Chapter 13 The Endocrine System A&P Flashcards
is the process through which the body maintains a constant internal environment
homeostasis
are chemical messengers that are secreted by endocrine glands directly into the blood stream
hormones
which produce hormones, do not have ducts
endocrine glands
what are the 13 glands that make up the Endocrine system
pituitary gland pineal gland thyroid gland thyroid gland parathyroid gland (4) thymus pancreas (pancreatic islets) adrenal glands (2) gonads (2)
or hypophysis, is a pea-sized gland that is divided into two parts, the anterior and posterior lobe
pituitary gland
what hormones are secreted by the anterior pituitary
adrenocorticotropic hormone (ACTH) follicle-stimulating hormone (FSH) growth hormone (GH) interstitial cell-stimulating hormone (ICSH) lactogenic (prolactin) hormone (LTH) luteinizing hormone (LH) melanocyte-stimulating hormone (MSH) thyroid-stimulating hormone (TSH)
stimulates the growth and secretions of the adrenal cortex
adrenocorticotropic hormone (ACTH)
stimulates the secretion of estrogens and the growth of ova in the ovaries of the female. in the male, it stimulates the production of sperm in the testicles
follicle-stimulating hormone (FSH)
also known as somatotropic hormone, regulates the growth of bone, muscle, and other body tissues
growth hormone (GH)
stimulates ovulation in females. in the male, it stimulates the secretion of testosterone
interstitial cell-stimulating hormone (ICSH) luteinizing hormone (LH)
also known as prolactin, stimulates and maintains the secretions of breast milk in the mother after childbirth
lactogenic hormone (LTH)
increases the production of melanin in melanocytes, thereby causing darkening of skin pigmentation
melanocyte-stimulating hormone (MSH)
stimulates the secretion of hormones by the thyroid gland
thyroid-stimulating hormone (TSH)
what two hormones are secreted by the posterior pituitary gland
antidiuretic (ADH)
oxytocin (OXT)
is secreted by the hypothalamus and stored and released in the pituitary gland, helps control blood pressure by reducing the amount of water that is excreted through the kidneys
antidiuretic (ADH)
stimulates uterine contractions during childbirth. stimulates flow of milk from mammary glands
oxytocin
is a very small endocrine gland, also known as the pineal body
pineal gland
influences the sleep-wakefullness portions of the circadian cycle
melatonin
refers to the biological functions that occur within a 24-hour period
circadian rhythm
lies on either side of the larynx, just below the thyroid cartilage
thyroid gland
describes all of the body processes involved in the body’s use of nutrients, including the rate at which they are used
metabolism
the hormones that regulate metabolism
thyroxine (T4)
triiodothyronine (T3)
produced by the thyroid gland, is a hormone that works with the parathyroid hormone to decrease calcium levels in the blood
calcitonin
each of which is about the size of a grain of rice, are embedded in the posterior surface of the thyroid
parathyroid glands
works with the hormone calcitonin that is secreted by the thyroid gland
parathyroid hormone (PTH)
is located near the midline in the anterior portion of the thoracic cavity
thymus
plays an important part in the immune system by stimulating the maturation of lymphocytes into T cells
thymosin
is a feather shaped organ located posterior to the stomach that functions as part of both the digestive and the endocrine systems
pancreas