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Anatomy II > Lecture 13: Carnivoran Manus and Forepaw > Flashcards

Lecture 13: Carnivoran Manus and Forepaw Flashcards

1
Q

main axis of manus passes through which digit: dog vs horse vs cow

A

3rd
3rd
between 3rd and 4th

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2
Q

unguicular process

A

most distal portion of phalange
what ungulates stand on
covered in claws in other animals

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3
Q

foot pads and claws are adaptations of

A

integument

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4
Q

3 foot pads

A

carpal
metacarpal
digital

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5
Q

digital pad in dogs: features

A

thick
epidermis highly keratinized
dermal papilla project into epidermis

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5
Q

digital pad in dogs: features

A

thick
epidermis highly keratinized
dermal papilla project into epidermis

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6
Q

digital pads in cats: features

A

thin
stratified squamous keratinized epithelium
dermis and hypodermis
adipose tissue

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7
Q

long tendons of digital flexors travel within

A

synovial sheath

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8
Q

function of annular ligaments in manus

A

protect sheath
prevent tendons from bowing when forepaw is flexed (maximize movement)

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9
Q

4 interosseus muscles: definition, location, functions

A

numbered 1,2,3,4
from metacarpal to base of proximal phalanx
deep to flexor digitorum profundus
flex metacarpal phalangeal joint + maintain joint angle when dog bears weight on paw

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10
Q

the muscles that move digit 1 are innervated by what nerve

A

median nerve

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11
Q

muscles of digit 5 and interosseus muscles are innervated by

A

ulnar nerve

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12
Q

ligaments of manus

A

collateral ligaments at every joint (PIP, MCP, DIP)
dorsal elastic ligament
lateral sesamoidean ligament

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13
Q

dorsal elastic ligament function

A

keep claws elevated to prevent claws getting caught in stuff

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14
Q

protracting claws due to contraction of

A

flexor digitorum profundus

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15
Q

dorsal elastic ligaments in dogs vs cats

A

dogs: same length
cats: different lengths

16
Q

2 types of dorsal elastic ligaments

A

medial
lateral

17
Q

medial vs lateral dorsal elastic ligaments: cats

A

medial = longer

18
Q

how is the distal phalanx oriented in relation to middle phalanx: cats

A

obliquely/sideways

19
Q

what traits allow cat to retract claws

A

different lengths of dorsal elastic ligaments
distal phalanx oriented sideways

20
Q

2 phalanges of 1st digit

A

proximal
distal

21
Q

onychectomy: definition, process

A

declawing –> amputation of distal phalanx and claw
remove nail bed, remove distal phalanx, disarticulate distal interphalangeal joint

22
Q

blood supply of manus: superficial and deep

A

radial and ulnar arteries anastamose to form superficial and deep palmar arches

23
Q

majority of paw gets cutaneous innervation from

A

median nerve

Anatomy II (36 decks)

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