Session 1-Anatomy Of The Shoulder, Pectoral Region And Axilla Flashcards
Which four short muscles hold the shoulder joint together?
Subscapularis
Supraspinatus
Infraspinatus
Teres minor
Which short muscle holding the shoulder joint together is on the front?
Subscapularis
What movement of the humerus does the subscapularis produce?
Internal rotation
What movement does the supraspinatus initiate?
Abduction of the humerus
The four short muscles converge on the humerus to form an almost continuous cuff of flat, supporting tendons. What is this called?
Rotator cuff
Which muscle arises from the coracoid process and inserts on the humerus?
Coracobrachialis
How many muscles keep the scapula in place and move it in relation to the trunk?
Six (four on the back, one in front and one underneath)
What is the name of the muscle underneath the scapula that keeps it in place?
Serratus anterior
Which four muscles are on the back of the scapula, keeping it in place?
1) Trapezius
2) Levator scapulae
3) Rhomboid Minor
4) Rhomboid Major
Which muscle is on the front of the scapula, keeping it in place?
Pectoralis minor
Which two muscles define the anterior and posterior walls of the axilla?
Pectoralis major
Latissimus dorsi
Which muscle surrounds the shoulder joint from front to back?
Deltoid
What is the opening at the top of the chest called?
Superior thoracic aperture
What are the main spinal nerves to the upper extremity?
C5 C6 C7 C8 T1
Which vein is in the groove between pectoralis major and deltoid?
Cephalic vein
Complete the sentences:
The cephalic vein joins the main vein of the upper extremity, ____________ vein and this is joined by the main vein of the head and neck, ___________ _____________ vein. Together, they form the ____________________ vein. The right and left _________________ veins join to form the ____________ ______ ______.
Subclavian Internal jugular Brachiocephalic Brachiocephalic Superior vena cava
What are the two other names for the subclavian artery?
Axillary
Brachial
What are the five main nerves emerging from the brachial plexus?
Musculocutaneous Median Ulnar Radial Axillary
What are the three trunks?
Upper
Middle
Lower
What are the two divisions of the brachial plexus?
Anterior
Posterior
What are the three cords of the brachial plexus?
Lateral
Medial
Posterior
What does the lateral cord divide into?
Musculocutaneous nerve
Median nerve
What does the medial cord divide into?
Ulnar nerve
Median nerve
What does the posterior cord branch into?
Axillary nerve
Radial nerve
