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GCU BIO-201 Exam 2 Test Questions and Answers Graded A+
What are the 5 layers of the skin?
(From deep to superficial)
Stratum basale
Stratum spinosum
Stratum granulosum
Stratum lucidum (only in palms and soles of feet)
Stratum Corneum
What causes osteoporosis?
Deficiency
of
calcium
What hormone is released when CA levels are too high?
Calcitonin (*Think "can tone it down")
What hormone(s) is released when CA levels are too low?
Parathyroid & Calcitriol
Whats
the
ditterence
between
Appositional
growth
&
Epi-
physeal growth?
Appositional grows in width
Epiphyseal grows in length
What do ligament do?
Attach
bone
to
bone
What do tendons do?
Attach bone to muscle
What is bone formation called?
Osteogenesis
What happens when growing stops?
Epiphyseal plate ossifies
What is ossification?
Hardening
The metatarsophalangeal joint is associated with what
small bone?
Sesamoid
bone
(ex
Patella)
What
part
of
bone
do
tendons
&
ligaments
attach
to?
Periosteum
What vessels can be found in Haversian & Volkmann's
canals?
Artery,
Vein,
&
Lymph
What does the matrix of spongy bone look like?
Open network of trabeculae
What is 1/3 of Osseous tissue composed of?
CA ions
What
type
of
bone
cell
resides
in
endosteum?
Osteoclasts
What are osteocytes?
Most common cell in bone
Where are osteocytes held?
In the Lacunae
What
is
the
process
when
mesenchyme
cells
ditterentiate?
Intramembranous
ossification
