A&P Upper Extremity Flashcards
How many vertebrae are in each section of the vertebral column
Cervical: 7
Thoracic: 12
Lumbar: 5
Sacrum: 5 (fused)
Coccyx: 4 (fused)
What are the curves of the spine
Cervical and lumbar are lordotic
Thoracic and sacral curves are kyphotic
How do the curves help the spine
Increase strength, help balance and absorb shock
Which vertebrae of the spine is the largest and strongest?
Lumbar vertebrae
Which portion of the spine is the foundation for pelvic girdle
Sacrum
What are the bones of the thorax
Sternum
Ribs
What are the parts of the sternum?
Manubrium
Body
Xiphoid process
What are true ribs?
R1-R7: Articulates directly with sternum
What are false ribs?
R8-R10: articulates with sternum via R7
What are floating ribs?
R11-R12: do not articulate at all with sternum
Name the bones of the pectoral girdle
Clavicle
Scapula
Acromion
Coracoid
Which bone of the pectoral girdle does the following:
- Articulates with sternum medially
- Articulates with acromion laterally
- “Strut” between the scapula and sternum
Clavicle
Which bone of the pectoral girdle does the following:
- Part of the scapula that forms the “tip of the shoulder”
- Extends anteriorly and superiorly over the humeral head
Acromion
Which structure of the pecotral girlde provides attachment site for muscles and ligaments?
Coracoid
What are the ligaments of the pectoral girdle
Acromioclavicular Ligament (AC)
Coracoclavicur Ligament (CC)
Coraacromial Ligament
What makes up the labrum?
Glenoid cavity
Glenoid labrum
What portion of the labrum does the following:
- shallow cavity, only allowing 25% of humeral head to make contact
- Articulates with head of humerus to form shoulder joint
Glenoid cavity
What portion of the labrum does the following:
- forms ring around cavity
- Deepens glenoid and provides more stability to joint
Glenoid labrum
What muscles make up the rotator cuff?
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis
What are the bones of the elbow
Humerus
Radius
Ulna
Bones of the wrist
Scaphoid (some)
Lunate (lovers)
Triquetrium (try)
Pisiform (positions)
Trapezium (that)
Trapezoid (they)
Capitate (can’t)
Hamate (handle)
Which nerve provides sensation to the little finger and 1/2 of ring finger
Ulnar nerve
Which nerve provides sensation to the palmar and dorsal aspect of the first 3 and 1/2 fingers?
Median nerve
Which nerve provides sensation to the dorsum of the hand and lateral first 3 fingers and one half of fourth finger?
Radial nerve
