Exam 4 Nurs 611 Questions and
Answers (100% Correct Answers)
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Bones Ans: provide support and production for the body's
tissues and organs.
Important source of minerals and blood cells
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Bone formation Ans: begins during embryonic development
with the differentiation of mesenchymal cells into either
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chondrocytes or preosteoblasts.
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bone minerals either crystalize on a cartilage or become bone
forming cells w/out cartilage
Bone tissue Ans: continuously being resorbed and synthesized
by bone-remodeling units of osteoclasts and osteoblasts
RANKL Ans: Receptor activator of nuclear factor kappa-B
ligand
includes osteoclast activation and bone resorption
OPG Ans: osteoprotegerin
protein. attachment serves as a decoy receptor for RANKL and
blocks osteoclast activity
decreases bone resorption.
RANKL and OPG balance Ans: Quality of bone
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Bone composition Ans: compact and spongy bone tissue.
compact bone Ans: highly organized into haversian systems
that consist of concentric layers of crystallized matrix
surrounding a central canal that contains blood vessels and
nerves.
crystallized matrix in compact bone Ans: has concentric layers
with small spaces containing osteocytes. Canaliculi inter
connect the osteocyte space.
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crystallized matrix in spongy bone Ans: arranged in bars or
plates. spaces containing osteocytes are dispersed between the
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bars or plates and interconnected by canaliculi
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BMPs (bone morphogenic proteins) Ans: involved in multiple
crucial functions in the skeletal system
how many bones in the body Ans: 206
divided into axial skeleton and appendicular skeleton
Bone Classification Ans: long, short, flat, irregular
long bones Ans: longer than they are wide. broad end called
epiphysis, broad neck called metaphysis, and narrow
midportion called diaphysis that contains the medullar cavity.
Hematoma Ans: formation provides the fibrin framework for
formation and organization of granulation tissues
granulation tissue Ans: provides a cartilage model for the
formation and crystallization of bone matrix
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Remodeling Ans: restores the original shape and size to
injured bone
joint Ans: site of attachment of 2 or more bones.
provide stability and mobility of the skeleton
Help move bones and muscle
joint classification Ans: synarthroses, amphiarthroses,
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diarthroses
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depends on degree of movement allowed
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fibrous joints Ans: connected by dense fibrous tissue,
ligaments, or membranes
cartilaginous joints Ans: connected by fibrocartilage or hyaline
cartilage
synovial joints Ans: connected by a fibrous joint capsule.
small fluid filled space in capsule. Space nourishes the
articular cartilage that covers the end of the bones meeting in
the synovial joint
articular cartilage Ans: highly organized system of collagen
fibers and proteoglycans. fibers firmly anchor the cartilage to
the bone, and the proteoglycans control the loss of fluid from
the cartilage
skeletal muscle Ans: A muscle that is attached to the bones of
the skeleton and provides the force that moves the bones.
largest organ in the body made up of millions of fibers