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Gross Anatomy > Pectoral Region. > Flashcards

Pectoral Region. Flashcards

1
Q

Pectoralis Major (Origin)

A 
1 Clavicle (clavicular portion) 
2 Sternum and Upper Ribs ( Sternal-Costal Portion) (3) 
Tendon of the External Oblique muscle ( abddominal Portion)
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2
Q

Pectoralis Major ( insertion)

A

Greater Tubercle
Inter-Tubercular
Groove/ Humerus.

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3
Q

Pectoralis Major(Action)

A

(1) Adduction and medial rotation of humerus (against Resistance)
(2) Forces inspiration by elevating the rib cage when the humerus is fixed; Clavicular Portion: Lexus humerus @ shoulder joint
(3) Sternocostal Portion: Extends humerus @ shoulder joint (when humerus is in a flexed position.

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4
Q

Pectoralis Major ( nerve Supply)

A

(1) Medial Pectoral Nerve
And
(2) Lateral Pectoral Nerve.

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5
Q

Pectoralis Minor (origin)

A

Ribs 3-5

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6
Q

Pectoralis Minor (insertion)

A

Coracoid Process/ Scapula

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7
Q

Pectoralis Minor (action)

A

(1) Involved w/ protraction/ Abduction of the scapula

(2) Elevates ribcage and thus involved w/ forced inspiration.

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8
Q

Pectoralis Minor

( Nerve supply)

A

Medial Pectoral Nerve.

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9
Q

(1) Medial Pectoral Nerve
And
(2) Lateral Pectoral Nerve.

A

Pectoralis Major ( nerve Supply)

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10
Q

Origin: 1 Clavicle (clavicular portion)
2 Sternum and Upper Ribs ( Sternal-Costal Portion) (3)
Tendon of the External Oblique muscle (abddominal Portion)

A

Pectoralis Major (Origin)

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11
Q

Insertion: Greater Tubercle
Inter-Tubercular
Groove/ Humerus.

A

Pectoralis Major

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12
Q

(1) Adduction and medial rotation of humerus (against Resistance)
(2) Forces inspiration by elevating the rib cage when the humerus is fixed; Clavicular Portion: Lexus humerus @ shoulder joint
(3) Sternocostal Portion: Extends humerus @ shoulder joint (when humerus is in a flexed position

A

Pectoralis Major(Action)

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13
Q

Origin: Ribs 3-5

A

Pectoralis Minor (origin)

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14
Q

Insertion: Coracoid Process/ Scapula

A

Pectoralis Minor (insertion)

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15
Q

Nerve Supply : Medial Pectoral Nerve.

A

Pectoralis Minor

( Nerve supply)

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16
Q

Action: (1) Involved w/ protraction/ Abduction of the scapula
(2) Elevates ribcage and thus involved w/ forced inspiration.

A

Pectoralis Minor (action)

17
Q

Subclavius ( origin)

A

First Rib

18
Q

Subclavius (Insertion)

A

Subclavian Groove/ Clavicle

19
Q

Subclavius (action)

A

(1) Moves clavicle medially

(2) Acts as a protective cushion between clavicle and subclavian vessels.

20
Q

Subclavius (Nerve Supply)

A

(1) Nerve to the subclavius.

21
Q

Origin: First Rib

A

Subclavius ( origin)

22
Q

Insertion: Subclavian Groove/ Clavicle

A

Subclavius (Insertion)

23
Q

Action: (1)Moves clavicle medially

(2) Acts as a protective cushion between clavicle and subclavian vessels.

A

Subclavius (action)

24
Q

Nerve Supply: (1) Nerve to the subclavius

A

Subclavius (Nerve Supply)

Gross Anatomy (14 decks)

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