Summary: Endocrine System 5
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1.26 endocrine system 5
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thyroid axis of control process
hypothalamus
releasing hormones
anterior pituitary
release thyroid-stimulating hormone
thyroid gland
thyroid hormone -
gonadal axis process
hypothalamus
releasing hormone
anterior pituitary
lutienizing and follicle-stimulating hormones
testes and ovaries
testosterone and ovaries
estrogen and progesterone -
found at the base of the throat, wrapped around the trachea
thyroid gland -
consists of two lobes and a connecting isthmus
thyroid gland -
thyroid hormones composition
two linked tyrosine with 3 or 4 iodine atoms -
majority of released thyroid hormone is
T4 -
at targeted issues, T4 is converted to
T3 because its more active -
thyroid hormone and metabolic rate relationship
direct (up for up, down for down) -
thyroid hormone effects
drives metabolic rate
break down of large molecules
increase small molecule consumption
important in embryo, fetus, and early childhood development
have to be with sec hormones to affect reproductive systems -
goiters, cretinism, hypothyroidism, and hyperthyroidism are
thyroid disorders
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