Osteology/arthrology Thoracic Limb

Question 1

Bones in the antebrachium

Answer 1

Radius - lateral proximally, distally & crosses medically, weight bearing bone
Ulna - medial proximally, crosses laterally going distally, non weight bearing

Question 2

Bones in the shoulder region

Answer 2

Scapula, humerus

Question 3

Regions in the manus

Answer 3

Carpus
Metacarpus
Digits

Question 4

Carpus comprised of

Answer 4

2 rows of bones
Proximal row NAMED - accessory, ulnar carpal, intermediate carpal, radial carpal
Distal row NUMBERED - 1-4

Question 5

Anatomical name for shoulder joint

Answer 5

Scapulohumeral joint

Question 6

Anatomical name for elbow joint

Answer 6

Humero-radio-ulnar joint

Question 7

Anatomical name for wrist joint

Answer 7

Antebrachio- carpal- middle carpal - intercarpal - carpometacarpal joint

Question 8

Anatomical name for finger joint

Answer 8

Interphalangeal joint

Question 9

Elbow or ______ joint refers collectively to what ____ joints in

Answer 9

Cubital, 3
Humero- radial, humero- ulnar, radio-ulnar joints

Question 10

Carpal region refers to

Answer 10

Antebrachiocarpal joint - between antebrachium & proximal row of carpal bones
Middle carpal joint - between proximal & distal rows
Intercarpal joints - among individual carpal bones
Carpometacarpal joint - between distal row of carpal bone & metacarpal bone

Question 11

Digit joints

Answer 11

Metacarpophalangeal joint
Digit I (one interphalangeal joint)
Digits 2-5 (proximal interphalangeal, distal interphalangeal)

Question 12

Accessibility of carpal joints for fluid

Answer 12

Antebrachiocarpal/radiocarpal joint - opens widely
Middle carpal joint - also opens fully accessible
Carpometacarpal joint - not open widely but communicates w middle carpal joint

Question 13

Collateral ligament

Answer 13

In thoracic limb, medial & lateral
Longitudinal bundles of cola genus fibers in superficial layer of joint capsule passing from bone proximal to the joint to the bone distal to it
Prevents medial to lateral movement
Can rupture easily !!!

Question 14

Where in the thoracic limb would you not find collateral ligaments?

Answer 14

Shoulder joint

Question 15

Medial collateral ligament

Answer 15

Connects humerus and radius

Question 16

Lateral collateral ligament

Answer 16

Connects humerus and ulna
Crosses the annular ligament

Question 17

Lateral collateral ligament

Answer 17

Connects ulnar and carpal bones laterally

Question 18

Collateral ligament of metacarpophalangeal joint

Answer 18

Connects metacarpal and p1 laterally

Question 19

Collateral ligament of proximal interphalangeal joint

Answer 19

Connects p1 and p2 proximally

Question 20

Collateral ligament of distal interphalangeal joint

Answer 20

Connects p2 and p3

Question 21

Lateral and medial glenohumeral ligaments

Answer 21

Main ligaments in shoulder, not robust, shoulder relies on muscle for majority of stabilization

Question 22

Annular ligament of elbow

Answer 22

Supports rotary action of radial head against radial notch of the ulna