BIO 4166, Final Quiz Questions

Questions are short answer or identification; some may require calculations
Auditory System | Cranial Nerves & Special Senses | Histology | Endocrinology

Auditory System
1.   In the Weber test, the tuning fork is placed on what bone of the skull?
2.   The decibel scale [alright, the bel scale] is logarithmic. Therefore, a sound of 100 dB is how much louder than one of 10 dB?
3.   Define conduction deafness.
4.   In the audiometry experiments, two variables of sound were altered. Name them.
5.   You just came home from front and center at a Tool concert. Very loud! Would your response to 8,000 Hz tones be the same as the day before the concert?
6.   The portion of the malleus attached to the middle of the tympanic membrane has the same name as a part of the sternum. What is it called?
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Cranial Nerves & Special Senses
1.   Give a test for each of the cranial nerves.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
2.   How did the PTC paper taste to you? Why?
3.   If the right hypoglossal nerve is damaged, to which side will the tongue deviate?
4.   Describe the test for olfactory fatigue.
5.   What chemical ion is responsible for the sensation of sour taste?
6.   [ For fun ] Present a mnemonic [memory tool] for the 12 pairs of cranial nerves.
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Histology
1.   A tissue, composed of two layers of cuboidal cells, resting on a basement membrane, and lining a tubular structure, is called [be specific]:
2.   The heart is composed mostly of what tissue type? [be specific]
3.   A tendon would be classified as [be specific]:
4.   How many axons are there emanating from a neuron?
5.   Fat belongs to which of the four basic tissue types? What is its more precise name?
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Endocrinology
1.   Today's quiz is to solve the following puzzle.
As Chief Medical Examiner for the City of Boston, you notice two greasy smudges on the murder victim's smock. In your lab, you extract these spots using the appropriate organic solvents. Hopefully, they will provide a clue to identifying the perpetrator. From the search of the suspected perpetrator's home, a bottle of steroid-enhanced hand lotion was confiscated. Among other ingredients are listed dehydroepiandrosterone (DHEA) and corticosterone (CS). Remembering the utility of thin-layer chromatography in analyzing such things, you set up a quickie experiment. You make two plates, each with three knowns and one of the unknown spots. 90 minutes later, the results are in:

Plate.Spot Substance [DistanceSpotTraveled/DistanceToSolventFront]
1.1 DHEA 0.85
1.2 testosterone 0.62
1.3 estradiol 0.66
1.4 band 1 0.43
band 2 0.87
 
2.1 estriol 0.72
2.2 corticosterone (CS) 0.44
2.3 17-OH-pregnenolone 0.39
2.4 band 1 0.45
band 2 0.88

Reviewing the data, what’s in the spots on the smock?
Does it match the ingredients in the hand lotion?
What time did the victim die?
2.   Name three endocrine glands that secrete steroid hormones.
1.
2.
3.
3.   Distinguish the histologic structure of the thyroid gland from that of the adrenal cortex.
4.   [ Fun ] Is the last question of §1 a conundrum? Just what is a conundrum, anyway?
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[ Page created 24 July 2003 ]
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