Given the following data, what is the (arithmetic) average return? What is the volatility of this investment? Returns:  Year 1 = .20, Year 2 = –.12, Year 3 = .16, Year 4 = .03, Year 5 = –.15

20. A 78-year-old man presents to the emergency department with acute onset of weakness in the lower extremities and difficulty walking. On examination he has normal strength in the upper extremities. Lower extremities are flaccid with absent reflexes. Sensory examination shows decreased temperature sensation to cold and decreased pinprick below the umbilicus. Vibration and joint position sense are preserved.  What is the most likely mechanism causing his symptoms?  

17.  60 year old man presents with ataxia. An MRI is obtained and is shown in Figure 1. Which of the following is most likely to result from this injury? Figure 1. Diffusion Weighted Image (left) Apparent Diffusion Coefficient – ADC (right)            

guidonian hand.jpg This was a special system for singers that was developed and used as a point of reference for musical notes during the Medieval era. This system was created around 1205 AD by a music theorist named Guido d’Arezzo which is believed to have evolved into our modern music staff.

Give the names for the extrinsic tongue muscles lettered below: A: [A] B: [B] C: [C] D: [D]

Extra credit: What is one thing from this unit that you found especially fascinating and/or that you still don’t quite understand? (1 point EC)

Extra credit: Which of the following muscles is not involved in production of the vowel /i/ (1 point)

The ___________ is the primary muscle used (i.e., most consistently used) to elevate the jaw during speech.

When producing nasal sounds like “m” or “n,” the velum is closed (i.e. it contacts the posterior pharyngeal wall), allowing sound energy into the oral cavity only.

Consonants are almost exclusively articulated with the tongue body.