STRUCTURAL AND FUNCTIONAL ORGANIZATION OF THE UPPER EXTREMITY MUSCULOSKELETAL SYSTEM Flashcards
Name the regions of the vertebral column and how many vertebrae per section
a. Cervical
(1) 7 vertebrae
b. Thoracic
(1) 12 vertebrae
c. Lumbar
(1) 5 vertebrae
d. Coccyx
(1) 4 fused Vertebrae
There are four normal cures which help to increase strength, help balance, and absorb shock.
I dont know what they are though and it doesnt say in the TG so far.
Where would you find a lordotic curve
Cervical and thoracic vertebrae
Where would you find a kyphotic curve
Thoracic and sacral curves
Anatomy of a the vertebra
(1) Body
(2) Vertebral arch
(3) Processes extending from the arch
Hallmarks of Thoracic Vertebra
(2) Larger than cervical vertebrae
(3) Have facets for rib articulation
Hallmarks of Lumbar Vertebra
(2) Largest, strongest
(3) Spinous processes are short, thick
Hallmarks of Sacrum Vertebra
(2) Foundation for pelvic girdle
(3) Contain sacral foramina for nerves and blood vessels
bones of the thorax
a. Sternum
b. Ribs
Parts of the sternum
(1) Manubrium
(2) Body
(3) Xyphoid process
true ribs
R1-R7
Costal cartilage articulates directly with the sternum
false ribs
R8-R10
Articulate with the sternum bi cartilage of Rib 7
floating ribs
R11- R12
Do not articulate with the sternum at all
bones of the pectoral girdle
a. Clavicle
b. Scapula
What does the Clavicle articulate with
(1) Articulates with sternum medially
(2) Articulates with acromion laterally
(3) The “strut” between the scapula and sternum
Name the regions of the Scapula
(1) Spine
(2) Body
(a) Vertebral border
(b) Axillary border
(3) Acromion
(a) Part of the scapula that forms the “tip of the shoulder”
(b) Extends anteriorly and superiorly over the humeral head
(4) Coracoid
(a) Provides attachment site for muscles and ligaments
Ligaments of the Pectoral Girdle
a. Acromioclavicular ligament
b. Coracoclavicular ligament
c. Coracoacromial ligament
How much of the humeral head makes contact in the Glenoid Cavity
25%
What is the ring that is formed in the glenoid cavity
Glenoid Labrum
What does the glenoid labrum do
Deepens the glenoid and provides more stability to the joint
What are the muscles of the rotator cuff
(SITS) supraspinatus infraspinatus teres minor subscapularis
Which rotator cuff muscle Assists deltoid in abduction of the humerous at the shoulder
Supraspinatus
Which rotator cuff muscle External rotation of the humerus at the shoulder joint
Infraspinatus
Which rotator cuff muscle Extends arm at shoulder and rotation of the arm externally
Teres minor
Which rotator cuff muscle Internal rotation of the arm at the shoulder.
Subscapularis
Which muscle Abducts, flexes, and rotates arm at shoulder join
Deltoid
Which muscle Multiple fibers in this large muscle move the scapula multi-directionally
Trapezius
Which muscle Elevates scapula and rotates downward
Levator scapula
Which muscle Elevates and adducts scapula and rotates downward and Stabilizes the scapula
Rhomboid major
Which muscle Adducts and rotates arm medially at the shoulder and Flexes arm at the shoulder joint
Pectoralis major
Which muscle Extends, adducts, and rotates arm medially at the shoulder joint and Draws arm downward and backward
Latissimus dorsi
Which muscle Extends arm at the shoulder joint and Assists with adduction and rotation of the arm medially
Teres major
Which muscle Flexes and adducts arm at shoulder
Coracobrachialis
Name the bones of the Elbow
a. Humerus
b. Radius
c. Ulna
medical term for elbow
Olecranon
*Protected by an olecranon bursa
Moving the palm up
Supination
Moving the palm down in the opposite direction
Pronation
Supination and pronation occur ONLY at the
elbow.
Which muscle Flexes arm at the shoulder and Flexes and supinates forearm at the elbow
Biceps Brachii
Which muscle Flexes forearm at the elbow joint
Brachialis
Which muscle Flexes forearm at the elbow joint
Brachioradialis
Which muscle Extends forearm at the elbow joint and Extends arm at shoulder
Triceps brachii
Which muscle Supinates forearm
Supinator
Which muscle Pronates forearm
Pronator teres
Name the bones of the hands
a. Carpals
b. Metacarpals
c. Phalanges
Name the bones of the carpals
(Some Lovers Try Positions That They Cannot Handle) Scaphoid Lunate Triquetrim Pisiform Trapezium Trapezoid Capitate Hamete
Name the region of the Metacarpals
Base
body
head
Name the region of the Phalanges
1-5
Base, body, head
Which muscle Flexes and abducts hand at the wrist
Flexor carpi radialis
Which muscle Flexes and adducts hand at the wrist
Flexor carpi ulnaris
Which muscle Weakly flexes hand at the wrist joint
Palmaris
Which muscle Flexes hand at wrist and Flexes phalanges of each finger at the PIP joint
Flexor digitorum superficialis Inversion
Which muscle Flexes hand at wrist and Flexes phalanges of each finger at DIP
Flexor digitorum profundus
Which muscle Extends and abducts hand at the wrist joint
Extensor carpi radialis longus
Which muscle Extends and adducts hand at the wrist joint
Extensor carpi ulnaris
Which muscle Extends hand at wrist joint and Extends phalanges of each finger
11.
Extensor digitorum
Which Nerve:
(1) Motor supply to most of the intrinsic hand muscles
(a) Excludes thenar muscles and two lumbricals on radial aspect
(2) Sensation to little finger and ½ of ring finger
Ulnar nerve
Which Nerve:
Palmar and dorsal aspect of first 3 and ½ fingers
Median nerve
Which Nerve:
Dorsum of the hand and lateral first three fingers and one half of fourth finger
Radial nerve
