Lecture 13- Carnivoran Manus and Forepaw

Question 1

Movement of forepaw and digits is achieved via muscles of the ____

Answer 1

Antebrachium

Question 2

Unguicular process location

Answer 2

Bony process right above nail

Question 3

Is digital pad in dog thick or thin

Answer 3

Thick

Question 4

Is digital pad in cat thick or thin

Answer 4

Thin

Question 5

Epidermis in digital pad of dog

Answer 5

Heavily keratinized

Question 6

___project into epidermis of dog digital pad

Answer 6

Dermal papillae

Question 7

Hypodermis of digital pad of dog

Answer 7

Loose CT with sweat glands

Question 8

Epidermis of digital pad of cat

Answer 8

Stratified squamous keratinized epithelium

Question 9

Dermis of digital pad of cat

Answer 9

Connective tissue

Question 10

Hypodermis of digital pad of cat

Answer 10

Loose CT with adipose tissue and sweat glands

Question 11

Annular ligaments

Answer 11

Protect the sheath covering long tendons of digital flexors and prevent tendons from bowing when forepaw is flexed

Question 12

Four interosseous muscles of manus

Answer 12

Run from metacarpal to base of proximal phalanx

Question 13

What do interosseous muscles lie deep to

Answer 13

Flexor digitorum profundus

Question 14

What do the four interosseous muscles do

Answer 14

Flex MCP joint and extend interphalangeal joint- allow dogs to stand without exerting lots of force via extensors

Question 15

What nerve innervates the muscles of digit V, lumbricals, interosseous

Answer 15

Ulnar

Question 16

What nerve innervates muscles moving digit 1

Answer 16

Median

Question 17

What are the important ligaments of manus

Answer 17

Dorsal elastic ligaments, collateral PIP ligaments, lateral collateral MCP, lateral sesamoidean ligament

Question 18

Dorsal elastic ligaments origin and insertion

Answer 18

Extend from proximal end of middle phalanges to unguicular crest of distal phalanges

Question 19

What is the function of the dorsal elastic ligaments

Answer 19

Keep claws elevated

Question 20

What muscle protrudes the claws

Answer 20

Flexor digitorum profundus

Question 21

What are the two dorsal elastic ligaments in cats

Answer 21

Medial and lateral

Question 22

Medial dorsal elastic ligament

Answer 22

Longer, extend from proximal interphalangeal joints to sides of distal phalanx

Question 23

Lateral dorsal elastic ligament

Answer 23

Shorter, extends from distal end of middle phalanx to top of unguicular crest

Question 24

Distal phalanx is oriented ___ to middle phalanx

Answer 24

Obliquely

Question 25

Onychetomy/declawing

Answer 25

Be sure to remove distal phalanx, disarticulate distal interphalangeal joint

Question 26

What are the two main blood supplies of manus

Answer 26

Superficial palmar arch and deep palmar arch

Question 27

Is superficial or deep palmar arch more proximal

Answer 27

Deep palmar arch

Question 28

Median nerve cutaneous innervation of paw

Answer 28

Majority of palmar side of paw