Chapter 6 pt. 2 Flashcards
ossification (osteogenesis)
the process of bone tissue formation
endochondral ossification
- makes cartilage that is then replaced by bone
- long bones made this way
intramembranous ossification
- make fibers that then produce bones
- skull and clavicles
mesenchymal cells
cells that help form fibrous connective tissues that are used during intramembranous ossification to form the skull and clavicles
bones increase thickness by…..
appositional growth
T or F: hematopoiesis refers to the formation of blood cells within the red marrow cavities of certain bones
true
T or F: short, irregular, and flat bones all consist of thin plates of spongy bone covered by compact bone
True
T or F: the periosteum is a tissue that only serves to protect the bone because bones not supplied with nerves or blood vessels
False
T or F: the term osteoid refers to the organic part of compact bone matrix without calcium mineralization
True
T or F: closure of the epiphyseal plate stops all bone growth for the rest of life
False
Yellow bone marrow contains a large percentage of ——
fat
The cell responsible for secreting matrix new matrix of bone is the ——-
osteoblast
What tissue kind is the forerunner of making long bones in an embryo?
hyaline cartilage
A fracture in the shaft of a bone would be a break in the ——-
diaphysis
Ossification of the ends/epiphyses of long bones—–
is produced by secondary ossification centers
Bones are covered and lined by a protective tissue called periosteum. The inner (osteogenic) layer of this membrane consists primarily of——
osteogenic cells
The periostium is secured to the underlying bone by ——
perforating fibers
The central (Haversian) canal that runs through the core of each osteon is the site of ———
blood vessels and nerve fibers
For intramembranous ossification to take place, which of the following is necessary?
ossification centers from in the fibrous connective tissue membrane
The process of bones increasing in thickness is known as ——–
appositional growth
four zones of epiphyseal plate
- proliferation (growth) zone
- hypertrophic zone
- calcification zone
- ossification (osteogenic) zone
