ASU BIO 181 EXAM 3 LATEST 2023 -2024 ACTUAL EXAM 160 QUESTIONS AND CORERCT DETAILED ANSWERS (VERIFIED ANSWERS ) |ALREADY G RADED A+ What could the stress of taking an exam do to your glucose levels in various parts of the body? - ANSWER - The stress could cause the sympathetic nervous system to kick in and increase glucose into the blood Vitamin D is really a hormone. - ANSWER - True Vitamin D is synthesized from cholesterol - ANSWER - True Your mom came back from her medical appointment and said that the M.D. told her she had low bone density. What medical problem could this cause and what hormones/endocrine glands in the body are involved? - ANSWER - Osteoporosis, the parathyroid hormone released on the thyroid glad has a large role in bone density. Too much parathyroid hormone causes calcium loss in the urine at the expense of bone. Where do fats in the body play a role in balance between glucose and glycogen? - ANSWER - If there is extra glucose present in a cell the reserve glucose is put in reserve as glycogen (stored as fat) mainly in the liver and muscle cells to be used at a later time Insulin is produced by alpha cells. - ANSWER - False When the Sympathetic nervous system is triggered glycogen is broken down to glucose to provide more energy. - ANSWER - True The medulla of the adrenal gland produces epinephrine (i.e., adrenaline). - ANSWER - True When epinephrine is released it triggers activation of which part of the Autonomic Nervous System? - ANSWER - sympathetic The left ventricle of the heart contains more muscle. - ANSWER - True Tidal breathing causes the incoming air to mix with some older air in the lungs. - ANSWER - True The two circuits in the heart and the cardiovascular system have the same blood pressure. - ANSWER - False To prevent back flow of blood in the heart there are __________________. - ANSWER - valves Oxygen is distributed throughout the body by: - ANSWER - The circulatory system. Nutrients and oxygen can leave the arteries and arterioles to reach the cells. - ANSWER - False Blood moves very rapidly in the capillaries. - ANSWER - False When oxygen passes from the lungs into the circulatory system as a gas, how many cells does it have to pass through to be in the circulatory system? - ANSWER - 2. Alveoli and capillary cells. The partial pressure of oxygen in the lungs causes it to load into the circulatory system. - ANSWER - True When arterial blood pressure falls the body compensates to raise the blood pressure. Explain this process. - ANSWER - The kidneys release renin which activates angiotensin (makes vessels constrict) which causes arterial pressure to rise When the ventricles contract blood is pushed out into the artery and the artery stretches because of its elastic layers allowing the blood to continue to flow into the circulatory system while the ventricle is relaxing. - ANSWER - True Surfactants is one of the later components made in the fetus (prior to birth). - ANSWER - True
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