Hormones Flashcards
Pineal Gland Hormones
Melatonin
Melatonin
Induces sleep
Thymus Gland Hormones
Thymosin
Thymosin
Stimulates T-cell Development
Thyroid Gland Hormones
T3 Triiodothyronine
T4 Tetraiodothyronine
Calcitonin
T3 & T4
Increase basal metabolic rate
Calcitonin
Causes the modeling of bone and decreases Ca levels in the blood
Parathyroid Gland Hormones
PTH
PTH
Causes the resorption of bone and increases Ca levels in the blood
Adrenal Cortex Hormones
Cortisol
Sex steroids
Cortisol
Responds to stress long-term, increases blood glucose, protein catabolism, decreases inflammation
Adrenal Medulla Hormones
Epinephrine
Aldosterone
Epinephrine
Rapid sympathetic stress response
Aldosterone
Increases sodium reabsorption to increase BP
Pancreas Hormones
Glucagon (alpha cells)
Insulin (beta cells)
Somatostatin (delta cells)
Glucagon
Results in an increase in blood glucose and decrease in glycogen and fat storage
Insulin
Results in a decrease in blood glucose and increase in glycogen and fat storage;
Somatostatin
Inhibits glucagon and insulin secretion
Ovarian Hormones
Estrogen
Progesterone
Estrogen
Develops secondary sexual characteristics
Progesterone
Develops the endometrium
Testicular Hormones
Testosterone
Testosterone
Develops secondary sexual characteristics
Anterior Pituitary Hormones
Growth Hormone Prolactin TSH ACTH LH FSH
Growth Hormone
Increases bone and muscle growth, increases basal metabolic rate
Prolactin
Milk production
Thyroid Stimulating Hormone
Increases synthesis and release of thyroid hormone
Adrenocorticotropic Hormone
Increases growth and secretory activity of adrenal cortex
Luteinizing Hormone
Ovulation or Testosterone synthesis
Follicle-Stimulating Hormone
Follicle development or spermatogenesis
Posterior Pituitary Hormones
ADH
Oxytocin
Antidiuretic Hormone
Water retention
Oxytocin
Milk letdown and uterine contractions
Heart Hormones
Atrial Natriuretic Factor (ANF)
Atrial Natriuretic Factor
Increases urination to decrease BP
Kidney Hormones
Erythropoietin (acts on bone marrow)
Erythropoietin
Increases RBC synthesis
Hypothalamus Hormones
[Hypothalamic-adenohypophyseal axis]
Thyrotropin-releasing Hormone Gonadotropin-releasing Hormone Corticotropin-releasing Hormone Somatostatin Dopamine
Thyrotropin-Releasing Hormone
[Target: Thyroid]
Stimulates the release of TSH & Prolactin
Corticotropin-Releasing Hormone
[Target: Adrenal Cortex]
Stimulate the release of ACTH
Gonadotropin-Releasing Hormone
[Target: Gonads]
Stimulate the release of FSH and LH
Dopamine
[Target: Breast Tissue]
Inhibit prolactin release;
*Decrease in dopamine promotes prolactin secretion
Thyrotropin-Releasing Hormone
Stimulates the release of TSH & Prolactin
Corticotropin-Releasing Hormone
Stimulate the release of ACTH
Gonadotropin-Releasing Hormone
Stimulate the release of FSH and LH
Dopamine
Inhibit prolactin release; decrease in dopamine promotes prolactin secretion
Dopamine
Inhibit prolactin release
Somatostatin
Inhibit GH, TSH
Hypothalamus Hormones
[Hypothalamic-Neurohypophyseal Axis]
Oxytocin
Vasopressin
Oxytocin
Uterine contraction and lactation (letdown)
Vasopressin (ADH)
Increases the permeability to water of the distal tubule and collecting duct; increases water reabsorption and excretion of concentrated urine
Secretin
Regulates water homeostasis
Cholecystokinin
Stimulates digestion of fat and proteins
Ghrelin
Regulates hunger and energy usage
Leptin
Inhibits hunger and energy balance
Gastrin
Cleaves large proteins into smaller peptides
Trophic Hormones
Has a growth effect on the tissues they stimulate
Tropic Hormones
Have other endocrine glands as their target
Hormone Chemical Precursor
Peptide: Amino Acids/Polypeptides
Steroid: Cholesterol
Hormone Location of Receptor
Peptide: Extracellular
Steroid: Intracellular or Intranuclear
Hormone Mechanism of Action
Peptide: Stimulates an extracellular receptor affecting levels of a second messenger [cAMP]; initiates signal cascade
Steroid: Binds to a receptor, induces conformational changes and regulates transcription at the level of DNA
Hormone Method of Travel in Bloodstream
Peptide: Dissolves & travels freely
Steroid: Binds to a carrier protein
Hormone Rapidness of Onset
Peptide: Quick
Steroid: Slow
Hormone Duration of Action
Peptide: Short-lived
Steroid: Long-lived
Hormone Duration of Action
Peptide: Short-lived
Steroid: Long-lived
Parafollicular Cells
Calcitonin
Adrenal Medulla
Catecholamines includes Epinephrine and Norepinephrine
Pancreatic Alpha Cells
Glucagon
Pancreatic Beta Cells
Insulin
Pancreatic Delta Cells
Somatostatin
Posterior Pituitary
ADH/Vasopressin
Oxytocin
Adrenal Cortex
Aldosterone (Mineralocorticoids)