Chapter 4 — Tissues

Question 1

4 primary tissue types

Answer 1

epithelial
connective
muscle
nervous

Question 2

the only fluid tissue of the body

Answer 2

blood

Question 3

blood is ______ tissue

Answer 3

connective

Question 4

digestive tract movement is called…

Answer 4

peristalsis

Question 5

the digestive tract is an example of ______ _____ tissue

Answer 5

smooth muscle

Question 6

three types of muscle tissue

Answer 6

skeletal, cardiac, smooth

Question 7

each tissue type has a common…

Answer 7

structural framework

Question 8

two basic components of tissues

Answer 8

extracellular matrix

cells

Question 9

two components of the extracellular matrix

Answer 9

ground substance

fibers

Question 10

the ground substance is a ________ substance that contains (3 things)

Answer 10

fluid/jellylike substance

interstitial fluid, cell adhesion proteins, proteoglycans

Question 11

function of interstitial fluid

Answer 11

transportation of molecules to and from cells from the blood

Question 12

function of proteins in the ground substance

Answer 12

help cells adhere to matrix

Question 13

function of proteoglycans in the ground substance

Answer 13

determine consistency of matrix

Question 14

three types of fibers

Answer 14

collagen
elastic
reticular

Question 15

describe collagen fibers

Answer 15

tough, high tensile strength

Question 16

example of tissue containing high ratio of collagen

Answer 16

muscle

Question 17

describe elastic fibers

Answer 17

can stretch & recoil

Question 18

example of tissue containing high ratio of elastic fibers

Answer 18

skin

Question 19

describe reticular fibers

Answer 19

weblike structure of fine collagen fibers

Question 20

example of tissue containing high ratio of reticular fibers

Answer 20

connective tissue

Question 21

define cellularity

Answer 21

the amount of cells a tissue has relative to the extracellular matrix

Question 22

the only tissue type with low cellularity

Answer 22

connective

Question 23

tissues with high cellularity ____ to one another more readily

Answer 23

bind

Question 24

define membrane junctions

Answer 24

types of proteins on the membrane that allow for the binding of cells to one another

Question 25

three types of membrane junctions

Answer 25

tight junctions desmosomes gap junctions

Question 26

describe tight junctions

Answer 26

rows of junctions adhere tightly - little space between cells - not much can pass through

Question 27

tight junctions form ______

Answer 27

barriers

Question 28

example of tissue that has tight junctions

Answer 28

cells of blood vessels - prevent blood from leaving vessels

Question 29

three parts of a desmosome

Answer 29

interior plaque intermediate filaments linker proteins

Question 30

examples of tissues that have desmosomes

Answer 30

epithelia of skin | muscle

Question 31

describe gap junctions

Answer 31

gaps in both cell membranes bind to one another - allows for communication between cells

Question 32

example of tissue that has gap junctions

Answer 32

cardiac muscle

Question 33

two other factors that help cells bind to one another

Answer 33

contour of cells (puzzle pieces) | glycocalyx (cell glue)

Question 34

define vascularity

Answer 34

amount of bloodflow through a tissue via vessels

Question 35

which tissue types have low vascularity?

Answer 35

connective | epithelial (avascular)

Question 36

connective tissue's low vascularity means...

Answer 36

it is more difficult for it to repair itself