SKELETAL SYSTEM Flashcards
A type of bone that has a long, thin shape and is longer than they are wide.
Long bone
A type of bone that is relatively thin, flattened shape and is usually curved.
Flat bone
A type of bone that has a shape that does not conform to the other types of bone.
Irregular bone
A type of bone that has a squat, cubed shape and about as wide as they are long.
Short bone
What is the tubular shaft that forms the axis of long bone?
Diaphysis
It is the expanded ends of long bones.
Epiphyses
It is the site of bone growth in length.
Epiphyseal plate
It separates the diaphysis from the epiphyses.
Epiphyseal line
The delicate membrane covering internal surfaces of bone.
Endosteum
What is the double layer of protective membrane covering the outer surface of bone?
Periosteum
How many pairs of ribs are attached to the thoracic vertebrae?
12 pairs of ribs
It articulates with the humerus and the clavicle.
Scapula
It holds the shoulder away from the body and allows movement of the scapula, resulting in free movement of the arm.
Clavicle
What is it called when a bone forms by replacing hyaline cartilage?
Endochondral ossification
What is it called when a bone develops from a fibrous membrane?
Intramembranous ossification
Osteoblasts produce bone matrix and become?
Osteocytes
What cells are responsible for the breakdown of bone tissue?
Osteoclasts
What is the major storage site for calcium?
Bone
What is the major regulator of blood calcium?
Parathyroid hormone (PTH)
What are the two hormones that regulate calcium levels in the blood?
Parathyroid hormone (PTH) and Calcitonin
What are the types of joints?
Fibrous joints, Cartilaginous joints, & Synovial joints
What is the type of fibrous joint that involve interdigitating bones?
Sutures
Are joints in which bones are joined by hyaline cartilage.
Synchondroses
Are slightly movable joints made by fibrocartilage.
Symphyses
