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Anatomy > Musculoskeletal System: Cat Differences > Flashcards

Musculoskeletal System: Cat Differences Flashcards

1
Q

Clavicle

A

independent vestigial bone

palpable w/in Brachiocephalicus muscle

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2
Q

Scapula

A

cranial angle more curvved
scapular spine has a tuberosity
acromion process divided into hamate process & suprahamate process
corocoid process is well-developed & overhands glenoid cavity

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3
Q

Humerus

A

lateral tubercle of humerus has a fossa for the hamate process of scapula
supra-condylar foramen through which an artery & nerve pass
lateral epicondyle is rounded caudally & smaller
medial epicondyle is rounded caudally & ends abruptly
condyle is distinctively divided into medial trochlea & lateral capitulum
coronoid fossa in medial to radial fossa to accomoadate the medial coronoid process of the ulna

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4
Q

Radius & ulna

A

olecranon appears rectangular
body of ulna is convex along caudal border
wider space b/w bones (especially at distal end)

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5
Q

Wider space b/w radius & ulna for

A

pronounced supination & pronation

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6
Q

Manus

A

long bones relatively straighter
bone angles more acute
carpal organ
accessory carpal bone less elongated

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7
Q

What is the carpal organ

A

specialized cutanous body overlying the accessory bone

studded w/ sensory hairs like whiskers & whole pad resembles a nodule

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8
Q

Cleidobrachialis

A

extends farther down the humerus to insert on the ulna b/w the Biceps brachii & Brachialis muscles

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9
Q

Functional relevance of different attachments for Cleidobrachialis in cats

A

can flex the elbow

good for crouching & hunting

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10
Q

Trapezius thoracis

A

more developed in cats

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11
Q

Long Head of Triceps

A

covered by Tensor fascia antebrachia

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12
Q

Anconeus

A

better developed in cats

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13
Q

Brachialis

A

inserts only on the ulna

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14
Q

Biceps brachii

A

inserts only on the radius

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15
Q

Brachialis & biceps brachii are useful for what

A

pronation & supination

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16
Q

Brachioradialis

A

well developed in cats for supination

forms a rdige along the course of the cephalic vein

17
Q

Pronator quadratus

A

larger gap b/w radius & ulna, so this muscle is larger

18
Q

Advantage of larger Pronator quadratus

A

manipulation

19
Q

Supinator

A

well developed in cat

rotation occurs in antebrachium, so paw also rotates

20
Q

Advantage of Supinator

A

defense & offense

21
Q

Extensor carpii radialis

A

tendons insert onto metacarpal tuberosity of II III IV metacarpal bones on cat

22
Q

Additional attachments of extensor carpii radialis do what

A

allow for better paw movement

23
Q

Lateral digital extensor

A

insertion occurs on extensor process of middle phalanx for all functional digits

24
Q

Usefulness of small flexor, adductor, & abductor muscles of manus being better developed

A

diffusion of concussion when cats jump from a height

25
Q

Deep digital flexor

A

protrude claws when climbing a tree or catching prey
contractile muscular power is greater than the elastic power of ligaments
radial & ulnar heads better developed

26
Q

Why are radial & ulnar head of Deep Digital Flexor more developed in cats

A

flexion of distal interphalangeal joints to facilitate efficient claw protrusion

27
Q

Dorsal elastic ligament

A

retractable claws
attaches b/w phalanx II & III
retracted claw brings III phalanx to lie to the side of the II phalanx

28
Q

Pubis bone

A

wings of ilium are parallel

29
Q

Femur

A

shaft is straighter than in dogs

30
Q

Tibia, fibula, & bones of pes

A

retractable claws, otherwise similar

31
Q

Cranial crural abductor or abductor crura cranialis

A

cranial part arises from the 2nd to 4th caudal vertebrae & merges w/ the aponeurosis of the tensor fasciae lata

32
Q

Sartorius

A

undivided- no cranial & caudal parts

33
Q

Sacrotuberous ligament

A

not in cats

34
Q

Soleus muscle

A

well developed
lies lateral to Lateral Head of Gastrocnemius
contributes to the formation of the common calcanean tendon
arises from proximal part of the fibula

35
Q

Tibal & Fibular heads of DDF

A

well developed

claw protrusion

36
Q

Small muscles of pes

A

better developed

Anatomy (5 decks)

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