Exam 3: Endocrine Function Alterations Flashcards
Endocrine System plays a vital role in:
Orchestrating cellular interactions, metabolism, growth, reproduction, aging, and response to adverse conditions
Coordinating/regulating long term changes in fxn of all body organs and tissues to maintain homeostasis
Endocrine involves a ___ ___ system
Negative Feedback System
4 categories of hormones
Amines and amino acids
Peptide (protein): act on cell surface
Steroid: act inside the cell
Fatty acid derivative
Major Hormone Secreting Glands
Hypothalamus
Pineal
Pituitary
Thyroid
Parathyroid
Adrenals
Islets of Langerhans (Pancreas)
Posterior Pituitary Gland
Regulates fluid balance, facilitates childbirth, and prostate gland function
What 2 hormones does the Posterior Pituitary release?
ADH/Vasopressin
Oxytocin
Anterior Pituitary Gland
Produces and release several different hormones (most of which regulate secretion of other hormones)
Important Anterior Pituitary Hormone
TSH - Thyroid Stimulating Hormone
Stimulates the thyroid gland which will then determine the rate of cellular metabolism
Thyroid Gland
Determines rate of CELLULAR METABOLISM
In children, hormones are responsible for normal development of skeletal, muscular, and nervous system
Thyroid Hormones
ACTH - Adrenocorticotropic Hormone
FSH - Follicle Stimulating Hormone
LH - Luteinizing Hormone
PRL - Prolactin
GH - Growth Hormone
Calcitonin
Thyroxine (T4) and Triiodothyronine (T3)
Parathyroid Glands
Monitor and maintain circulating concentration of CALCIUM IONS
Pancreas
Endocrine Gland AND Organ
REGULATES BLOOD GLUCOSE concentrations and is associated with DM
Adrenal Medulla
INCREASES CELLULAR ENERGY USE and muscular strength, endurance, and mobilizes energy reserves
What hormones does the Arenal Medulla Release?
Catecholamines (EP & NEP)
Mobilized glycogen reserves
Adrenal Cortex
Hormones that play a vital role for bodies survival and affects metabolism of many different tissues
Adrenal Cortex Hormones
Glucocorticoids: cortisol, corticosterone, etc
Female Gonads and Hormones
Regulates secondary sexual characteristics and reproduction
Ovaries (Gonads)
Estrogen (Hormones)
Male Gonads and Hormones
Regulate secondary sexual characteristics and reproduction
Testes (Gonads)
Androgens and FSH (Hormones)
Common Lab Tests for Endocrine Disorders
Pituitary - GH and water deprivation test
Thyroid - TSH, T3, T4
Parathyroid - Serum calcium and Phosphate
Adrenal - Cortisol, Aldosterone, Urinary 17 Ketosteroids
Urine Tests
Measure the amount of hormones or end products of hormones excreted by the kidneys
Stimulation Tests/Suppression Tests
Diagnostic tests for endocrine disorders
Endocrine Imaging Studies
MRI
CT
Thyroid Scan
Radioactive Iodine (RAI) Uptake Test
Purpose of the POSTERIOR Pituitary Gland
Regulate fluid balance, facilitates childbirth and prostate gland function via ADH/Vasopressin and oxytocin
Hypersecretion of the Posterior Pituitary Gland Causes
SIADH