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Anatomy Muscles Saddleback > Muscles Of Thorax - Back > Flashcards

Muscles Of Thorax - Back Flashcards

1
Q

Erector Spinae (spinalis, longissimus, iliocostalis)

A

A: prime movers of back extension

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2
Q

Teres major

A

O: inferior angle of scapula
I: Lesser tubercle of humerus
A: extends, adducts and medially rotates arm

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3
Q

Teres minor

A

O: lateral border of scapula
I: Greater tubercle of humerus
A: Laterally rotates humerus

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4
Q

Subscapularis

A

O: subscapular fossa of scapula
I: Lesser tubercle of humerus
A: medially rotates and stabilizes shoulder

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5
Q

Infraspinatus

A

O: Infraspinous fossa of scapula
I: Greater tubercle of humerus
A: rotates arm laterally

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6
Q

Supraspinatus

A

O: supraspinous fossa of scapula
I: Greater tubercle of scapula
A: abducts and stabilizes shoulder

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7
Q

Latissimus dorsi

A

O: lower 6 thoracic, all lumbar vertebrae and iliac crest
I: intertubercular groove of humerus
A: extends, adducts and medially rotates arm

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8
Q

Rhomboids major and minor

A

O: C7 to T5
I: medial border of scapula
A: Stabilizes scapula, retracts, and rotates downward

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9
Q

What muscles medially rotate the shoulder/ arm/ scapula/ humerus ?

A

Arm: pectoralis major, latissimus dorsi, teres major
Scapula: subscapularis

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10
Q

Muscles that retract scapula

A

trapezius, rhomboids,

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11
Q

What muscles laterally rotate the shoulder/ arm/ scapula/ humerus ?

A

Teres minor, infraspinatus

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12
Q

Trapezius

A

O: occipital bone, spine C7, and all thoracic
I: clavicle, acromion and spine of scapula
A: extends head, elevates, depresses, rotates, retracts scapula

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13
Q

Which muscles adduct arm?

A

Latissimus dorsi
Teres major
Pectoralis major

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14
Q

What muscle abducts arm?

A

Supraspinatus

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15
Q

Internal oblique, external oblique, & rectus abdomisis do what?

A

Flex and rotate trunk

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16
Q

What muscles flex the thigh?

A

Adductor longus
Pectineus
Adductor magnus
Iliopsoas

17
Q

Which muscles flex the leg?

A

Sartorius
Gastrocnemius
Gracilis

18
Q

What muscle medially rotates leg?

19
Q

What muscle laterally rotates thigh?

20
Q

Plantarflexes foot

A

Soleus
Peroneous longus
Gastrocnemius

21
Q

Medially rotates thigh

A

Pectineus
Adductor longus
Adductor magnus
Gluteus medius

22
Q

Dorsiflexes foot

A

Tibialis anterior

Extensor digitorum longus

23
Q

Extends thigh

A

Gluteus Maximus
Biceps femoris
Semitendinosus
Semimembrinosus

24
Q

Abducts thigh

A

Sartorius

Gluteus medius

25
Q

Adducts thigh

A

Pectineus
Adductor longus
Adductor magnus
Gracilis

Anatomy Muscles Saddleback (7 decks)

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