Keeping Animals in a Varied Environment with Stimulation Increases The

question 31

Multiple Choice

Keeping animals in a varied environment with stimulation increases the:

• A) branching of dendrites.
• B) speed of action potentials.
• C) density of Nodes of Ranvier along the axon.
• D) thickness of axons.

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Definitions:

Peristalsis

A sequence of muscular waves that propel food along the digestive system.

Chemical Digestion

The process in the digestive system where enzymes break down food into small molecules the body can absorb.

Diffusion

Tendency for solute molecules to move from an area of high concentration to an area of low concentration in solution; the product of the constant random motion of all atoms, molecules, or ions in a solution.

Active Transport

The process where molecules travel through a cellular membrane from an area of lesser concentration to an area of greater concentration, necessitating the use of energy.