Compare regulating the amount of light with condensing the light
A) Condensers narrow the beam of light but do not change the amount of light.
B) Both can be changed by using the iris diaphragm.
C) Both can be used to concentrate the light passing through the specimen.
D) You do not need to condense the light if you use the iris diaphragm correctly.
Answer: A
You might also like to view...
A 63-year-old man comes to the emergency department with back pain, weakness, and shortness of breath. On examination, he has an aneurysm of the abdominal aorta at the aortic hiatus of the diaphragm. Which of the following pairs of structures would most likely be compressed?
(A) Vagus nerve and azygos vein (B) Esophagus and vagus nerve (C) Azygos vein and thoracic duct (D) Thoracic duct and vagus nerve (E) Inferior vena cava (IVC) and phrenic nerve
Which of the following statements concerning the nephron loop and its function is FALSE?
Sodium and chloride are pumped out of the thin descending limb of the nephron loop. The nephron loop reabsorbs roughly half the water and two-thirds of the sodium and chloride ions in the tubular fluid. Water moves by osmosis out of the descending limb of the nephron loop. The pumping of sodium and chloride from the nephron loop elevates the osmotic concentration in the peritubular fluid.
List the four steps of the contraction cycle in order of occurrence. What is needed for these steps to continuously repeat?
What will be an ideal response
What is the effect of glucagon?
A. It lowers levels of blood glucose. B. It increases blood glucose levels. C. It inhibits gallbladder contraction. D. It stimulates production of red blood cells. E. It raises blood pressure.