Lecture 13- Carnivoran Manus and Forepaw Flashcards
Movement of forepaw and digits is achieved via muscles of the ____
Antebrachium
Unguicular process location
Bony process right above nail
Is digital pad in dog thick or thin
Thick
Is digital pad in cat thick or thin
Thin
Epidermis in digital pad of dog
Heavily keratinized
___project into epidermis of dog digital pad
Dermal papillae
Hypodermis of digital pad of dog
Loose CT with sweat glands
Epidermis of digital pad of cat
Stratified squamous keratinized epithelium
Dermis of digital pad of cat
Connective tissue
Hypodermis of digital pad of cat
Loose CT with adipose tissue and sweat glands
Annular ligaments
Protect the sheath covering long tendons of digital flexors and prevent tendons from bowing when forepaw is flexed
Four interosseous muscles of manus
Run from metacarpal to base of proximal phalanx
What do interosseous muscles lie deep to
Flexor digitorum profundus
What do the four interosseous muscles do
Flex MCP joint and extend interphalangeal joint- allow dogs to stand without exerting lots of force via extensors
What nerve innervates the muscles of digit V, lumbricals, interosseous
Ulnar
What nerve innervates muscles moving digit 1
Median
What are the important ligaments of manus
Dorsal elastic ligaments, collateral PIP ligaments, lateral collateral MCP, lateral sesamoidean ligament
Dorsal elastic ligaments origin and insertion
Extend from proximal end of middle phalanges to unguicular crest of distal phalanges
What is the function of the dorsal elastic ligaments
Keep claws elevated
What muscle protrudes the claws
Flexor digitorum profundus
What are the two dorsal elastic ligaments in cats
Medial and lateral
Medial dorsal elastic ligament
Longer, extend from proximal interphalangeal joints to sides of distal phalanx
Lateral dorsal elastic ligament
Shorter, extends from distal end of middle phalanx to top of unguicular crest
Distal phalanx is oriented ___ to middle phalanx
Obliquely
