
Which skeletal strucutres comprise the equine digit?
Proximal and distal sesamoid bones, phalanges 1, 2, and 3
Which structures are included in the thoracic girdle?
Scapula
Compare the spine of the scapula and scapular cartilage of the equine species with the canine species
equine scapula has cartilage? (anything else to add?)
Which is larger; lateral or medial epicondyle of the humerus?
Lateral Epicondyle
The lateral epicondyle is the origin for what muscle group?
Extensor muscles
The medial epicondyle is the origin for what muscle group?
Flexor muscles
What is the intermediate tubercle?
The ridge in the middle of the proximal end of the bone (inside intertubercular groove)
The capitulum and the troclea form what of the humerus?
The condyle
The olecranon tuberosity is located at what intercostal space?
5th IC
Which styloid process is the distal end of the ulna and which one is the distal end of the radius?
lateral- ulna
medial- radius
Which tendons are found in the grooves on the distal end of the radius?
lateral groove- common digital extensor (groove for cde)
middle groove- extensor carpi radialis (groove for ecr)
medial groove- extensor carpi obliquus (groove for eco)
What are the proximal carpal bones?
Radial Carpal
Intermediate Carpal
Ulnar Carpal
Accessory Carpal
What are the distal carpal bones?
Second Carpal
Third Carpal
Fourth Carpal
First carpal (variable and very small)
Where is the antebrachiocarpal joint located?
Between the radius and proximal carpal bones
Where is the Midcarpal joint?
Between the proximal and distal carpal joints
Where is the Carpometacarpal joint?
Between the distal carpal bones and Metacarpal III
Which synovial compartments of the carpus intercommunicate?
Midcarpal and Carpometacarpal joints
What is the carpal canal?
Passageway on the palmar side of the leg that connects the forearm with the distal end of the leg
Which structures form the boundaries of the carpal canal?
flexor retinaculum and carpal bones
Which major tendons pass through the carpal canal?
Deep Digital Flexor tendon, Superficial Digital Flexor tendon
What is the name of the tendon synovial sheath that passes through the carpal canal?
carpal synovial sheath
What are the anatomic and common names for the metacarpal bones?
Metacarpal Bone III- Cannon Bone
Metacarpal Bone II- Medial Splint Bone
Metacarpal Bone IV- Lateral Splint Bone
Where are the proximal and distal sesamoid bones located?
proximal- between cannon and P1
distal- between P2 and P3
Differentiate between phalanx and phalanges
phalanx-singular
phalanges-plural
What are the chestnut and ergot and where are they located?
chestnut-vestige of the carpal pad. located on the antebrachium
ergot- remnant of the metacarpal pad. located on proximal sesamoid bones
