What is the main difference between a macule and a papule?

Use logarithmic differentiation to find the derivative of y with respect to the independent variable.  

A 68 year old Caucasian female, who is new to your practice, shows you multiple light brown, uniformly colored, symmetric and non-symetric, flat lesions on her face, upper neck, and hands that have been present for years.  You respond these are likely:

Which ligament primarily resists excessive flexion in the thoracic spine?

During cervical flexion, the inferior facets of the superior vertebra:

Which cervical muscle produces ipsilateral side bending and contralateral rotation when acting unilaterally?

Which joint primarily allows “yes” (flexion/extension) movements of the head?

Which ligament prevents excessive anterior displacement of the atlas on the axis?

Anterior pelvic tilt is associated with which lumbar spine position?

Which cervical vertebra is distinguished by the presence of the dens?