Integumentary system Flashcards
at what point after fertilization do we call the conception a zygote?
when the male and female pronuclei fuse together
the zygote splits into two what
blastomeres
the process of dividing is by what
mitosis
what does emroblast divide into
epiblast and hypoblast
hair cells originate from what
ectoderm
sweat glands originae from what
ectoderm
arrector pilli (muscle by hair muscle) originate from what
VLPM
where does arteries and veins in skin originate from
VLPM
the majority of epidermis cells are what
keratinocytes
what does ectoderm give rise to
periderm & basal layer
what is periderm used as
protection
when is periderm sloughed off
week 21
what does the basal layer give rise to
intermediate layer
stratum germativum
what does the intermediate layer give rise to
stratum corneum, lucidum, granulosum, spinosum
once the layers of skin are formed what happens to intermediate layer
it goes away
