BIO 322 Test Questions and Correct Answers

Sodium is responsible for ECF osmotic balance potassium is responsible for ICF osmotic balance Which of the following characterizes SIADH? decreased serum osmolarity and increased urine osmolarity arrhythmias with the presence of a shallow t wave on an EKG are characteristics of what electrolyte imbalance? Hypokalemia what are some signs/symptoms of diabetes insipidus? polyuria, polydipsia A decrease H+ ECF concentration is called _________ and will cause __________. alkalosis, hypokalemia 1. A 40 yr old man has been a smoker since he was 14. He is experiencing muscle weakness and headaches. He has also been recently diagnosed with lung cancer. His serum osmolarity is decreased. Which of the following may be true? he has SIADH due to excess of ADH 1. A 50 yr old man has shortness of breath that is worse when he lays down and a persistent cough. He reports over all he feels weak and fatigued. Temp was 37C, BP was 160/100 and respiration and pulse rates were elevated. Upon observation, you note audible wheezing. What is your next step and diagnosis? chest x-ray; left sided heart failure 1. 61 yr old has been drinking large quantities of water - up to 20 liters per day - for the past week. On physical examination, he has diminished skin turgor (a sign of moderate to severe dehydration) and a dry mucous membrane. His serum osmolality is elevated at 343. Which of the following is true? He has DI due to a deficiency of ADH 1. At mile 18 of a marathon an athlete began to experience muscle cramps and nausea. Thinking she was dehydrated she increased her water intake. She became disoriented and fell to the ground, unconscious. Which of the following electrolyte imbalance? Hyponatremia 1. A 65 yr old comes in complaining of recent muscle twitches, numbness/tingling in his arms and legs and abdominal cramping. His blood pressure isHe reports a long history of high BP that has been managed through medication. He reports his cardiologist recently changed his blood pressure meds about a week ago and he cannot remember the name of it. What is the diagnosis? hyperkalemia