The Appendicular Skeleton Pectoral Girdle - PowerPoint PPT Presentation

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The Appendicular Skeleton Pectoral Girdle

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Title: The Appendicular Skeleton Pectoral Girdle


1
The Appendicular Skeleton (Pectoral Girdle)
  • By Chelsea, Gina, Erin, Alli, and Cody

2
(No Transcript)
3
Clavicle
  • Lets the arm hang freely by keeping the scapula
    in place
  • Also called collarbone
  • Only skin cover it so it can easily be felt
  • Fractures are common, especially in babies during
    birth

4
Scapula
  • Commonly known as shoulder blade
  • Connects humerus and clavicle
  • Process is the Coracoid Acromion
  • Spine is a plate of bone that separates supra
    from the fossa

5
Arms
  • Bones in the arm consist of the Humerus, the
    Radius, and the Ulna

6
Fossa
  • Socket that the ball of the humerus sets in
  • Cavity surface is cover in cartilage

7
Humerus
  • Important connection places
  • The head (6)
  • Capitulum (2)
  • Trochlea shaft (12)
  • Long bone in the arm that runs from shoulder to
    elbow
  • Also called the funny bone

8
The Hand
9
Carpals
  • Cluster of small bones in the wrist between the
    metacarpus and the radius and ulna
  • They do not belong to individual fingers
  • Main role is to position effectively and flex in
    the forearm
  • 8 for each hand

10
Metacarpals
  • Located between hand skeleton and phalanges
  • The index metacarpal is most firmly fixed while
    the thumb is independent
  • The ring and last metacarpal
  • transition into each other

11
Phalanges
  • Commonly called finger bones
  • 14 different bones on each hand (3 per finger and
    2 for the thumb)
  • Proximal extremities are the first row, nearest
    to the rest of the hand
  • Distal extremities are smaller than the proximal
    and farther from the hand

12
Elbow
13
Olecranon Process
  • The Olecranon is part of the forearm
  • Basically, it is your elbow.
  • the big pointy part ?

14
Coronoid Process
  • Also part of the elbow
  • The point where the humerus and ulna radius
    connect

15
Semilunar Notch
  • Concave notch that the humerus sets in
  • Divided into medial and lateral sections by a
    ridge

16
Radial Tuberosity
  • Depression lateral to the coronoid process
  • Attaches to the annular ligament

17
Shoulder Dislocation Injury
  • Happens when a strong force pulls the shoulder
    outward or extreme rotation causes the ball on
    the humerus to come out of the socket
  • Commonly occurs when there is a backward pull
    that overwhelms unprepared muscles

18
Shoulder Dislocation Injury (cont.)
  • Dislocations are most common in contact sports
    like football, hockey, rugby
  • They are also common in downhill snowboarding,
    skiing, or volleyball

19
Credits
  • http//en.wikipedia.org/wiki/Metacarpals
  • http//en.wikipedia.org/wiki/Carpals
  • http//www.pediatric-orthopedics.com/Topics/Bones/
    Wrist_Hand/Carpals.jpg
  • http//en.wikipedia.org/wiki/Phalanges_of_the_hand
  • http//www.bing.com/images/search?qphalangesoft
    hehandfocalff275bcec7149406217a1573c820b40efur
    lhttp//www.hawaiiortho.com/Patient_Info/Hand/arm
    hand.gif
  • http//en.wikipedia.org/wiki/Olecranon_process
  • http//en.wikipedia.org/wiki/Coronoid_process_of_t
    he_ulna
  • http//en.wikipedia.org/wiki/Radial_notch
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