chapter 6 Flashcards
(26 cards)
What is yellow marrow?
Yellow marrow is stored in the medullary cavity of the long bone.
What is it made of and where is it located?
It is made of adipose tissue or fat in order to store energy.
What are the two types of bone?
Compact and cancellous
What is the unit that makes up compact bone?
Osteon
What is spongy bone made of?
Trabeculae
What happens if bone formation occurs without adequate growth hormone?
Bones may be too short, inadequate growth may occur
what are cells that build up the bone matrix called?
osteoblasts
what are the cells that break down bone called?
osteoclasts
how do the role of vitamin d and calcium in our bone health?
Vitamin d helps the body absorb calcium
how do bones grow longer during childhood in adolesecnce
atepiphyseal plates cartilage grows and divides and then hardens or ossifies
why is there an opening, hole, or canal through the osteon?
The opening is for the blood vessels
What is the periosteum and how does it attach to the bone?
membrane that covers the bone it is attached to the bone by sharpeys fiber
The three germ layers are endoderm, mesoderm and ectoderm. Which layer does bone come from?
Bone comes from Mesoderm
In flat bones, what is the name of the two layers of compact bone that have a spongy layer in between?
Diploe
Why are the ends of some bones covered with cartilage?
Reduces friction and provides padding.
How would you classify the bones of the skull by shape? Long, short, irregular, flat, sesamoid?
The skull is composed of flat bones
What is Colles’ Fracture? What is Pott’s fracture?
Colles’ fracture is a break in the wrist or carpals or the bones associated with the radius/ulna. Pott’s fracture is a break in the ankle or tarsals or the bones associated with the tibia/fibula
what is bone cells job
Osteocytes regulate the formation of new bone and the resorption of old bone - dictating bone remodeling and repair
What structure is responsible for bones growing longer?
Epiphyseal plate
What are chondrocytes?
Cartilage cells
How does that process work in a developing human?
Bone forms from cartilage and chondrocytes
What is ossification?
The process of forming mature bone
