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Shoulder Muscles
Origin, Insertion and actions of the shoulder muscles.
38
Anatomy
Professional
09/13/2009

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Cards

Term
What bursae are around the shoulder joint?
Definition
[image]
Term
What is the triangle of auscultation?
Definition
Where you hear lung sounds better.
Term
What are the boundaries of the triangle of auscultation?
Definition
Medial border of scapula
lateral border of trapezius
superior border latissimus dorsi
Floor- 7th rib, 6 and 7th intercostal spaces, rhomboid major
Term
What are the anterior boundaries of the axilla?
Definition
pectoralis major, pectoralis minor, clavipectoral fascia
Term
What are the posterior boundaries of the axilla?
Definition
subscapularis, teres major, latissimus dorsi
Term
What is the medial border of the axilla?
Definition
serratus anterior and upper 4 ribs
Term
What is the lateral border of the axilla?
Definition
intertubercular sulcus
Term
What is the ape of the axilla?
Definition
anteriorly- clavicle
posteriorly- scapula
Term
What is the base of the axilla?
Definition
concave floor of armpit
Term
What are the contents of the axilla?
Definition
axillary artery and vein
brachial plexus cords and branches
lymph nodes
fat and connective tissue
axillary tail of breasts
Term
The axillary artery is the continuation of what artery?
Definition
subclavian
Term
The sublcavian artery turns into the axillary beyond what?
Definition
the outer edge of the first rib.
Term
The axillary artery becomes the brachial artery at what point?
Definition
lower border of teres major.
Term
The brachial artery is divided by the teres ______ into 3 parts.
Definition
pec minor
Term
The first part of the division of the brachial artery has ____ artery. name it(them).
Definition
one artery, superior thoracic artery
Term
The second part of the brachial artery division has how many arteries? what are the names?
Definition
2- thoracoacromial and lateral thoracic arteries
Term
The third division of the brachial artery lies beyond that pec minor and has how many arteries?
Definition
3- subscapular, posterior and anterior circumflex humeral arteries.
Term
The brachial plexus is formed by the what ventral roots?
Definition
C5-T1
Term
The ventral root that form the brachial plexus pass through what two muscles of the neck?
Definition
scalenus anterior and medius muscle
Term
The roots that form the brachial plexus form three trunks that are found in the posterior neck triangle, what are they?
Definition
upper trunk (C5-C6)
Middle Trunk (C7)
Lower trunk (C8, T1)
Term
The three trunks that are formed from the ventral roots which form the brachial plexus are divided into two divisions. What are the divisions?
Definition
anterior and posterior
Term
The anterior and posterior divisions of the ventral roots join to form cords around what?
Definition
axillary artery
Term
From the cords come the main nerves of what?
Definition
brachial plexus
Term
the posterior cords come from what?
Definition
all the posterior divisions of ventral rami
Term
The lateral cords come from what divisions?
Definition
anterior and upper and middle trunks (C5-C7)
Term
the medial cords come from what divisions of ventral roots?
Definition
Lower trunk and anterior divisions (C8, T1)
Term
What are the main nerves of the brachial plexus formed from the roots?
Definition
dorsal scapular, long thoracic
Term
What are the main nerves of the brachial plexus formed from the trunk?
Definition
subclavius nerve, suprascapular nerve
Term
What are the main nerves of the brachial plexus formed from the lateral cord?
Definition
lateral pectoral nerve, musculocutaneous nerve (terminal), lateral root of median nerve (terminal)
Term
What are the main nerves of the brachial plexus formed by the medial cord?
Definition
medial pectoral nerve, medial cutaneous of arm, medial cutaneous of forearm, ulnar nerve (terminal), and medial root of median nerve (terminal)
Term
What are the main nerves of the brachial plexus formed by the posterior cord?
Definition
upper and lower subscapular nerves, thoracodorsal nerve, axillary (terminal) and radial nerve (terminal)
Term
What are the terminal nerves of the brachioplexus?
Definition
musculocutaneous, lateral and medial root of median nerve, ulnar, axillary, and radial nerves
Term
There are 20-30 axillary nodes that are divided into how many groups?
Definition
5
Term
The anterior axillary node group is located where?
Definition
under pectoralis major
Term
The posterior axillary node group is located where?
Definition
near subscapularis
Term
The lateral axillary node group is located where?
Definition
along axillary vein
Term
The central axillary node group is located where?
Definition
in the middle of the axilla
Term
The apical node group is located where?
Definition
just infraclavicular
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