Phospholipid heads are considered to by because they attract water where as phospholipid tails are considered to be
because they rebel water and face inward.

hydrophilic/ hydrophobic

Explanation:

Hydrophobic means to be attracted to water. Hydrophobic means to be against water. In a phospholipid bilayer, the heads point out to reach the water, but the tails stay in to stay away from the water.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

i think its through the fallopian tube