flat bones
The skull bones and ribs and pelvis are types of bones classified as __________________.
long bones
Bones that bear the weight of the body are classified as _____________.
ligaments
The projection of irregular bones such as on the vertebrae provide sites for the attachment of muscle tendons and __________.
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axial skeleton
all the bones of the skull, vertebrae column, and the rib cage are considered together as the ___________.
tarsals
Two examples of short block-like bones in the body are the bones of the wrist called carpals and the bones of the ankle called _________.
hydroxyapatite
Crystals consisting mostly of calcium phosphate form a component of bone called _________.
collagen
The major protein in the fibers of the bone matrix is _______.
blood cells
Bones serve to support the body, protect the organs, store calcium, and serve as sites of formation of _______.
sternum
Red bone marrow is particularly active at the center of bones such as the vertebrae, and bones of the __________.
epiphysis
The two ends of a long bone are known as ________.
articular cartilage
The thin layer of hyaline cartiliage at the outer surface at the end of a long bone is called the ________.
periosteum
Wherever it lacks a cartilage cover, the long bone is covered with a connective tissue membrane known as the _________.
spongey bone
The anterior portion of the epiphysis of the bone consists of _________.
yellow bone marrow
The marrow cavity in long bones is filled with __________.
trabeculae
Spongey bone contains networks of boney plates and rods known as ________.
osteon
The histology and physiological unit of compact bone is the ________.
lacunae
The microscopic space than contain the osteocytes of bone are the _________.
perforating canals
The central canals of osteones are connected by a system of channels called ________.
osteoblasts
The cells making the protein and hydroxyapatite for bone growth are the _________.
ossification
Bone formation takes place by a process called ________.
intramembraneous ossification
Bone formation occuring within membranes is correctly known as ________.
endochondral ossification
Bone formation taking place near the end of the long bones occurs by the process of ________.
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osteoclasts
Bone is remodeled and dissolved by substances secreted by bone destroying cells referred to as ________.
calcium ions
The destruction and remodeling of bone provides the body with ions such as phosphate ions and ________.
osteoporosis
The excessive breakdown of bone may exceed its deposit in the condition called ________.
thorax and brain
Flat bones help protect the delicate tissues of the _______.
triglyceride storage
The functions of the skeletal system include: mineral storage, blood cell production, supporting the body, protection of organs, assisting movement and __________.
scapulae and ribs
The irregular bones of the body include the ____________.
vertebrae, skull and ribcage
The bones of the axial skeleton are _________, __________, and __________.
calcium phosphate
The hydroxyapatite of bone is composed mostly of ________.
red bone marrow
Blood cell formation occurs in __________.
long
The diaphysis and epiphysis are portions of a _____ bone.
periosteum
The _________ is a connective tissue membrane that covers portions of bones.
osteons
Perforating canals connect the central canals with one another in the ________.
osteoblasts
The principal bone-forming cells of the body are_________.
skull bones
Intramembranous ossification is a type of bone formation occuring in the _________.
epiphyseal plate
enchondral ossification occurs at the __________.
lengthen
Bone ceases to ________ when the end of puberty is reached.
osteoclasts
Cells that destroy bone and provide calcium for the body are known as _____________.