Download I. The Appendicular Skeleton

I. The Appendicular Skeleton
A. Appendicular skeleton
1. Bones that make up the appendicular
skeleton are those of the appendages
2. Includes the pectoral and pelvic
girdles and the upper and lower
extremities
B. Pectoral Girdle
1. The pectoral girdle or the shoulder
girdle attach the upper extremities to the
axial skeleton
2. Consists of two bones: the clavicle
and the scapula
a. Clavicle (collar bone) a long
slender, S shaped bone with two
curves
1. Medial 1/3 is convex
anteriorly and lateral 1/3 is
concave
2. Lies superior and anterior
to the thorax and superior to
the first rib
3. Medial end attaches by
the sternoclavicular joint to
the sternum
4. Lateral end attaches to
scapula by the acromioclavicular
b. Scapula (shoulder blade) large
triangular flat bone in the posterior
of the thorax between the second
and seventh ribs
1. Has a spine that runs
diagonally across posterior
a. End of the spine
becomes the acromion
which attaches to the
clavicle
2. Inferior to the acromion is
a depression called the
glenoid cavity which is the
shoulder joint
3. The scapular notch allows
passage of the supra scapular
nerve
4. Has many fossae for
muscle attachment