Dissection 2 Flashcards

1
Q

Forms the anterior wall of the axilla and its lower border is contained in the inferior edge of the anterior axillary fold

A

Pectoralis mjor

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2
Q

Main muscles of climbing

A

Pectoralis major and latissimus dorsi

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3
Q

Important accessory muscle of inspiration

A

Pec major

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4
Q

Main muscle of posterior wall of axilla and its lateral border is contained in the inferior edge of the posterior axillary fold

A
Latissimus dorsi
(teres major also contributes to the posterior wall of the axilla; its inferior border corresponds to the inferior extent of the axilla)
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5
Q

How does the subclavian vein reach the root of the neck from the axilla?

A

Over the first rib and under the clavicle

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6
Q

Where does the subclavian drain into the internal jugular vein?

A

Posterior to the sternoclavicular joint

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7
Q

When does the subclavian vein become the axillary vein?

A

At the lateral border of the first rib

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8
Q

When is the axillary vein renamed the brachial vein?

A

At the lower border of teres major

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9
Q

Where can you palpate pulsations of the subclavian artery?

A

Where the artery crosses the first rib

remember the subclavian artery becomes the axillary artery at the lateral border of the first rib

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10
Q

How can you locate the medial, lateral and posterior cords of the brachial plexus?

A

They are around the axillary artery!

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11
Q

Superior trunk

A

Combined anterior rami of C5 and C6

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12
Q

Middle trunk

A

Anterior ramus of C7

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13
Q

Inferior trunk

A

Combined anterior rami of C8 and T1

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14
Q

Ulnar nerve comes from which cord

A

Medial cord

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15
Q

Musculocutaneous nerve comes from which cord?

A

Lateral cord

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16
Q

Posterior cord divides into which nerves?

A

Axillary and radial

17
Q

Medial and lateral cords both contribute the formation of which nerve?

A

Median

18
Q

Where would you find the roots and the trunks?

A

These lie mainly between the anterior and middle scalene muscles in the root of the neck

19
Q

Where would you find the divisions?

A

These lie immediately posterior to the subclavian vessels in the root of the neck (deep to the clavicle)

20
Q

Where do the cords lie?

A

These lie around the axillary artery, which is distal to the first rib

21
Q

Where can you see the musculocutaneous nerve emerging?

A

Emerges from the corachobrachialis

22
Q

Nerve supply to corachobrachialis

A

Musculocutaneous nerve

23
Q

Nerve supply to the biceps brachii

A

Musculocutaneous nerve

24
Q

Nerve supply to the brachialis muscle

A

Musculocutaneous nerve

25
Q

Lies superior to the radial nerve and wraps around the posterior aspect of the surgical neck of the humerus

A

Axillary nerve

26
Q

Nerve which may be damaged in mid-shaft humeral fracture

A

Axillary nerve

27
Q

How could you locate median artery really easily?

A

It forms the middle of the “M shape”

28
Q

How could you locate median nerve really easily?

A

It forms the middle of the “M shape”