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Human Anatomy > Torso Muscles > Flashcards

Torso Muscles Flashcards

1
Q

Pectoralis Major

A

Muscles of the Anterior Thoracic Wall

Origin: Sternal end of the clavicle, sternum, ribs 1-6

Insertion: Tubercle of the humerus

Action: Flexes humerus at the shoulder, rotates humerus medially, adducts humerus

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2
Q

Pectoralis Major

A
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3
Q

Pectoralis Minor

A

Origin: ribs 3-5

Insertion: coracoid process of the scapula

Action: depresses scapula, rotates scapula downwards

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4
Q
A

Pectoralis Minor

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5
Q

Serratus Anterior

A

Origin- ribs 3-5

Insertion: Greater tubercle of the humerus

Action: rotates scapula upwards, protracts scapula

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6
Q
A

Serratus Anterior

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7
Q

External Intercostals

A

Origin: inferior border of ribs

Insertion: vertebral border of the scapula

Actions: elevates ribcage

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8
Q
A

External Intercostals

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9
Q

Internal Intercostals

A

Origin: Superior Border of the ribs

Insertion: inferior border of the ribs

Actions: depresses rib cage

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10
Q
A

Internal Intercostals

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11
Q

External Oblique

A

Origin: ribs 5-12

Insertion: linea alba, pubic crest of the pubis, pubic tubercle of the pubis, iliac crest of the ilium

Action: flexes and rotates vertebral column, compresses abdomen

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12
Q

Internal Oblique

A

Origin: lumber fascia, iliac crest of the ilium, inguinal ligament

Insertion: linea alba, pubic crest of the pubis, ribs 9-12

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13
Q
A

Internal Oblique

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14
Q

Iliacus

A

Origin: Iliac fossa of the ilium , ala of the sacrum

Insertion: lesser trochanter of the femur

Action: flexes thigh at hip, flexes trunk

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15
Q
A

Iliacus

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16
Q

Psoas Major

A

Origin:: transverse processes of the T12-L5

Insertion: lesser trochanter of the femur

Action: flexes thigh at hip, flexes trunk laterally

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17
Q
A

Psoas Major

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18
Q

Trapezius

A

Origin: Occipital bone, spinous processes of C7-T12

Insertion: lateral ⅓ of clavicle, spine of scapula, acromion process of the scapula

Action: Elevates scapula, depresses scapula, roates scapula, adducts scapula.

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19
Q
A

Trapezius

20
Q

Latissimus Dorsi

A

Origin: spinous processes of T7-T12, ribs 9-12, iliac crest of the ilium

Insertion: Intertubercular groove (sulcus) of the humerus

Action: extends Humerus at shoulder, adducts humerus, rotates humerus medially

21
Q
A

Latissimus Dorsi

22
Q

Levator Scapula (e)

A

Origin: transverse processes of C1-C4

Insertion: vertebral border of the scapula

Action: elevates scapula, downwardly rotates scapula

23
Q
A

Levator Scapula (e)

24
Q

Rhomboid Major

A

Origin: spinous processes of T2-T5

Insertion: vertebral border of the scapula

Action: adducts scapula, downwardly rotates scapula

25
Q
A

Rhomboid Major

26
Q

Rhomboid Minor

A

Origin: spinous process of C7-T1

Insertion: vertebral border of the scapula

Action: adducts scapula, downwardly rotates scapula

27
Q
A

Rhomboid Minor

28
Q

Supraspinatus

A

Origin: supraspinous fossa of the scapula

Insertion: greater tubercle of the humerus

Action: abducts the humerus

29
Q
A

Supraspinatus

30
Q

Infraspinatus

A

Origin: infraspinous fossa of the scapula

Insertion: greater tubercle of the humerus

Action: rotates humerus laterally

31
Q
A

Infraspinatus

32
Q

Teres Major

A

Origin: inferior angle of the scapula

Insertion: lesser tubercle of the humerus

Action: adducts humerus, extends humerus at shoulders, rotates humerus medially

33
Q
A

Tres Major

34
Q

Tres Minor

A

Origin: lateral border of the scapula

Insertion: greater tubercle of the humerus

Action: rotates humerus laterally

35
Q
A

Tres Minor

36
Q

Subscapularis

A

Origin: subscapular fossa of the scapula

Insertion: lesser tubercle of the humerus

Action: rotates humerus medially

37
Q
A

Subscapularis

38
Q

Splenius Capitis

A

Origin C6-C17

Insertion: mastoid process of the temporal bone, occipital bone

Action: Extends vertebral column

39
Q
A

Splenius Capitis

40
Q

Semispinalis Capitis

A

Origin: transverse processes of C7-T12

Insertion: occipital bone

Action: extends vertebral column.

41
Q

Erector Spinae Iliocostalis

A
42
Q

Erector Spinae Iliocostalis

A

Origin: Iliac crest of the ilium

Insertion: inferior border of the ribs

Action: extends vertebral column

43
Q

Longissimus

A
44
Q

Longissimus

A

Origin: C4-L5

Insertion: mastoid process of the temporal bone

Action: extends vertebral column

45
Q

Spinalis

A

Origin: spinous process of the T&-L3

Insertion: spinous process of C4-T6

Action: extends vertebral column

46
Q
A

Spinalis

Human Anatomy (8 decks)

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