What male structure is responsible for approximately 20 – 30% of semen volume?

The arch of the azygos vein is best associated with which of the following areas of the mediastinum?

A herniation of intestines through a weakness in the anterior abdominal wall lateral to the inferior epigastric vessels results in which of the following types of hernia?

What specimen typically is the most practical for an outpatient undergoing a basic urine screen?

A low and fixed specific gravity indicates:

Following a normal successful lumbar puncture procedure, the first collection tube of CSF should be used for:

A sign of a traumatic tap during lumbar puncture is:

It is normal for 80% of sperm to display which type of motility? 

Which of the following would be the BEST “specimen of choice” for a complete urinalysis with culture?

Nitrites in urine are most likely indicative of: