The number of bones in the adult axial skeleton is ____________________.
Fill in the blank(s) with the appropriate word(s).
80
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A multilayered epithelium with cuboidal basal cells and flat cells at its surface would be classified as ________.
A) simple cuboidal B) simple squamous C) transitional D) stratified squamous
Extensions of the renal cortex that project into the medulla (and subdivide it) are known as the renal ________.
Fill in the blank(s) with the appropriate word(s).
The structure of RNA differs from DNA in that
A) the backbone of RNA contains ribose.
B) RNA contains pyrimidines but not purines.
C) RNA contains purines but not pyrimidines.
D) DNA contains pyrimidines but not purines.
E) DNA contains purines but not pyrimidines.
The cartilaginous flap that closes the trachea during swallowing is called the ________.
Fill in the blank(s) with the appropriate word(s).