Ch. 7.4 Skeletal System Key Terms
what is Appendicular skeleton
forms the extremities and is composed of the shoulder girdle.
what is Diaphysis
the long shaft
what is Fontanels
or the soft spots allow for enlargement of the skull as the brain growth occurs
what is medullary canal
is a cavity in the diaphysis
what is Periosteum
which contains blood vessels, lymph vessels and osteoblasts
what is Axial skeleton
forms the main trunks of the body and is composed of the skull.
what is Endosteum
is a membrane that lines the medullary canal keeps the yellow marrow intact
what is Foramina
are openings in bones that allow nerves and blood vessels to enter or leave the bone
what is metacarpals
palm of hand
what is Phalanges
3 on each finger and 2 on the thumb
what is Carpals
wrist
what is Epiphysis
two extremities, or ends are each called the epiphysis
what is Humerus
upper arm
what is metarsals
instep of foot
what is Radius
lower arm on thumb side that rotates around the ulna to allow hand to turn freely
what is Clavicles
are attached to the manubrium by ligaments.
what is femur
thigh
what is joints
are areas where two or more bones join together .
what is os coxae
coxal, or hip bones which join with the sacrum on the dorsal part of the body
what is red marrow
is found in certain bones such as, the vertebrae, ribs sternum and cranium
what is Cranium
is the spherical structure that surrounds and protects the brain
what is fibula
The slender smaller bone of the lower leg that attaches to the proximal end of the tibia
what is ligaments
help, hold long bones together at joints
what is Patella
kneecap the larger weight-bearing bone of the lower leg commonly called the shine bone
what is Ribs
are attached to the sternum with costal cartilages to form a ‘’cage ‘’ that protects the heart and lungs