The Appendicular Skeleton Ch 3 Flashcards
The appendicular Skeleton
Composed of the bones of the limbs
Scapula (shoulder blade)
A large triangular bone on the side of the thorax
Clavicle (collar bone)
A slender bone that connects the sternum to the scapula
Vestigial or Rudimentary Clavicle
Degenerate, atrophied or undeveloped collar bone
What species don’t have clavicles?
swine, ruminants and equine
Humerus (Brachium)
The long bone of the proximal front limb
Antebrachium
The region of the radius and the ulna
Ante
Before
Radius
The cranial bone of the front limb
Ulna
The caudal bone of the front limb
Olecranon
The proximal projection of the ulna that forms the point of the elbow (some species have a fused radius and ulna
Carpal Bones
Irregularly shaped bones in the area known as the wrist in people
Carpus
The joint in the area known as the wrist in people (in small animals)
Knee
The joint in the area known as the wrist in people (in large animals)
Metacarpals
Bones found distal to the carpus (Identified by numbers from medial to lateral)
Meta
beyond
Splint bones
When metacarpals (and metatarsals) II and IV do not articulate (connect) with the phalanges (in horses)
Interosseous Ligament
The ligament that attaches the splint bones to the large third metacarpal (or metatarsal) bone (the cannon bone)
Cannon Bone
The large third metacarpal (or metatarsal) bone
Ruminant
An animal (such as a cow or sheep) that has more than one stomach and that swallows food and then brings it back up again to continue chewing it
Phalanges
The bones of the digit (numbered from proximal to distal). Plural form of phalanx
Phalanx
One bone of the digit (Digit 1)
Digits
The bones analogous (related or similar) to the human finger and vary in number in animals. Cloven-hoofed animals, such as ruminants or swine, have 3 phalanges in their digits with the distal-most (p3) encased in the hoof. Equine species have one digit (digit III). Within that digit are 3 phalanges.
Dewclaw
Digit 1 of the dog
Ungulates (uhng-yoo-latz)
Animals with hooves