WGU D446 ENDOCRINE SYSTEM
CERTIFICATION SCRIPT 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◍ what hormones do kidneys secrete?.
Answer: - erythropoietin- renin
◍ pituitary dwarfism.
Answer: - hyposecretion of GH- significantly below average growth
◍ parathyroid gland.
Answer: - lie on posterior surface of thyroid gland- chief cells make
parathyroid hormone (PTH)- increase blood calcium levels- activate
osteoclasts/inhibit osteoblasts
◍ erythropoietin.
Answer: - secreted when blood O2 is low- increases RBC production-
protects RBC
◍ when is your thymus largest in your life?.
Answer: biggest in childhood and starts shrinking at puberty. replaced by fat
tissue by age 75
◍ Parathyroid Gland.
Answer: -Two pairs on back of thyroid-Raises calcium balance in body
◍ Pituitary gland.
Answer: -"Master gland" that activates other glands-Responsible for growth
hormone (GH)-Regulates blood pressure and water balance
◍ hormones.
Answer: - chemical messengers- transported in circulatory system
throughout body- only affect target cells- can have different effects on
, different target cells
◍ Do most of our own organs release hormones?.
Answer: yes
◍ gonads.
Answer: - male and female primary sex organs- testes and ovaries
◍ how is posterior pituitary gland (neurohypophysis) hypothalamic control
connected?.
Answer: connected to hypothalamus via hypothalamo-hypophyseal tract
◍ posterior pituitary gland.
Answer: - pars nervosa- infundibulum- stores and releases hormones
produced by the hypothalamus- does not produce hormones
◍ 2nd step of thyroid gland-pituitary gland negative feed back loop.
Answer: thyrotropic cells in the anterior pituitary release thyroid stimulating
hormone (TSH)
◍ luteinizing hormone (LH).
Answer: - stimulates testosterone and estrogen production in gonads-
stimulates ovulation in females
◍ describe how TSH flows.
Answer: TSHRH (hypothalamus) -> TSH (APG) -> TH (thyroid)
◍ diabetes mellitus.
Answer: - inadequate uptake of glucose from the blood- hyperglycemia(high
blood glucose)
◍ Thymus.
Answer: -Located behind the sternum in the chest-Important for immune
system response
◍ glucocorticoids.
Answer: - zona fasciculata- deal with stressful situations and tissue repair
◍ pancreas.
CERTIFICATION SCRIPT 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◍ what hormones do kidneys secrete?.
Answer: - erythropoietin- renin
◍ pituitary dwarfism.
Answer: - hyposecretion of GH- significantly below average growth
◍ parathyroid gland.
Answer: - lie on posterior surface of thyroid gland- chief cells make
parathyroid hormone (PTH)- increase blood calcium levels- activate
osteoclasts/inhibit osteoblasts
◍ erythropoietin.
Answer: - secreted when blood O2 is low- increases RBC production-
protects RBC
◍ when is your thymus largest in your life?.
Answer: biggest in childhood and starts shrinking at puberty. replaced by fat
tissue by age 75
◍ Parathyroid Gland.
Answer: -Two pairs on back of thyroid-Raises calcium balance in body
◍ Pituitary gland.
Answer: -"Master gland" that activates other glands-Responsible for growth
hormone (GH)-Regulates blood pressure and water balance
◍ hormones.
Answer: - chemical messengers- transported in circulatory system
throughout body- only affect target cells- can have different effects on
, different target cells
◍ Do most of our own organs release hormones?.
Answer: yes
◍ gonads.
Answer: - male and female primary sex organs- testes and ovaries
◍ how is posterior pituitary gland (neurohypophysis) hypothalamic control
connected?.
Answer: connected to hypothalamus via hypothalamo-hypophyseal tract
◍ posterior pituitary gland.
Answer: - pars nervosa- infundibulum- stores and releases hormones
produced by the hypothalamus- does not produce hormones
◍ 2nd step of thyroid gland-pituitary gland negative feed back loop.
Answer: thyrotropic cells in the anterior pituitary release thyroid stimulating
hormone (TSH)
◍ luteinizing hormone (LH).
Answer: - stimulates testosterone and estrogen production in gonads-
stimulates ovulation in females
◍ describe how TSH flows.
Answer: TSHRH (hypothalamus) -> TSH (APG) -> TH (thyroid)
◍ diabetes mellitus.
Answer: - inadequate uptake of glucose from the blood- hyperglycemia(high
blood glucose)
◍ Thymus.
Answer: -Located behind the sternum in the chest-Important for immune
system response
◍ glucocorticoids.
Answer: - zona fasciculata- deal with stressful situations and tissue repair
◍ pancreas.
