Exam 3: The Plasma Membrane and Membrane Potential

What are the two types of vesicular transport?

What units are the membrane potentials measured in?

The cells of excitable tissues mainly include ____________________ cells and ____________________ cells.

When a secretory cell is stimulated to secrete,it may temporarily insert up to ____________________ times its surface membrane area through exocytosis.

The greater the ____________________ of the plasma membrane for a given ion,the greater the tendency for that ion to drive the membrane potential toward the ion's ____________________ potential.

In secondary active transport,energy is used directly in the entire process.

Tight junctions are found primarily in what type of tissue?

Cells are held together by a "biological glue" called the intracellular matrix.

Passage across the epithelial barrier must take place between the cells,not through them.

What tissue contains the most amount of extracellular matrix (ECM)?

Membrane potential can be calculated by using what equation?​

What are the two general types of force that accomplish transport of substances across a membrane?

Which type of proteins are located on the inner membrane surface and bind lock-and-key fashion with secretory vesicles?

If a substance can cross a membrane,the membrane is _____to that substance.

Many proteins on the outer surface of the cell are receptors,sites that "recognize" and bind with specific extracellular chemical messengers (signal molecules)in the cell's environment.

An almost insignificant fraction of the total number of charged particles present in the body fluids is responsible for the membrane potential.

Describe the structure and function of desmosomes.

____________________ forces require the cell to expend energy in transporting a substance across the membrane.

Compared to membrane carriers,how much faster are channels at allowing particles/ions to pass through the plasma membrane?

The difference in fluid composition inside and outside a cell is maintained by the ____________________.