G cells pyloric glands secrete gastrin which induce

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G cells pyloric glands secrete gastrin, which induce the parietal cells in the stomach to secrete more HCl and contract 94. genetic shift and antigenic shift same thing as natural selection antigenic shift: a more sudden genetic change than drift, where two different variants can come together and make a new variant
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95. genotype of parents of kid with sporadic mutation wt/wt, wt/wt 96. glucagon and insulin exerts their effects i the body through what kind of receptors they are peptide signals that act through secondary messengers, so they bind g protein receptors 97. haploid cells have a ___ number of chromosomes odd 98. Hemolysis, why does fluoride cause it? rupturing of red blood cells, and fluoride allows intercellular components to mix with plasma 99. How are neurotransmitters removed? They can be broken down by an enzyme, reuptake channels remove, or diffusion 100. how are the pancreas and digestive track connected physically it is tucked in the duodenum, and connects via major and minor duodenal papillae 101. how are TSH and TRH related TSH is thyroid stimulating and TRH is thyroid releasing, there are directly related 102. how can we estimate hydrostatic pressure in a given blood vessel think of P=pgh. any vessel below the heart experiences positive hydrostatic pressure, while any vessel above the heart experiences negative hydrostatic pressure. coronary arteries will have zero hydrostatic pressure 103. how can you improve resolution on a microscopy decreasing the wavelength of the light illuminating the sample increasing the size of the aperture of the objective lens, not the ocular lens 104. how can you measure lung capacity? spirometer: total lung capacity, residual volume and vital capacity 105. How does an increase in the substrate concentration affect reaction rate It does at first, but then the reaction rate levels off 106. how does blood flow rate and blood pressure differ in the pulmonary and systemic circulation? BP is great in systemic and BFR is the same for both circulations. The left ventricle leads to systemic, and right leads to lungs (and has less force, therefore less BP) 107. how does diabetes and folic acid deficiency affect development diabetes: increased fetal size/ hypoglycemia folic acid: neural tube defects 108. how does healthy skin turn into scar tissue fluid accumulation between layers of epidermis, tissue dehydration, epithelial growth, and collagen infiltration 109. how does myelin affect conduction velocity? it increases it by increasing the length constant and decreasing capacitance length constant: the distance an ion travels before it leaks out of the cell capacitance: as positive ions move down an axon, they are attracted to the membrane by external negative charges, but since there are so many they knock each other off. so myelin increases the distance of those external negative charges from the internal positive charges 110.
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