Lecture Exam 3 Flashcards
(200 cards)
What does ‘radi/o’ refer to?
radiation (ray)
What does the suffix –dipsia mean?
thirst
What does the suffix –tropic mean?
pertaining to stimulating
What does the suffix –tropin mean?
to stimulate
What are the two types of pancreatic functions?
Endocrine (hormones) and exocrine (digestive enzymes)
What does insulin do?
Lowers blood sugar by helping cells take in glucose
What does glucagon do?
Raises blood sugar by signaling the liver to release glucose
Where are the parathyroid glands located?
On the back (dorsal) surface of the thyroid gland
What hormone do the parathyroids secrete and what does it do?
PTH (parathyroid hormone); increases blood calcium by stimulating bone breakdown
What hormone does the pineal gland secrete?
melatonin
What does melatonin do?
Helps regulate the circadian rhythm (sleep-wake cycle)
Where is the pituitary gland located and why is it called the “master gland”?
Beneath the brain; it controls many other endocrine glands
What are the two lobes of the pituitary gland?
anterior and posterior
What does prolactin (PRL) do?
stimulates milk production after childbirth
What is the role of follicle-stimulating hormone (FSH)?
Helps develop sex cells in both genders and promotes estrogen secretion in females
What is the function of luteinizing hormone (LH)?
Triggers sex hormone secretion in both genders and ovulation in females
What does melanocyte-stimulating hormone (MSH) do?
Stimulates melanocytes to produce melanin (pigment)
What does antidiuretic hormone (ADH) do?
Promotes water reabsorption in the kidneys
What is the role of oxytocin?
Stimulates uterine contractions and milk release after childbirth
Where are the testes located and what do they produce?
In the male scrotum; they produce sperm and testosterone
What are two roles of testosterone?
Development of male secondary sex characteristics and regulation of sperm production
What dual roles does the thymus play?
Endocrine (secretes thymosin) and immune (develops newborn immunity)
What happens to the thymus after puberty?
It shrinks and is replaced with connective and fat tissue
Where is the thyroid located and what is its shape?
On either side of the trachea; butterfly-shaped