BIO 4166, Midterm Quiz Questions

Questions are short answer or identification; some may require calculations

Spinal Cord Anatomy & Reflexes
1.	In one experiment, you placed a coin on your subject’s arm. You then noted how long the touch sensation lasted. What property of the touch receptor were you measuring?
2.	Define monosynaptic reflex.
3.	List the twelve pairs of cranial nerves. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.
4.	What causes the cervical and lumbosacral enlargements of the spinal cord?
5.	What fluid is found within the ventricles of the brain and the central canal of the spinal cord?
6.	Sensory receptors in the skin are either encapsulated or unencapsulated nerve endings. Of which type are the lamellated Pacinian corpuscles?
7.	Which two cranial nerves are involved in the pupillary light reflex and accommodation reflex?
8.	You immersed the index finger of the left hand in warm water for two minutes. Then you dipped the index finger of the right hand in the same container of warm water. How did the temperature of the water on the right hand feel with respect to the left? [warmer? cooler? the same?]
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The Visual System
1.	What was the biggest letter on the eye chart?
2.	If the speed of light is a constant velocity, why is this velocity different in air and water?
3.	What is myopia?
4.	Define 20/100 vision.
5.	What is astigmatism?
6.	How would a contact lens work to correct farsightedness?
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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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Endocrinology
1.	Your task 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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Heart Anatomy
1.	Identify the labeled structures
	A. B. C. D. E. F. G. H. I. J. K. L. M.
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