Chapter 2

Question 1

Tight Junctions

Answer 1

Prevent fluids and most molecules from moving between cells

Question 2

Desmosomes

Answer 2

anchor cells together

“desmos” = link, connection

Question 3

Gap junctions

Answer 3

Trans-membrane proteins that allow small molecules to pass from cell to cell

Question 4

Lysosomes

Answer 4

contain digestive enzymes that digest indigested bacteria, viruses, toxins, and such

Question 5

Cytoskeleton

Answer 5

include; microfilaments, intermediate filaments, and microtubules

Question 6

Peripheral proteins

Answer 6

• function as enzymes, motor proteins, and cell to cell links
• loosely attached to integral proteins

Question 7

Voltage gated channels

Answer 7

open and close in response to changes in the membrane potential

Question 8

What must be present for diffusion to occur?

Answer 8

a concentration gradient

Question 9

Which part of the cell serves to process, package, and export proteins?

Answer 9

Golgi Apparatus

Question 10

During which period can a second action potential be initiated by a larger than normal stimulus?

Answer 10

Relative Refactory Period

Question 11

An increase in cell membrane potential towards a more negative value is known as what?

Answer 11

hyperpolarization

Question 12

abdominopelvic regions:

2

Answer 12

epigastric

Question 13

abdominopelvic regions:

4, 6

Answer 13

lumbar

Question 14

abdominopelvic regions:

7,9

Answer 14

iliac or inguinal

Question 15

abdominopelvic regions:

center bottom

Answer 15

hypogastric or pubic

Question 16

abdominopelvic regions:

1,3

Answer 16

hypochondriac

Question 17

abdominopelvic regions:

5

Answer 17

umbilical