Parathyroid hormone (PTH) binds to receptors on osteoblasts.
Answer the following statement true (T) or false (F)
True
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Water loss through the epidermis could cause a serious threat to health and well-being. Which of the following protects us against excessive water loss through the skin?
A) Glycolipids that are secreted by keratinocytes into extracellular spaces. B) The dermis is the thickest portion of the skin and water cannot pass through it. C) Fat associated with skin prevents water loss. D) The size and shape of the cells that make up the stratum spinosum, as well as the thick bundles of intermediate filaments.
The gray matter of the spinal cord is organized into anterior, posterior, and lateral ________.
Fill in the blank(s) with the appropriate word(s).
Cat's urinate in ____________ boxes, containers filled with absorbent material
Fill in the blank(s) with correct word
Where are unmyelinated nerve fibers surrounded by Schwann cells?
A. In the PNS B. In the PNS and CNS C. In the CNS D. Nowhere. Unmyelinated nerve fibers are never surrounded by Schwann cells.