growth control
Terms
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copy deck
- epiphyseal growth plates
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where lengthening of bones occur
b/w each end and the shaft of long bones - growth hormone acts on:
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liver
unspecialized precursors
differentiated cells - unspecialized precursors
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dividing cells
secrete IGF-1 locally; IGF-1 acts as paracrine agent - differentiated cells
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not dividing
increase protein sytnhesis; cause cells to become larger - plate closure
- cartilage turns into bone
- anabolic steroid
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effects differentiated cells; stimulates protein synthesis increasing their size, making them larger and larger
IN TESTOSTERONE
NOT IN ESTROGEN OR PROGESTERONE - IGF-2
- main hormone controlling rate of growth before birth
- placental lactogen
- decrease insulin sensitivity of mom's cells, causing increase in mom's glu and insulin levels
- gonads
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ovaries
testes - wolffian ducts
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degernates
vas deferens - mullerian ducts
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oviduct/uterus/vagina
degen - urogential sinus
- urethra
- genital tubercle
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clitoris
penis - urethral groove
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vestibule (open)
zips up to penis - urethral fold
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labia minora
penis - gential swelling
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labia majora
scrotum