Ch. 7.4 Skeletal System Key Terms
What is the appendicular skeleton?
forms the extremities and is composed of the shoulder girdle, arm bones, pelvic girdle, and leg bones
What is the diaphysis?
What is the fontanels?
spaces or soft spots in the cranium
What is the medullary canal?
cavity in the diaphysis
What is the periosteum?
tough membrane that contains blood vessels, lymph vessels, and osteoblasts
What is the axial skeleton?
forms the main trunk of the body and is composed of the skull, spinal column, ribs, and breastbone
What is an endosteum?
membrane that lines the medullary canal and keeps the yellow marrow intact
What is foramina?
openings in bones that allow nerves and blood vessels to enter or leave the bone
bones in the palm of the hand
What are phalanges?
toe and finger bones
What are carpals?
wrist bones
What is the epiphysis?
two extremities or ends of a bone
What is the humerus?
upper arm bones
What are metatarsals?
bones in the instep of foot
What is the radius?
lower arm on thumb side that rotates around the ulna to allow the hand to turn freely
What are the clavicles?
two collarbones
What is the femur?
upper leg bone
What are joints?
areas where two or more bones join together
What is os coxae?
coxal or hip bones
found in certain bones, such as the vertebrae, ribs, sternum, and cranium, and in the proximal ends of the humerus and femur
What is the cranium?
spherical structure that surrounds and protects the brain
What is the fibula?
slender smaller bone of the lower leg that attaches to the proximal end of the tibia
What are ligaments?
connective tissue bands
What is the patella?
kneecap bone
What are ribs?
bones that attach to the thoracic vertebrae on the dorsal surface of the body