Cells of the central nervous system that are in direct contact with cerebrospinal fluid are:
a. astrocytes
b. ependymal
c. oligodendrocytes
d. microglia cells
Answer: b. ependymal
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The right and left vertebral arteries join together to form the basilar artery.
Answer the following statement true (T) or false (F)
The function of a bursa is to
A. produce fluid. B. increase the articulating surface at a joint. C. provide a fluid-filled cushion that reduces friction. D. provide support for a weak joint. E. bind ligaments to bones.
The ________, a hook-shaped process, is a unique feature of the hamate bone.
Fill in the blank(s) with the appropriate word(s).
________ structure results primarily from hydrophobic and hydrophilic interactions between the R-groups of the polypeptide chain and water
A) Primary B) Secondary C) Tertiary D) Quaternary E) Pentanary