Estrogen has a significant influence on skin biology and structure, particularly on epidermal keratinocytes, dermal fibroblasts, melanocytes, hair follicles, and sebaceous glands. Threshold levels of estrogen, in fact, are hypothesized to be critical for maintenance of skin integrity. A loss of estrogen accompanies menopause in women. Where in the skin would you find this list of cells, structures, and glands?

Organs of the digestive system can be found in which quadrant(s)? Select all that apply.

The thoracic body surface region is medial to which one other region?

The axillary region is _____________.

Conclusions are based on which of the following in a scientific investigation?

Which of the following are TRUE statements? Select any/all that apply.

What structures are classified to be in the nervous system? Select any/all that apply.

You are treating a man who just got punched in the face. Which set of terms would you use to describe locations of possible injuries to the face? Select only one group of answers.

Select all of the following that are types of muscle tissue.

In the anatomical position,