histoligy

Question 1

what is histoligy?

Answer 1

the study of tissue

Question 2

What are the 4 major types of tissue?

Answer 2

Epithelial, Connective , Muscle, Nervous.

Question 3

what forms cell connections?

Answer 3

membrane proteins

Question 4

what are the three different types of cell junctions?

Answer 4

Tight junctions, Anchoring junctions, Gap junctions

Question 5

what kind of junction has a partial fusion of specifique proteins on the lateral surface of the cell membrane and prevents material from passing between cells?

Answer 5

tight junctions

Question 6

what kind of junction fastens cells to each other and/or to extracellular material?

Answer 6

Anchoring Junctions

Question 7

what kind of junction has an open channel through the ajacent cell membranes,interconnecting the cytosols of the cell. allows passage of ions/small molecules from one cell to the other?

Answer 7

Gap junctions

Question 8

what king of tissue is an Epithelial tissue?

Answer 8

its a lining tissue

Question 9

whats kind of tissue is a Connective Tissue?

Answer 9

it connects tissues

Question 10

what kind of tissue is a Muscle tissue?

Answer 10

its a contracting tissue

Question 11

whats kind of tissue is a nervous tissue?

Answer 11

its a signaling tissue

Question 12

what does Epithelial tissue do?

Answer 12

it line the body/ organ cavities (skin)

Question 13

what are some characteristics of Epithelial tissue?

Answer 13

• has one free surfacee
• little extracellular space between cells
• avascular
• basement membrane
• extracellular layer

Question 14

what does stratified mean?

Answer 14

means more than one layer

Question 15

what does simple mean when you are reffering to layers of tissue?

Answer 15

one layer

Question 16

what does squamous mean ?

Answer 16

flattened

Question 17

what does cuboidal mean?

Answer 17

cube/round

Question 18

what does columnar mean?

Answer 18

taller than wide

Question 19

there are three subtypes to simple epithelia, what are they?

Answer 19

simple squamous (squished flat cells), simple cuboidal (cubed shaped) and simple columnar (column shaped cells)

Question 20

what subtypes are the to stratified epithelia??

Answer 20

stratified squamous (flat)
stratified cuboidal (cubed shaped)
stratified columnar (column shaped)

Question 21

what is pseudostratified epithelia?

Answer 21

appears stratified but all cells sit on basement membrane= simple

Question 22

what is transitional epithelia?

Answer 22

cell shape varies with stretching. (found only on inner layering of urinary system) cuboidal to squamous when stretched.

Question 23

what kind of epithelium has exocrine and endocrine glands?

Answer 23

glandular epithelium

Question 24

what do unicellular exocrine glands do?

Answer 24

secrete mucus in the digestive urinary, reproductive and respatory tracts

Question 25

what do multicellular exocrine glands consist of?

Answer 25

secretory and duct cells | E.G. glands: sudoriferous (sweat), sebaceous (oil), mammary, digestive

Question 26

endocrine glands have ducts, true or false

Answer 26

false! they are ductless

Question 27

what are three functions of Epithelia?

Answer 27

Protection, secretion, control of permeability.

Question 28

are cells close or far apart in Connective Tissue?

Answer 28

far appart, separated by an extracellular matrix

Question 29

what do cell name ending in "blast" do? e.g. osteblast, chondroblast etc.

Answer 29

they create matrix

Question 30

what do cell names ending in "cyte" do? e.g. osteocyte, chondrocyte etc

Answer 30

they maintain matrix

Question 31

what do cell names ending in clast do?

Answer 31

they break down matrix

Question 32

between loose CT and Dense CT which is vascular??

Answer 32

loose CT is highly vascular

Question 33

does dense CT have little or many fibres?

Answer 33

many

Question 34

is cartilage vascular or avascular?

Answer 34

avascular

Question 35

is bone vascular or avascular?

Answer 35

Very vascular

Question 36

give me three subtypes of muscle tissue.

Answer 36

skeletal, cardiac, smooth

Question 37

what two cell types are in nervous tissue?

Answer 37

neurons and glial cells