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MSK A > Upper Limb Muscles > Flashcards

Upper Limb Muscles Flashcards

1
Q

What is the origin of the coracobrachialis?

A

Coracoid process of scapula

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2
Q

What is the insertion of the coracobrachialis muscle?

A

Upper one third of the frontal humerus

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3
Q

What is the action of the coracobrachialis muscle?

A

Flexes and addicts the arm at the shoulder

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4
Q

What innervates the corocobrachialis muscle?

A

Musculocutaneous nerve

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5
Q

What is the origin of the deltoid muscle?

A

Lateral third of clavicle, surface of acromion and spine of scapula

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6
Q

What is the insertion of the deltoid muscle?

A

Deltoid tuberosity of the humerus

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7
Q

What is the innervation of the deltoid muscle?

A

Axillary nerve

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8
Q

What is the action of the deltoid tuberosity?

A

Abduction, flexion, internal rotation/external rotation

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9
Q

What is the origin of the pectoralis major muscle?

A

Medial half of the clavicle, manubrium, upper half of sternum and aponeurosis of the external abdominal oblique muscle

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10
Q

What is the insertion of the pectoralis major muscle?

A

Crest of the greater tubercle of the humerus

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11
Q

What is the innervation of the pactoralis major muscle?

A

Medial and lateral pectoral nerves

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12
Q

What is the primary action of the pectoralis major muscle?

A

Abduction of the arm at the shoulder

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13
Q

What is the origin of the petoralis minor muscle?

A

3rd to 5th ribs

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14
Q

What is the insertion of the pectoralis minor muscle?

A

Coracoid process of the scapula

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15
Q

What is the innervation of the pectoralis minor muscle?

A

Medial and lateral pectoral nerves

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16
Q

What are the actions of the pectoralis minor muscle?

A

Pulls the scapula medially, forwards and downwards. Aids in respiration

17
Q

What is the origin of the serratus anterior muscle?

A

Superior - 1st and 2nd ribs
Intermediate - 2nd and 3rd ribs
Inferior - 4th and 9th ribs

18
Q

What is the insertion of the serratus anterior muscle?

A

Medial margin of the costal surface of the scapula

19
Q

What is the innervation of the serratus anterior muscle?

A

Long thoracic nerve and the brachial plexus

MSK A (10 decks)

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