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The portion of a tooth that receives blood vessels and nerves is the:

All of the following are normally found in the bile EXCEPT ___________.

Dietary fats are important (in moderation) because they ______.

All of the following contain goblet cells EXCEPT the ____________________.

The function served by tonsils is to:

The muscular layer (mostly smooth muscle) of the uterus is the __________________________.

Astronomers before Shapely underestimated the size of the Milky Way galaxy because they lacked telescopes.

Double-lobed radio galaxies appear to be emitting jets of gas and radiation.

The flatness problem states that

When a large galaxy collides with a small galaxy, the smaller galaxy may be pulled apart by tidal forces.