Ch. 7.4 Skeletal System Key Terms
What is Appendicular Skeleton ?
Forms the extremities and is composed of the shoulder girdle, arm bones, pelvic girdle, and leg bones.
What is Axial Skeleton ?
Forms the main trunk of the body and is composed of the skull, spinal column, ribs, and breastbone.
What is Carpals?
Wrist
What is Clavicles?
Collarbones
What is Cranium?
The spherical structure that surrounds and protects the brain.
What is Diaphysis ?
The logn shaft
What is Epiphysis?
The two extremities or ends
What is Femur
Thigh
What is Fibula?
The slender smaller bone of the lower leg that attaches to the proximal end of the tibia.
What is Frontanels?
Allow for the enlargement of the skull as brain growth occurs.
What is Humerus?
Upper arm
What are Joints?
Areas where two or more bones join together
What are Ligaments ?
Connective tissue bands that help hold long bones together at joints.
What is Medullary Canal?
A cavity in the diaphysis
What is Metacarpals ?
Palm of the hand
What is Metatarsals?
Instep of foot
What is Patella?
Kneecap
What is Phalanges?
3 on each finger and 2 on the thumb
What is Red Marrow?
Where a process known as hematopoiesis takes place.
What is Scapulas ?
Shoulder bones
What is Os Coxae?
Coxal, or hip, bones
What is Periosteum?
The outside bone is covered with a tough membrane.
What is Radius?
Lower arm on thumb side that rotates around the ulna to allow the hand to turn freely.
What is Ribs?
12 pairs of ribs that attach to the thoracic vertebrae on the dorsal surface of the body.
What is Sinuses?
Air spaces in the bones of the skull that act as resonating chambers for the voice.