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30 Cards in this Set

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Target Cell
Cells that have a receptor that will be affected by the hormone
Hormone
Substances that affect the activity of other cells
Effective in low concentrations
Steroid Hormones
From Cholesterol, Diffuse through cell membrane, Bind to receptor, Enters nucleus, Binds to DNA, Activates specific genes, Makes and moves mRNA to cytoplasm, Makes proteins
Nonsteroid Hormones
Attaches to binding site, Activates activity site to activate membrane proteins, Activate secondary messengers, Initiate reactions inside which stimulate cellular change
Prostaglandins
Stimulate release of hormones from adrenal gland
Inhibit acid secretion in stomach
Smooth muscle relaxation and contraction
Negative Feedback
A gland's secretory activity is inhibited when a substances concentration reaches a certain level
Nerve Control
Adrenal Gland and Hypothalamus
Secrete hormones in response to impulses from the nervous system
Pituitary Gland
Attached to hypothalamus by the pituitary stalk, Consists of 2 lobes (Anterior and Posterior)
Anterior Pituitary
Secretes growth hormone, prolactin, TSH, adrenocorticotropic hormone, follicle stimulating hormone, luteinizing hormone
Growth Hormone (GH)
Stimulates cells to increase in size and divide rapidly
Dwarfism, too little in childhood
Gigantism- too much in childhood
Prolactin
Milk production in females postpartum
Thyroid Stimulating Hormone (TSH)
Stimulates secretion of thyroxine from the Thyroid gland
Adrenocorticotropic Hormone (ACTH)
Stimulates the adrenal cortex to secrete hormones
Aldosterone
Increases sodium reabsorption in the kidney, increasing blood volume and blood pressure
Cortisol
Anti-inflammatory action, inhibits protein synthesis, stimulates synthesis of glucose, promotes use of fatty acids as an energy source
Sex Hormones
Testosterone and Estrogen
T- Required for sperm production
E- Develops female secondary sex characteristics
Follicle Stimulating Hormone (FSH)
Stimulates development of mature ovum during each menstrual cycle, promotes estrogen secretion
Luteinizing Hormone (LH)
Triggers ovulation, promotes secretion of estrogen and progesterone
Posterior Pituitary Hormones
ADH. Oxytocin
Anti-Diuretic Hormone (ADH)
Reduces amount of urine excreted by the kidneys
Oxytocin
Triggers uterine contractions and secretion of milk during breastfeeding
Thyroid Hormone
Thyroxine, calcitonin, parathyroid hormone
Thyroxine
Increases metabolic rate
Calcitonin
Lowers blood calcium levels
Parathyroid Hormone (PTH)
Raises blood calcium levels
Adrenal Cortex Hormones
Aldosterone, cortisol, sex hormones
Adrenal Medulla Hormones
Epinephrine
Epinephrine
Increase heart rate, increases blood pressure, increases breathing rate, slows digestion
Fight or Flight response
Pancreas Hormones
Insulin
Insulin-Glucagon Feedback Loop
Eat, blood glucose increases, pancreas releases insulin, insulin promotes movement of glucose into cells, glucose level decreases, insulin secretion is inhibited, low blood glucose stimulates release of glucagons, blood glucose increases and cycle repeats