Chapter 16/17 Flashcards
Exam 5
This gland is multifunctional organ and cannot live without it
Adrenal gland
This gland is composed of outer adrenal cortex and inner adrenal medulla
Adrenal gland
Produces steroid hormones and neuropeptides
Adrenal gland
What is Zona Glomerulosa is known as
G zone cells
Synthesize aldosterone critical for sodium retention, potassium excretion, and acid/base homeostasis
Zona Glomerulosa cells
Helps regulate blood pressue
Zona glomerulosa cells
Zona fasciculata cells is known as
F zone cells
Synthesize glucocorticoids such as cortisol, critical to blood glucose homeostasis and blood pressure
Zona fasciculata cells
This zone has a foamy cytoplasma
Zona fasciculata cells
Zona reticularis cells is known as
R zone cells
Converts DHEA to DHEA-S
Zona Reticularis cells
What is the main adrenal androgen and used to make androgens and estrogens
DHEA-S
Adrenal steroids are derived by sequential enzymatic conversion of a common substrate, What is it and what is it apart of?
Cholesterol and Cortex steroidogenesis
Cortex steroidogenesis decreased activity of any enzymes that is required for what?
biosynthesis can occur as an acquired or inherited trait
Evaluation of adrenal function requires what
measuring relevant adrenal hormones, metabolites, and regulatory secretagogues
Congenital adrenal hyperplasia is what?
Inherited family of enzyme disorders causing low cortisol and aldosterone production
Isolated hypoaldosteronism
Caused by adrenal gland destruction, chronic heparin therapy, unilateral adrenalectomy, and G-layer enzyme deficiencies
Hyperaldosteronism
Can lead to metabolic alkalosis, hypertension, and hypokalemia
Adrenal insufficiency is also known as
Addison’s disease
That causes Addison’s disease
reduced production of adrenal hormones or adrenal gland works but the hormone release does not
If someone has low baseline cortisol levels and ACTH is elevates what could they have?
Addison’s disease
What is hypercortisolism known as
Crushing’s Syndrome
What causes Crushing’s Syndrome
Excess of CRH, ACTH, Adrenal glucocorticoid secretion, and exogenous intake (Steroid use)
If there is androgen excess what will boys present with
Penile enlargement, overgrowth of hair, deep voice