pretest 2002 endocrine p243-285 Flashcards
Parathyroid hormone (PTH) is accurately described that it is
essential for life
The supraoptic nucleus of the hypothalamus is believed to control secretion of
ADH
When a person is in the fasting state, basal metabolic rate (BMR)
decreases
True/False: Regarding atrial natriuretic hormone (ANH) is inhibits aldosterone secretion.
True
True/False: Regarding spermatogenesis, Sertoli cells are required for mitotic and meiotic activity of germ cells
True
The secretion of growth hormone is increased by
exercise
the source of estrogen and progesterone during the first two months of pregnancy is the
corpus luteum
the source of estrogen and progesterone during the last seven months of pregnancy is the
placenta
what hormones is secreted by the posterior pituitary gland?
Oxytocin and ADH
True/False: Regarding prolactin, its secretion is tonically inhibited by the hypothalamus
True
The principal steroid secreted by the fetal adrenal cortex is
Dehydroepiandrosterone
The effect of insulin on glucose transport is to
enhance transport into adipocytes
compared with the resting state, during prolonged exercise, the caloric needs of skeletal muscle are met by an increase in
hepatic glycogenolysis
Iodides are stored in the thyroid follicles mainly in the form of
thyroglobulin
Almost all of the active thyroid hormone entering the circulation is in the form of
thyroxine
Physiologically active thyroxine exists in what form?
Unbound
Ovulation is caused by sudden increase in the secretion of
LH
Activation of hormone-sensitive lipase in adipocytes is mediated by
a cyclic AMP-dependent protein kinase
True/False: Regarding the production of human sperm FSH is required
True
Functions of the Sertoli cells in the seminiferous tubules include
maintenance of the blood-testis barrier
An indication that ovulation has taken place is an increase
in serum progesterone levels
The hormone involved in the ejection of milk from a lactating mammary gland is
oxytocin
Plasma levels of calcium can be increased most rapidly by the direct action of parathyroid hormone on the
bones
True/False: Regarding human growth hormone, it stimulates production of somatomedins by the liver
True
The basic effects of growth hormone on body metabolism
increase the use of fats for energy
True/False: Regarding the actions of glucagon, it stimulates gluconeogenesis in the liver
True
The actions of insulin include enhancing
potassium entry into cells
Injection of thyroid hormone into a human subject will increase
muscle protein synthesis
The effects of primary hyperaldosteronism (Conn’s syndrome) include
hypokalemia
Hyperparathyroidism decreases the plasma levels of
Phosphate
Adrenalectomy is associated with
Hyperglycemia with decreased insulin sensitivity
Hyperthyroidism is characterized by
increased basal metabolic rate
Insulin-independent glucose uptake occurs in
the brain
True/False: Iron is transported in the blood bound to transferrin
True
The actions of angiotensin II include
initiation of thirst
A person with hypothyroidism would explain
sleepiness
The islets of Langerhans secrete
insulin and glucagon
Progesterone is secreted by
the corpus luteum
The anti-inflammatory effect of cortisol treatment is thought to be due to
stabilization of cellular lysosomal membranes
Administration of estrogens in women will
produce cyclic changes in the vagina and endometrium
The gastrointestinal hormone involved in initiation of migrating motor complexes is
motilin
The principal androgen responsible for transforming undifferentiaed fetal external genitalia into male external genitalia is
dihydrotestoterone
