Please answer asap Please answer asap 51. During inspiration A. the diaphragm re
ID: 3483816 • Letter: P
Question
Please answer asap Please answer asap 51. During inspiration A. the diaphragm relaxes and pleural pressure increases B. the diaphragm relaxes and pleural pressure decreases C. the diaphragm contracts and pleural pressure increases D. the diaphragm contracts and pleural pressure decreases 52. More than 98% of the 02 transported in blood is transported A. as dissolved O2 in plasma C. as bicarbonate ion in plasma B bound to the heme portion of hemogloban D. as carbamiohemoglobin 53. For the sympathetic nervous system, the neurotransmitter substance released at synapses between postganglionic axons and cardiac muscle cells is A acetylcholine norepinephrine C. serotonin D glycine 54. Nerve impulses travel most rapidly through A. un-myelinated axons of large diameter C. un-myelinated axons of small diameter. B. myelinated axons of large diameter D. myelinated axons of small diameter 55. Stimulation of the parasympathetic branch of the autonomic nervous system would cause A. increased cardiac output. C. increased rate of urine formation. B. decreased secretion of digestive enzymes D. increased blood flow to skeletal muscles 56. Bile is A an enzyme of the duodenum that digests fats to fatty acids and glycerol B. a substance produced by the liver that acts to emulsify fat C. an alkaline secretion of the pancreas that neutralizes stomach acid D. an intrinsic factor necessary for the absorption of vitamin Bi2 and folic acid Directions: For each question below, if the statement is true, mark the letter "A" as the answer, and if the statement is false, mark the letter "B" as the answer. 57. In general, sympathetic responses are "whole body" responses while control separate organ systems independently A. True B. False 58. Excess blood levels of aldosterone would result in a fatal drop on blood pressure A. True B False 59. The sudden increase in LH levels near the end of the follicular phase of the ovary is necessary for ovulation to occur. A. True B. FalseExplanation / Answer
51. Answer is C
During inspiration, the diaphragm and external intercostal muscles contract, increasing the volume of the thoracic cavity. This causes the intrapleural pressure to become more negative, which increases thetranspulmonary pressure, causing the lungs to expand. It is called tidal colume.
52. Answer B
Oxygen bound to hemoglobin
53. Answer A
The postganglionic axons innervate the peripheral blood vessels, the heart, and other viscera. The principal neurotransmitter released at the synapse between the pre- and postganglionic neurons is acetylcholine (ACh).
54. Answer B (Mylenated axons larger diameter)
55. Answer A (Increased cardiac ou)tput
56. Answer A
57. Answer B (False)
58. Answer B (False) Hyperaldosteronism can cause high blood pressure
59. Answer A (True)