The majority of reabsorption occurs in the ________.
A. distal convoluted tubule
B. proximal convoluted tubule
C. collecting duct
D. nephron loop
Answer: B
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The phospholipids within the plasma membrane
a. form a bilayer with the nonpolar tails buried in the center and the hydrophilic heads lined up on the outer and inner surfaces. b. serve as a barrier to passage of water-soluble substances between the ICF and ECF. c. are constantly moving d. both (a) and (b) only e. all of these answers.
A patient is diagnosed with Multiple Sclerosis, which causes a loss of myelination of the axons in the brain. This would interfere with transmission of information between nuclei.
Answer the following statement true (T) or false (F)
A 30-year-old man is referred to a gastroenterologist for evaluation of persistent dyspepsia (indigestion)
He is noted to have other symptoms, including flushing and hypotension, and following a bone marrow biopsy, is diagnosed with systemic mastocytosis (an excessive proliferation of histamine-containing mast cells). An increased propensity for gastric and duodenal ulcers in this patient is likely ascribable to overproduction of which of the following second messengers in gastric parietal cells? A. calcium B. inositol trisphosphate C. diacyglycerol D. cGMP E. cAMP
Given the information below, calculate the tidal volume (VT). ERV = 1000 EC = 1500
A) VT = 500 B) VT = 1.5 C) VT = 1,500,000 D) VT = 2500