Chapter 13 Flashcards
endocrine glands
ductless glands that release chemicals called hormones directly into the circulatory system
exocrine glands
glands that release chemicals into ducts that carry them to targets, mostly on the surface of the body
hormones
chemicals released by the endocrine system directly into the circulatory system
gonads
the testes and the ovaries
testes
the male gonads
ovaries
the female gonads
copulation
sexual intercourse
sperm cells
cells produced in the testes
ova
produced in the ovaries
sex chromosomes
the pair of chromosomes that determine an individual’s sex: XX for a female and XY for a male
X chromosomes
the large sex chromosones; females have two, males have one
Y chromosome
half of the sex chromosomes in males
amino acid derivative hormones
hormones that are synthesized in a few simple steps from amino acids
peptide hormones
hormones that are short chains of amino acids
protein hormones
hormones that are long chains of amino acids
steroid hormones
hormones that are synthesized from cholesterol
estrogens
the class of steroid hormones that are released in large amounts by the ovaries
androgens
the class of steroid hormones that includes testosterone
testosterone
the most common androgen
estradiol
the most common estrogen
progestins
the class of steroid hormones that includes progesterone
progesterone
a progestin that prepares the uterus and breasts fpr pregnancy
adrenal cortex
the outer layer of the adrenal glands, which releases glucocorticoics in response to stressors, as well as steroid hormones in small amounts
master gland
aka the pituitary gland
tropic hormones
the primary function is the influence the release of hormones from other glands
gonadotropin
the pituitary tropic hormone that stimulates the release of hormones from the gonads
posterior pituitary
the part of the pituitary gland that contains the terminals of hypothalamic neurons
pituitary stalk
the structure connecting the hypothalamus and the pituitary gland
anterior pituitary
the part of the pituitary gland that releases trpic hormones
menstrual cycle
the hormone-regulated cycle in women of follicle growth, egg release, buildup of the uterus lining, and menstruation
vasopressin
one of the two major peptide hormones of the posterior pituitary; it facilitates reabsorption of water by kidneys and is thus also called antidiuretic hormone
oxytocin
one of the two major peptide hormones of the posterior pituitary, which in femals stimulates contractions of the uterus during labor and the ejaculation of milk during suckling
paraventricular nuclei
hypothalamic nuclei that play a role in eating and synthesize hormones released by the posterior pituitary
supraoptic nuclei
hypothalamic nuclei in which the hormones of the posterior pituitary are synthesized
neurosecretory cells
neurons that release hormones into general circulation
antidiuretic hormone
aka vasopressin
hypothalamopituitary portal system
the vascular network that carries hormones from the hypothalamus to the anterior pituitary
portal vein
a vein that connects one capillary network with another
releasing hormone
hypothalamic hormones that stimulate the release of hormones from the anterior pituitary
release inhibiting hormones
hypothalamic hormones that inhibit the release of hormones from the anterior pituitary
thyotropin releasing hormone
the hypothalamic hormone that stimulates the release of thyrptropin from the anterior pituitary
thyrotropin
the anterior pituitary hormone that stimulates the release of hormones from the thyroid gland
thyroid gland
one of the largest endocrine glands that releases hormones
gonadotropin-releasing hormone
the hypothalamic releasing hormone that controls the release of two gonadotropic hormones from the anterior pituitary