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Anatomy Quarter 2- 2023 > Lecture 12: Antebrachium and Carpus > Flashcards

Lecture 12: Antebrachium and Carpus Flashcards

1
Q

The antebrachium is the portion of the thoracic limb between the

A

Elbow and carpus

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2
Q

Carpus includes bones of the ____

A

Wrist

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3
Q

Manus includes the _____

A

Metacarpals and phalanges

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4
Q

Movement of the forearm is achieved via muscles that move the ___

A

Elbow joint

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5
Q

What are the bones of the antebrachium

A

Radius, ulna carpals

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6
Q

The antebrachial muscles primarily act on ____

A

Carpus and digits

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7
Q

What artery innervates the caudal compartment of the antebrachium

A

Median, ulnar, radial

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8
Q

What nerve innervates the caudal compartment of the antebrachium

A

Median, ulnar

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9
Q

What

A
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10
Q

what Is the main action of the caudal compartment of the antebrachium

A

Flexion and pronation of carpus and digits

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11
Q

What artery supplies the cranio-lateral compartment of antebrachium

A

Superficial brachial artery

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12
Q

What nerve innervates cranio-lateral compartment of antebrachium

A

Radial

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13
Q

What is the main action of cranio-lateral compartment of the antebrachium

A

Extension and supination

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14
Q

Order of osteology of carpus and manus

A

Accessory bone, ulnar carpal, intermedioradal carpal, carpals 1-4, metacarpals 1-5, phalanges (proximal, intermediate distal)

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15
Q

Where is the dorsal sesamoid bone in the manus

A

Between metacarpals and phalanges

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16
Q

Where is proximal sesamoid bone in the manus

A

Above proximal phalanx I

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17
Q

Which animal has a fused radius and ulna

A

Horses

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18
Q

What bones are in the proximal row of carpus

A

Radial carpal, intermediate carpal, ulnar carpal, accessory bone

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19
Q

Which animal has a fused radial and intermediate carpal bones

A

dogs

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20
Q

What are the bones in the distal row of carpus

A

Carpals 1-4

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21
Q

Which animal has a fused 2+3 carpals

A

Ruminants

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22
Q

What are the joints of the wrist

A

Distal radioulnar, antebrachiocarpal, midcarpal, carpal metacarpal

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23
Q

Ginglymus

A

Hinge with some lateral movement
Present in carpal joint (besides ungulates)

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24
Q

Degree of Movement of antebrachiocarpal joint

A

Very mobile

25
Q

Degree of movement of midcarpal

A

Somewhat mobile

26
Q

Degree of movement of carpal metacarpal joint

A

Somewhat mobile

27
Q

Oblique movement in ruminants is ____

A

Limited

28
Q

Degree of movement in antebrachiocarpal joint in ungulates

A

Very mobile

29
Q

Degree of movement in midcarpal joint of ungulates

A

Somewhat mobile

30
Q

Degree of movement in carpal metacarpal joint of ungulates

A

No movement

31
Q

Medial and collateral ligaments of the wrist

A

Well developed in ungulates, weaker in carnivores, permit some abduction and adduction

32
Q

Deep palmar ligament

A

Covers entire palmar surface of skeleton, hides unevenness of bones

33
Q

Superficial, transverse ligament

A

Passes obliquely to accessory carpal bone to medial aspect of carpal

Completes the enclosure of carpal canal/tunnel

34
Q

What is the carpal Canal/tunnel

A

Conveys are flexor tendons to manus from antebrachium

35
Q

Distal ligament of accessory bone

A

Join bone of carpals to metacarpals, prevent overextension

36
Q

High risk injury risk

A

Permanently pronated antebrachium create a valgus-outwardly angled elbow joint therefore high rise injuries can cause lateral condyle fractures of humerus and/or hyperextension of carpal and palmar ligaments

37
Q

Muscles that are developmental dorsal will be ____ in brachium and ____ in antebrachium

A

Caudal, cranial

38
Q

Muscles that are developmentally ventral will be ___ in brachium and ___ in antebrachium

A

Cranial, caudal

39
Q

What muscles are in the craniolateral compartment of antibrachium

A

Brachioradialis, extensor carpi radialis, extensor digitorum communis, extensor digitorum lateralis, ulnaris lateralis, abductor digit I longus, extensor digit I et II

40
Q

Where do all craniolateral muscles of antebrachium originate

A

lateral epicondyle of humerus

41
Q

Brachioradialis OINA

A

O: lateral epicondyle of the humerus
I: distal 3rd of radius
N: radial
A: extension and supination

42
Q

Extensor carpi radialis OINA

A

O: lateral epicondyle of femur
I: metacarpals 2+3
N: radial
A: extension and supination

43
Q

Extensor digitorum communis

A

O: lateral epicondyle of humerus
I: phalanxes 2-5
N: radial
A: extension and supination

44
Q

Extens

A
45
Q

Ulnaris lateralis OINA

A

O: lateral epicondyle of humerus
I: metacarpal 5
N: radial
A: extension and supination

46
Q

Abductor digit longus OINA

A

O: lateral epicondyle of humerus
I: metacarpal I near sesamoid
N: radial
A: extension and supination

47
Q

Supination OINA

A

O: lateral epicondyle of humerus
I: radius
N: radial
A: extension and supination

48
Q

Where do muscles of caudal of the antebrachium originate

A

Medial epicondyle of humerus

49
Q

OINA for pronator teres

A

O: medial epicondyle of humerus
I: radius
N: median
A: Flexion and pronation

50
Q

OINA for pronator quadratus

A

O: medial epicondyle of humerus
I: radius
N: median
A: Flexion and pronation

51
Q

OINA for flexor carpi radialis

A

O: medial epicondyle of humerus
I: palmar side of M2+3
N: median
A: Flexion and pronation

52
Q

OINA for flexor carpi ulnaris

A

O: medial epicondyle of humerus
I: accessory bone
N: ulnar
A: Flexion and pronation

53
Q

OINA for flexor digitorum superficialis

A

O: medial epicondyle of humerus
I: metacarpals 2-5
N: median
A: Flexion and pronation

54
Q

OINA for flexor digitorum profundus

A

O: medial epicondyle of humerus
I: phalanges 2-5
N: ulnar and median
A: Flexion and pronation

55
Q

What is the function of retinacula

A

Functions like a pulley to distribute muscle forces
Enclose tendons and keep them close to bone

Maintain ligaments in position to prevent injury and generate force

56
Q

Extensor carpi obliquus

A

Abductor digits I longus (horse, equivalent to abductor digit I longus in dog)
Inserts: on medial splint bone

57
Q

What muscle does cephalic vein lie on`

A

Extensor carpi radialis

58
Q

What vein is connected to cephalic

A

Median cubital

59
Q

Carpal tunnel will lead to inflammation and compression of what nerve

A

Median

Anatomy Quarter 2- 2023 (39 decks)

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