WGU D446 ENDOCRINE SYSTEM HOURLY
ROUNDS RESULTS QUESTIONS AND CORRECT
ANSWERS
◉ what does the endocrine system work together with?
Answer: nervous system to maintain homeostasis
◉ Hormones
Answer: chemical messengers produced by endocrine glands;
absorbed into blood vessels and will contact all cells of the body;
only produces effects on cells containing specific receptors
◉ Target cell
Answer: "lock and key" arrangement causes a change in activity of
target cell; growth hormone: all cells; Prolactin: mammary tissue
◉ Control of hormone secretion
Answer: negative feedback system (like a thermostat)
◉ If hormone level is low:
Answer: appropriate endocrine gland is stimulated to produce more
hormone
,◉ If adequate hormone concentration is attained in the
bloodstream:
Answer: stimulation of endocrine gland is reduced and production
of the hormone is stopped/reduced (negative feedback)
◉ hypothalamus
Answer: part of diencephalon; controls activities of pituitary gland;
portal system of blood vessels links hypothalamus with anterior
portion of pituitary gland
◉ neurosecretory cells
Answer: in hypothalamus that secrete releasing and inhibiting
hormones into portal blood vessels into anterior pituitary gland
◉ 6 hormones made by anterior pituitary gland
Answer: growth hormone; thyroid stimulating hormone (TSH);
Follicle Stimulating hormone (FSH); Luteinizing hormone (LH);
prolactin; adrenocorticotropic hormone (ACTH)
◉ posterior pituitary gland storage
Answer: does not make hormones but stores oxytocin and
Antidiuretic hormone (ADH)
, ◉ oxytocin and Antidiuretic hormone (ADH)
Answer: modified neurons in hypothalamus secrete them;
transported to posterior pituitary (along neurons) for storage
◉ anterior pituitary
Answer: adenohypophysis; rostral portion; composed of glandular
tissue; produces hormones
◉ posterior pituitary
Answer: neurohypophysis; caudal portion; composed of
neurosecretory cells; stores and releases hormones produced in
hypothalamus
◉ Growth Hormone (GH)
Answer: promotes bone and muscle growth in young animals but
targets all cells; regulates metabolism of proteins, carbohydrates,
and lipids; protein are synthesized via anabolism; lipids are released
from storage and go through catabolism for energy
◉ hyperglycemic effect
Answer: since Growth hormone promotes the use of lipids for
energy, glucose accumulates in the blood; animal has to have a
normal production of insulin to counteract hyperglycemia
ROUNDS RESULTS QUESTIONS AND CORRECT
ANSWERS
◉ what does the endocrine system work together with?
Answer: nervous system to maintain homeostasis
◉ Hormones
Answer: chemical messengers produced by endocrine glands;
absorbed into blood vessels and will contact all cells of the body;
only produces effects on cells containing specific receptors
◉ Target cell
Answer: "lock and key" arrangement causes a change in activity of
target cell; growth hormone: all cells; Prolactin: mammary tissue
◉ Control of hormone secretion
Answer: negative feedback system (like a thermostat)
◉ If hormone level is low:
Answer: appropriate endocrine gland is stimulated to produce more
hormone
,◉ If adequate hormone concentration is attained in the
bloodstream:
Answer: stimulation of endocrine gland is reduced and production
of the hormone is stopped/reduced (negative feedback)
◉ hypothalamus
Answer: part of diencephalon; controls activities of pituitary gland;
portal system of blood vessels links hypothalamus with anterior
portion of pituitary gland
◉ neurosecretory cells
Answer: in hypothalamus that secrete releasing and inhibiting
hormones into portal blood vessels into anterior pituitary gland
◉ 6 hormones made by anterior pituitary gland
Answer: growth hormone; thyroid stimulating hormone (TSH);
Follicle Stimulating hormone (FSH); Luteinizing hormone (LH);
prolactin; adrenocorticotropic hormone (ACTH)
◉ posterior pituitary gland storage
Answer: does not make hormones but stores oxytocin and
Antidiuretic hormone (ADH)
, ◉ oxytocin and Antidiuretic hormone (ADH)
Answer: modified neurons in hypothalamus secrete them;
transported to posterior pituitary (along neurons) for storage
◉ anterior pituitary
Answer: adenohypophysis; rostral portion; composed of glandular
tissue; produces hormones
◉ posterior pituitary
Answer: neurohypophysis; caudal portion; composed of
neurosecretory cells; stores and releases hormones produced in
hypothalamus
◉ Growth Hormone (GH)
Answer: promotes bone and muscle growth in young animals but
targets all cells; regulates metabolism of proteins, carbohydrates,
and lipids; protein are synthesized via anabolism; lipids are released
from storage and go through catabolism for energy
◉ hyperglycemic effect
Answer: since Growth hormone promotes the use of lipids for
energy, glucose accumulates in the blood; animal has to have a
normal production of insulin to counteract hyperglycemia
