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The tissue through which gases are exchanged between the
blood and the air in the lungs is
simple squamous epithelium
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Body heat is lost primarily by
radiation
Bone cells form concentric circles around longitudinal tubes
called
central canals
Functions of neuroglia include which of the following?
They support and bind nervous tissue and provide nutrients
and growth factors to neurons by connecting them to blood
vessels.
growth of body parts
, Which of the following is the most abundant inorganic
substance in the body?
water
Which of the following is not a characteristic of enzymes?
They are most active at temperatures above 53 degrees C.
Cells are placed in a solution that causes them to absorb liquid
until they burst. When more water is removed from the
solution, newly added cells do not burst. The original solutions
was __________ , while the second was __________ to the cells.
hypotonic; isotonic
Which organelle contains the nucleolus?
nucleus
Exposure to ultraviolet light darkens skin by stimulating
synthesis of
melanin