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a_anatomy > Lecture 4 - Muscles > Flashcards

Lecture 4 - Muscles Flashcards

1
Q

What is the origin of the omotransversarius?

A

Distal end of spine of scapula

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2
Q

What is the insertion of the omotransversarius?

A

Transverse wing of the atlas

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3
Q

What is the nerve of the omotransversarius?

A

Accessory n.

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4
Q

What is the action of the omotransversarius?

A

Advance limb or flex neck laterally

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5
Q

What is the origin of the trapezius?

A

Nuchal ligament, supraspinous ligament

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6
Q

What is the insertion of the trapezius?

A

Spine of scapula

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7
Q

What is the nerve of the trapezius?

A

Accessory n.

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8
Q

What is the action of the trapezius?

A

Elevate shoulder, abduct shoulder, draws limb forward, fixes shoulder

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9
Q

What is the origin of the Brachiocephalis?

A

clavical intersection

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10
Q

What is the insertion of the cleidobrachialis?

A

Distal end of cranial border of humerus

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11
Q

What is the insertion of the cleidocephalis?

A

Cranial 1/2 of mid-dorsal raphe and mastoid process

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12
Q

What is the nerve of the Brachiocephalis?

A

Accessory n.

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13
Q

What is the action of the Brachiocephalis?

A

Advance forelimb, extend shoulder joint, draw head and neck laterally

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14
Q

What are the two parts of the brachiocephalis?

A

cleidobrachialis and cleidocephalicus

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15
Q

What are the parts of the rhomboideus?

A

thoracis, cervicis, and capitis

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16
Q

What is the origin of the thoracis?

A

Spinous process of first 7 thoracic vertebrae

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17
Q

What is the origin of the cervicis?

A

Median raphe of neck

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18
Q

What is the origin of the capitis?

A

Occipital bone and nuchal ligament

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19
Q

What is the nerve of the rhomboideus?

A

Ventral rami of C and T spinal n.

20
Q

What is the insertion of the rhomboideus?

A

Dorsal border of scaplula

21
Q

What is the action of the rhomboideus?

A

Elevate thoracic limb and draw scapula against trunk

22
Q

What is the origin of the latissimus dorsi?

A

Thoracolumbar fascia

23
Q

What is the insertion of the latissimus dorsi?

A

Teres major tuberosity (of humerus)

24
Q

What is the nerve of the latissimus dorsi?

A

Thoracodorsal n.

25
Q

What is the action of the latissimus dorsi?

A

Draw free limb caudally, flex shoulder joint

26
Q

What is the origin of the superficial pectoral?

A

1st two sternebrae, fibrous raphe between adjacent muscles

27
Q

What is the insertion of the superficial pectoral?

A

whole crest of greater tubercle of humerus

28
Q

What is the nerve of the superficial pectoral?

A

Cranial pectoral n.

29
Q

What is the action of the superficial pectoral?

A

Adducts limbs, functions to prevent abduction of limb when bearing weight

30
Q

What is the origin of the deep pectoral?

A

Ventral part of the sternum

31
Q

What is the insertion of the deep pectoral?

A
  1. cranial part: lesser tubercle of humerus, w/ aponeurosis to greater tubercle
  2. caudal part: medial brachial fascia
32
Q

What is the nerve of the deep pectoral?

A

Caudal pectoral n.

33
Q

What is the action of the deep pectoral?

A

Adducts limb

34
Q

What is the action of the deep pectoral when limb is advanced and fixed?

A

pulls trunk cranially and extends shoulders

35
Q

What is the action of the deep pectoral when limb is not bear weight?

A

draws limb caudally and flexes shoulder

36
Q

What is the origin of the subclavius?

A

Cranial part of sternum

37
Q

What is the insertion of the subclavius?

A

Epimysium of supraspinatus m.

38
Q

What is the nerve of the subclavius?

A

Caudal/Cranial pectoral n.

39
Q

What is the action of the subclavius?

A

Acts w/ deep and superficial pectoral muscles

40
Q

What animal has a subclavius?

41
Q

What are the two regions of the serratus ventralis?

A

thoracis and cervicis

42
Q

What is the origin of the thoracis?

A

Transverse processes of last C3-C7 vertebrae

43
Q

What is the origin of the cervicis?

A

Ribs 2-7(8)

44
Q

What is the insertion of the serratus ventralis?

A

Facies serrata on dorsomedial 1/3 of scapula

45
Q

What is the nerve of the serratus ventralis?

A

Long thoracic nerve

46
Q

What is the action of the serratus ventralis?

A

Depress scapula and support trunk

a_anatomy (43 decks)

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