Which of the Following Is Designed to Promote the One-Way

question 32

Multiple Choice

Which of the following is designed to promote the one-way flow of blood?

• A) The slow velocity of blood flow in the capillaries
• B) The presence of valves in the veins
• C) The presence of smooth muscle in the arterioles
• D) The presence of a tunica adventitia in all blood vessels

---

Definitions:

Transduction Pathway

A series of molecular actions within a cell that converts a signal from outside the cell to a functional change within the cell.

Growth Factor

A naturally occurring substance capable of stimulating cellular growth, proliferation, healing, and cellular differentiation.

Phospholipid Bilayer

A fundamental structure of cell membranes consisting of two layers of phospholipids, with hydrophilic heads facing outward and hydrophobic tails facing inward.

Cytoskeletal Filaments

Protein fibers in the cytoskeleton of a cell serving structural and mobility functions, including microfilaments, intermediate filaments, and microtubules.