STRUCTURAL AND FUNCTIONAL ORGANIZATION OF THE UPPER EXTREMITY MUSCULOSKELETAL SYSTEM Flashcards
How many vertebrae are in the Cervical spine
7
How many vertebrae are in the Thoracic spine
12
How many vertebrae are in the lumbar spine
5
How many vertebrae are in the coccyx
4
What regions of the spine have Kyphotic curves
Thoracic and sacral
What regions of the spine have Lordotic curves
Cercial and thoracic
What spinal region
Have facets for rib articulation
Thoracic vertebrae
What region of he spine
-Largest, strongest
-Spinous processes are short, thick
Lumbar
What region of the spine?
-fused into one unit
-Foundation for pelvic girdle
-Contain sacral foramina for nerves and blood vessels
Sacrum
what are the different parts of the sternum
(1) Manubrium
(2) Body
(3) Xyphoid process
- ______ are true ribs
- ______ are false ribs
- ______ are floating ribs
(1) R1-R7
(2) R8-R10
(3) R11- R12
What bone?
(1) Articulates with sternum medially
(2) Articulates with acromion laterally
(3) The “strut” between the scapula and sternum
Clavicle
Part of the scapula that forms the “tip of the shoulder”
-Extends anteriorly and superiorly over the humeral head
Acromion
What part of the scapula
Provides attachment site for muscles and ligaments
Coracoid
The _______ cavity is shallow, allowing only about 25% of humeral head to make contact
glenoid
The _______ forms a ring around the glenoid cavity
(1) Deepens the glenoid and provides more stability to the joint
glenoid labrum
The muscles of the rotator cuff are the SITS muscles, what are they
supraspinatus,
infraspinatus,
teres minor,
subscapularis
What muscle?
Assists deltoid in abduction of the humerous at the shoulder
Supraspinatus
What muscle?
External rotation of the humerus at the shoulder joint
Infraspinatus
What muscle?
External rotation of the humerus at the shoulder joint
Infraspinatus
What muscle?
Extends arm at shoulder and rotation of the arm externally
Teres minor