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Developmental Biology Exam 3
With Dr Grimnes at Alma College
40
Biology
Undergraduate 2
12/11/2008

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Term
The layers of the brain from outside in
Definition
Skull, Duramater, Piamater, Marginal, mantle, ventricular, lumen
Term
Duramater
Definition
hard mother, fiberous and protective made of mesoderm
Term
piamater
Definition
soft mother, blood vessels, made of mesoderm
Term
marginal
Definition
whitematter, mylenated axons made of ectoderm
Term
mantle
Definition
greymatter, neurons and support cells made of neural ectoderm
Term
ventricular
Definition
dividing stem cell layer (become neurons)
Term
Axon wall
Definition
for support made from microtubules (cholchacine)
Term
growth cone
Definition
flexibility between cells, microfiliments (cytochalasine B)
Term
myelen sheaths
Definition
made from schawann cells
Term
where are the photoreceptors located relative to the neuronal wiring
Definition
beind it
Term
Rods
Definition
detect light intensity. (black and white vision)
Term
cones
Definition
red blue green
Term
dermis is formed from
Definition
mesoderm
Term
basal layer
Definition
rapid division of skin stem cells
Term
Stratum germinativum
Definition
basal layer
Term
spinous layer
Definition
pussing up and dividing
Term
granular layer
Definition
making keratin granules keratinocytes no cell division, cells begin to flatten
Term
horny layer
Definition
dead, for protection, totally flat and packed with keratin
Term
outermost layer, stratum cornelum
Definition
dead too
Term
Myogenesis
Definition
formation of muscles
Term
Myo D
Definition
transcription factor (binds to a promotor region
Term
What keeps myoblasts dividing
Definition
FGF's Growth factors
Term
what is the biggest difference between endochondrial bone formation and intramemberous
Definition
it's made from a cartelidge model
Term
fibroblast growth factor
Definition
cartelidge precursor cells become cartelidge cells
Term
Growth hormone
Definition
from anterior pituitary stimulates chondrocytes to divide
Term
Insulin like growth factors
Definition
growth factors that spurt at puberty
Term
estrogen receptors
Definition
shuts down bone growth
Term
parathyroid horomones
Definition
regulate calsium in the blood - promots osteoblasts
Term
Vitamin D
Definition
enhances the removal of calsium from digestion
Term
Growth of plants is tied to the parameters of their environment
Definition
sunlight, gravity, water, temperature
Term
Primary growth of plants is at the
Definition
meristem
Term
to meristems
Definition
apical shoot meristem and root meristem
Term
Secondary growth (annual thickening) is at the
Definition
cambium
Term
plant growth is
Definition
either determinant or indeterminante
Term
plant gastrulation
Definition
plants do not gastrulate
Term
elongation
Definition
is differentiation for some cells
Term
cell death
Definition
can lead to function
Term
apical dominance
Definition
terminal growing shoot supresses lateral shoots until terminal shoot is damaged
Term
Germ cells come from
Definition
somatic tissues which differentiate into flowers or other reproductive parts at the shotot tip
Term
corpus luteum
Definition
this is what folicle cells form after ovulation
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