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CLASSWORK. Ch. 7.4 Skeletal System Key Terms
CLASSWORK. Ch. 7.4 Skeletal System Key Terms
CLASSWORK. Ch. 7.4 Skeletal System Key Terms
CLASSWORK. Ch. 7.4 Skeletal System Key Terms
Enter CaCLASSWORK. Ch. 7.4 Skeletal System Key Terms
tegory Name
100

appendicular skeleton

  • appendicular skeleton: Forms the extremities and is composed of the shoulder girdle, arm bones, pelvic girdle, and leg bones.


100

diaphysis

  • diaphysis: The long shaft of a long bone.


100

fontanels

  • fontanels: Spaces, or "soft spots," in the cranium at birth that allow for the enlargement of the skull as brain growth occurs.


100

medullary canal

  • medullary canal: A cavity in the diaphysis (of a long bone).


100

periosteum

  • periosteum: A tough membrane that covers the outside of bone.


200

carpals

  • carpals: Wrist (bones).


200

endosteum

  • endosteum: A membrane that lines the medullary canal and keeps the yellow marrow intact.


200

foramina

  • foramina: Openings in bones that allow nerves and blood vessels to enter or leave the bone.


200

metacarpals

  • metacarpals: Palm of the hand (bones).


200

phalanges

  • phalanges: Finger and toe bones (3 on each finger and 2 on the thumb; 2 on the great toe and 3 on each of the other 4 toes).


300

axial skeleton

  • axial skeleton: Forms the main trunk of the body and is composed of the skull, spinal column, ribs, and breastbone.


300

epiphysis

  • epiphysis: The two extremities, or ends, of a long bone.


300

humerus

  • humerus: Upper arm (bone).


300

metatarsals: 

  • metatarsals: Instep of foot (bones).


300

radius

  • radius: Lower arm (bone) on the thumb side that rotates around the ulna to allow the hand to turn freely.


400

clavicles

  • clavicles: Collarbones.


400

femur

  • femur: Thigh (bone).


400

joints

  • joints: Areas where two or more bones join together.


400

os coxae

  • os coxae: Coxal, or hip, bones.


400

red marrow

  • red marrow: Produces red blood cells (erythrocytes), platelets (thrombocytes), and some white blood cells (leukocytes).


500

cranium

  • cranium: The spherical structure that surrounds and protects the brain.


500

fibula

  • fibula: The slender smaller bone of the lower leg that attaches to the proximal end of the tibia.


500

ligaments

  • ligaments: Connective tissue bands that help hold long bones together at joints.


500

patella

  • patella: Kneecap.


500

ribs

  • ribs: Twelve pairs of bones that attach to the thoracic vertebrae on the dorsal surface of the body.