Normal dimensions of the human heart for a live persons can be determined noninvasively using magnetic resonance imaging (MRI) or two dimensional echocardiography (2DE). (S.Kaul, et al., Measurement of normal left heart dimensions using optimally oriented MR images, AM. J. Radiol. 146:75-79, 1986.) During systole the left ventricular cavity has […]

1. Define sensitivity and specificity. 2. A cancer screening test is being applied in a population of 200 men who were also evaluated through the biopsy of tumor. 30 of the men were confirmed having cancer through biopsy. Out of these 30, 25 were also found to have cancer through […]

1. A person with a disorder that limits absorption of bile isat increased risk for deficiency of:(a) folate(b) niacin(c) riboflavin(d) ascorbic acid2. which of the following stimulates the pancreas to releasebicarbonate-rich juice?(a) gastrin(b) secretin(c) glucagon(d) gastric-inhibitory peptide3. Which of the following is a feature of the lymphaticsystem?(a) it carries fats […]

1.Compare and contrast vegetative features (i.e., features not directly involved in reproduction) of bryophytes and gymnosperms. For as many differences as possible, explain how the features of gymnosperms allow them to colonize dry environments better than bryophytes can. 2.Describe the growth of a highly branched, large oak tree from an […]