Anterior Aspect Of The Sholder And Arm Flashcards
What are the two branches of the ventral root of the 1-6 thoracic spinal nerve (intercostal nerve) ?
1- anterior cutaneous branches
2- lateral cutaneous branches
Where is the anterior aspect of the shoulder superficial fascia ?
It continues with the neck, upper limb above & abdomen below
What dose the superficial fascia contain?
Mammary gland.
What type of fascia is the pectoral fascia ?
Deep fascia.
What dose the Pectoral fascia cover ?
It covers the pectoralis major
Where dose the Pectoral fascia extend from ?
Between the pectoralis major’s fasciculi
What dose the Pectoral fascia attach ?
sternum medially, clavicle above, continuous inferolaterally with fascia of shoulder, axilla, and thorax
Where is the Pectoral fascia thin at ?
Over the pectoralis major
Where is the Pectoral fascia thicker at ?
Between the pectoralis major & latissimus dorsi, it crosses the axilla while forming the floor of it
Where dose the axillary fascia split into 2 ?
at the lat margin of the latissimus dorsi; two layers ensheathe the muscle & attach to the spines of thoracic vertebrae.
What dose the Infraclavicular fossa separate ?
upper border of pectoralis major from deltoid muscle
What dose the infraclavicular fossa contain ?
Cephalic v, deltoid branch of thoracoacromial artery
What dose the Lower border of pectoralis major form ?
Anterior axillary fold
What is the Clavipectoral fascia ?
Strong fibrous sheath, behind clavicular part of pectoralis major
What dose the clavipectoral fascia fill and cover ?
Fills gap between pectoralis minor & subclavius, and it covers the axillary vesseels nerves
What dose the clavipectoral fascia pierce ?
pierced by the cephalic vein, thoracoacromial artery and vein, lat pectoral nerve, and lymph vessels
What is the shape of the Pectoralis major ?
Thick, fan-shaped
Where is the origin of the pectoralis major ?
- Clavicular part: Ant surface of sternal half of clavicle.
- Sternocostal part: Ant surface of manubrium and body of sternum, costal cartilages of 2nd- 6th/7th ribs.
- Abdominal part: Aponeurosis of obliquus external abdominal muscle.
How is the clavicular fibers separate ?
From the sternal fibers by a slight cleft.
Where
Where
