Chapter 7.4 Key Terms
appendicular skeleton
the shoulder. girdle, arm bones, pelvic girdle, and leg bones
diaphysis
The long shaft
fontanels
Spaces; soft spots
medullary canal
a cavity in the diaphysis.
periosteum
The outside of bone is covered with a of tough membrane
axial skeleton
the main trunk of the body.com and is composed of the skull, spinal column, ribs, and breastbone.
endosteum
a membrane that lines the medullary canal and keeps the yellow marrow intact.
foramina
openings in bones that allow nerves and blood vessels to enter or leave the bone.
metacarpals
palm of the hand
phalanges
The bones of the fingers and toes
carpals
wrist
epiphysis
the two extremities, or ends
humerus
upper arm
metatarsals
instep of foot
radius
lower arm on thumb side that rotates around the ulna to allow the hand to turn freely
clavicles
collarbones
femur
upper leg bone
joints
areas where two or more bones join together.
os coxae
coxal, or hip, bones
red marrow
responsible for producing red blood cells
cranium
the spherical structure that surrounds and protects the brain.
fibula
the slender smaller bone of the lower leg that attaches to the proximal end of the tibia
ligaments
help hold long bones together at joints.
patella
kneecap
ribs
which protect the heart and lungs