WGU D446 ENDOCRINE SYSTEM HOURLY
ROUNDS RESULTS COMPLETE ASSESSMENT
WITH CORRECT ANSWERS
◉ When cortisol is elevated.
Answer: negative feedback will cause CRF and ACTH levels to be
reduced
◉ Why is administering steroids a bad thing?.
Answer: they mimic the effects of cortisol can cause negative
feedback and will make the adrenal glands atrophy
◉ Follicle Stimulating Hormone (FSH).
Answer: Females: stimulates growth/development of ovarian
follicles; also stimulates the cells lining the follicles to
produce/secrete estrogen; used to superovulate
Males: stimulates spermatogenesis in the testes
◉ Luteinizing Hormone (LH).
Answer: completes follicular development in ovary; increased
amounts of estrogen feedback to the anterior pituitary and cause
reduced production of FSH and increased produced of LH; LH levels
reach a peak when follicle is fully mature (causes ovulation)
, Males: LH stimulates interstitial cells to produce testosterone
◉ Antidiuretic Hormone (ADH).
Answer: reduces urine volume, prevents diuresis; receptors detect
changes in concentration of blood (due to dehydration-
hemoconcentration); release of ADH causes kidneys to reabsorb
more water from urine and return it back to bloodstream; urine
becomes more concentrated; ADH deficiency causes Diabetes
Insipidus (PU/PD occurs)
◉ Oxytocin.
Answer: Positive feedback; effect on uterus: contraction during
breeding and parturition, helps to transport spermatozoa to oviduct,
causes delivery of fetus and placenta; Effect on mammary glands:
stimulation of teat/nipple by nursing or milking causes oxytocin
release into bloodstream
◉ Milk letdown.
Answer: causes contraction of myoepithelial cells around mammary
gland alveoli and small ducts. This forces milk into lower parts of
gland, making it acceptable
◉ Thyroid Gland.
ROUNDS RESULTS COMPLETE ASSESSMENT
WITH CORRECT ANSWERS
◉ When cortisol is elevated.
Answer: negative feedback will cause CRF and ACTH levels to be
reduced
◉ Why is administering steroids a bad thing?.
Answer: they mimic the effects of cortisol can cause negative
feedback and will make the adrenal glands atrophy
◉ Follicle Stimulating Hormone (FSH).
Answer: Females: stimulates growth/development of ovarian
follicles; also stimulates the cells lining the follicles to
produce/secrete estrogen; used to superovulate
Males: stimulates spermatogenesis in the testes
◉ Luteinizing Hormone (LH).
Answer: completes follicular development in ovary; increased
amounts of estrogen feedback to the anterior pituitary and cause
reduced production of FSH and increased produced of LH; LH levels
reach a peak when follicle is fully mature (causes ovulation)
, Males: LH stimulates interstitial cells to produce testosterone
◉ Antidiuretic Hormone (ADH).
Answer: reduces urine volume, prevents diuresis; receptors detect
changes in concentration of blood (due to dehydration-
hemoconcentration); release of ADH causes kidneys to reabsorb
more water from urine and return it back to bloodstream; urine
becomes more concentrated; ADH deficiency causes Diabetes
Insipidus (PU/PD occurs)
◉ Oxytocin.
Answer: Positive feedback; effect on uterus: contraction during
breeding and parturition, helps to transport spermatozoa to oviduct,
causes delivery of fetus and placenta; Effect on mammary glands:
stimulation of teat/nipple by nursing or milking causes oxytocin
release into bloodstream
◉ Milk letdown.
Answer: causes contraction of myoepithelial cells around mammary
gland alveoli and small ducts. This forces milk into lower parts of
gland, making it acceptable
◉ Thyroid Gland.
