Scapula and clavicle {pectoral girdle}| hold arms.
sacrum and ilium {sacroiliac}|.
shoulder blades {scapula}|.
collarbone {clavicle}|.
Birds can fuse clavicles to form V-shaped bone {wishbone}| anterior to breastbone.
breastbone {sternum}|.
Sternum parts {gladiolus, bone} can be above xiphisternum.
Sternum parts {manubrium} can be above xiphisternum.
The smallest sternum parts {xiphoid} {xiphisternum} can be below gladiolus and manubrium.
Surrounding neural cord are 33 backbones {vertebra, spine}| {spine, vertebra}, which have flexible joints. Vertebrae are cervical, thoracic, lumbar, sacrum, and coccyx.
neck {cervical}|.
ribs {thoracic}|.
lower back {lumbar}|.
pelvis {sacrum}|.
lower tip {coccyx}|.
Ileus, ischium, and pubis fuse {pelvic girdle} {pelvis}| to hold legs.
middle back {ileus}|.
sides {ischium}|.
front {pubis}|.
ribs {rib cage}|.
Top seven rib pairs {true rib}| {sternal rib} attach to sternum.
Bottom five rib pairs {false rib}| do not attach to sternum. Top three false ribs connect to costal cartilage of rib above them.
Bottom two false ribs {floating rib}| {fluctuating rib} {vertebral rib} have no attachment in front.
4-Zoology-Organ-Skeleton-Bones
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Date Modified: 2022.0225