During normal, quiet breathing, the expiratory muscles are only minimally involved in the process of respiration.

Which of the following is NOT true of joint movements?

A) Most joints are flexed and abducted when the body is in anatomical position.
B) When a skeletal muscle contracts to move a joint, the insertion is pulled toward the origin.
C) In the upper and lower limbs, the origin is typically proximal to the insertion.
D) The more moveable end of a skeletal muscle is called its insertion.
E) All of these are true of joint movements.

Substances that are ____ give up hydrogen ions when they dissolve in water.

A) basic
B) acidic
C) neutral
D) hydrophobic
E) buffered