Describe the concept of muscle tetanus {Ans: Sequential stimuli of a muscle cause the increase of the myoplasmic calcium to rise. Without enough time to reuptake or extrude calcium, the muscle will undergo more contraction d/t more binding sites being exposed.}Where is the majority of Na reabsorbed in the nephron? {Ans: Proximal tubule (65% of Na reabsorption) Ascending limb (25% of Na reabsorption)}Describe the sequence of Neuro-Endocrine integration starting with the autonomic nervous system/hypothalamus {Ans: Autonomic nervous system delivers nerve impulses/neurotransmitters to the hypothalamus The hypothalamus delivers nerve impulses or ADH/Oxytocin to PP. Releasing or Inhibiting Hormones to AP. These hormones/stimuli act on pituitary gland which then releases stimulating hormones Stimulating hormones act on the endocrine cells which begins hormone biosynthesis and hormone secretion Hormones are transported to target cell where they will bind to HR, cause signal transduction and physiologic response, then hormones will undergo degradation/excretion}Describe the function and general pathway of the Thymus Gland {Ans: Links the endocrine system with the immune system and secretes several thymic hormones Thymus gland produces thymosin hormones Thymosin hormones act on bone marrow hematopoeitic stem cells Effects are T Cell differentiation and maturation: Cytotoxic T-Lymphocytes - attack cancer/virus