Lecture 1

Question 3

What are the anatomical/laymen terms? Also, what kind of joints are these?

Answer 3

1. Metacarpophalangeal jt. aka Fetlock jt.
2. Proximal interphalangeal jt. aka Pastern jt.
3. Distal interphalangeal jt. aka Coffin jt.

Synovial & Hinge Joints! (Equids)

Question 4

Which type of locomotion is characterized by walking on the toes, with the heel elevated off the ground?

Answer 4

Car: Digitigrade

Question 5

Which type of locomotion is characterized by walking only on the distal phalanx, with the rest of the foot elevated off the ground?

Answer 5

Equids: Unguligrade

Question 6

What are the anatomical terms? What are their actions?

Answer 6

1. Antebrachiocarpal jt, Hinge jt (flexion/extension), in Canine/Feline & Biaxial jt (flexion/extenion & adduction/abduction) in Equid/Bovid.
2. Midcarpal jt, Hinge jt (flexion/extension)
3. Carpometacarpal jt, Plane or gliding; no movement

Question 7

What is the anatomical term for this joint? What is the action?

Answer 7

1. Distal radioulnar jt.

Question 8

What is the anatomical term for this joint? What is the action?

Answer 8

1. Proximal radioulnar jt.

Pivot jt. (pronation/supination)!

Question 9

What is this composite joint and what are the three anatomical names for these articulations joints? What are the actions?

Answer 9

1. Elbow jt.
2. Humeroulnar jt. (green)
3. Humeroradial jt. (orange)
4. Proximal radioulnar jt. (pink)

2 & 3 are hinge jts (flexion/ extension)!

Question 10

Name these anatomical structures.

Answer 10

1. Extensor retinaculum (blue)
2. Flexor retinaculum (green)
3. Both hold down carpal/digital extensor tendons

2 also forms the carpal canal!

Question 11

What is the anatomical name of this joint? What are the actions?

Answer 11

1. Scapulohumeral jt.
2. Flexion, extension, abduction, adduction, rotation of the shoulder

Question 12

What three muscles stabilize the shoulder joint?

Answer 12

Question 13

Answer 13

1. Supraspinous fossa
2. Infraspinous fossa
3. Subscapular fossa