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Cards In This Set
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Exocrine Glands
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Release enzymes to enternal environment through ducts
- include sudoriferous (sweat) sebaceous (oil), mucous, & digestive glands |
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Endocrine Glands
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Release hormones directly into body fluids
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Receptors
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Proteins needed for hormones to beind to
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Endocrine System
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Slow, indirect, & long lasting
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Peptide Hormomes
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Derived from peptides
- proteins, cannot diffuse through membrane, bind to receptors on membrane & act through a 2nd messenger |
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Steroid Hormones
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- come only from adrenal cortex, gonads, or placenta
- lipids, diffuse through membrane & act in nucleus |
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Tyrosines
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Thyroid hormones & catecholamines
-thyroids diffuse into nucleus & catecholamines act on receptors @ the membranes |
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Peptide Hormonone (Specifics)
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- Anterior Pituitary - FSH, LH, ACTH, hGH, TSH, Prolactin
- Posterior Pituitary - ADH, & oxytocin -Parathyroid - PTH - Pancreatic hormones - glucagon & insulin |
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Steroid Hormone (Specifics)
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- glucocorticoids & mineral corticoids of the adrenal cortex: cortisol & aldosterone
- Gonadal hormones: estrogen, progesterone, testosterone |
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Tyrosine Derivatives
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Throid hormones - T3 T4 & catecholamines formed in the adrenal medulla (epinetherine & norepinepherine)
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Aldosterone exerts its effects on target cells by
A) binding to a receptor @ the cell surface, setting off a 2nd messenger cascade B) diffusing into adrenal cortical cells, where it influences transcription of certain DNA sequences C) flowing across the synapse, where it binds & initiates an AP D) entering into target cells, where it increases the rate of production of sodium-potassium pump proteins |
Entering into targeted cells, where it increases the rate of production of sodium potassium pump proteins
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A patient develops an abdominal tumor resulting in the secretionof large quantities of aldosterone into the bloodstream. which of the following will most likely occur>
A) levels of renin secreted by the kidney will increase B) levels of oxytocin secreted by the pituitary will increase C) Levels of aldosterone secreted by the adrenal cortex will decrease D) Levels of aldosterone secreted by the the tumor will decrease |
Levels of aldosterone secreted by the adrenal cortex will decrease
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Which of the following is true for all endocrine hormones
A) they act through a 2ndary messenger system B) bind to a receptor protein C) dissolve in blood D) derived from a protein precursor |
Bind to a receptor protein
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All of the following act as secondary messengers for hormones EXCEPT
A) cyclic AMP B) Calmodulin C) acetylcholine D) cyclic GMP |
Acetylcholine
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Which of the following is true of all steroids
A) target cells of any steroid include every cell in the body B) Steroids bind to receptor proteins on the membrane of their targer cells C) steroids are synthesized on the rough ER D) steroids are lipid soluble |
Steroids are lipid soluble
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