What is the name of an air-filled sac that has the appearance of a blister on the surface of lung tissue?

Ionic bonding is best described as

a. Electrons that are shared by atoms of identical or different elements to form molecules of elements or compounds. b. Electrons that can be transferred from an atom of one element to an atom of another element resulting in the formation of positive and negative ion. c. Elements that share two pairs of electrons. d. Elements that share three pairs of electrons.

The zona orbicularis is associated with the knee joint

Indicate whether the statement is true or false