Exam 5 Upper Extremity 51X Flashcards
Name the muscles that are Scapulohumeral Muscles, the intrinsic shoulder muscles?
Deltoid Supraspinatus Infraspinatus Teres Minor Teres Major Subscapularis
Which Scapulohumeral muscle is a multipennate muscle?
Deltoid Muscle
What are the names of the four muscles that make up the rotator cuff (Their tendons form a single tendon unit to form a “cuff” over the head of the Humerus)?
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis
What are the functions of the rotator cuff?
- Help lift and rotate arm
- Stabilize Humeral head within glenoid cavity
Which of the Rotator cuff muscles are not a rotator?
Supraspinatus
What does the Coracoacromial ligament, ligament that connects to the Acromion and Coracoid process, prevent from happening?
Superior displacement of Humeral head from glenoid cavity
What separates the tendon from the coracoacromial ligament, acromion, and deltoid muscle?
Subacromial bursa
A patient who has painful abduction of the arm during the arc of 50-130 degrees may be suffering from what?
Subacromial bursitis
-Painful arc syndrome
What provides a passageway for vessels and nerves to reach the upper extremities from the trunk?
Axilla
What the is pyramidal space that lies inferior to the glenohumeral joint and superior to the axillary fascia at the junction of the arm and thorax called?
Axilla
The axilla has an apex, base, and four walls, what does the apex of the axilla allow?
Cervicoaxillary canal: between first rib, clavicle, and superior edge of subsacapularis allows passage of arteries, veins, lymphatics, and nerves to reach the arm
What artery begins at the lateral border of the 1st rib and is a continuation of the subclavian artery?
Axillary Artery
What will the Axillary become when it passes the inferior border of the teres major?
Brachial Artery
The axillary artery, axillary vein, and cords and branches of the brachial plexus associate proximally within a fascial sleeve called?
Axillary Sheath
What divides the Axillary artery into its 3 parts?
Tendon of Pectoralis minor
What is the name of the arterial branch that arises from the 1st part of the axillary artery?
Superior Thoracic Artery
How many branches come off the 2nd part of the Axillary Artery and give the name(s)?
Thoracoacromial Artery
Lateral Thoracic Artery
What are the names of the three branches that arise from the 3rd part of the Axillary Artery?
- Anterior Circumflex Humeral Artery
- Posterior Circumflex Humeral Artery
- Subscapular Artery
What forms the Axillary vein and where does it lie?
- Brachial vein and Basilic vein at inferior border of the teres major.
- Lies medial side of axillary artery
The Musculocutaneous nerve Provides what innervation?
- Flexor muscles of the arm
- Cutaneous: Lateral antebrachial cutaneous nerve
What are the names of the Radial Cutaneous nerve Branches?
- Inferior Lateral Brachial Cutaneous Nerve
- Posterior Brachial Cutaneous Nerve
- Posterior Antebrachial Cutaneous Nerve
What nerve wraps around the surgical neck of the Humerus and what accompanies this nerve?
Axillary Nerve
-Posterior Circumflex Humeral Artery
Which nerve wraps around the shaft of the Humerus and what accompanies this nerve?
Radial Nerve
-Deep Brachial Artery
The Quadrangular Space is a four-sided posterior axilla space formed by what?
- Superiorly: Inferior Border of Teres minor
- Inferiorly: Superior Border of Teres major
- Medially: Long Head of Triceps
- Laterally? Surgical neck of humerus
