chapter 1 and chapter 4

Question 1

composed of elongated cells specialized in contraction and movement

Answer 1

muscular tissues

Question 2

composed long fine processes specialized in receiving generating and transmitting nerve impulses

Answer 2

nervous tissues

Question 3

defined by the production of the very abundant ECM

Answer 3

connective tissues

Question 4

function of the epithelial tissues

Answer 4

lining( covering)
secretion
absorption
special epithelial tissues that can contract (myoepithelial cells)
special sensory tissues ( taste buds and olfactory tissues)

Question 5

closely aggregated polyhedrla cells

Answer 5

epithelial tissues

Question 6

the cells are divided into two groups………

Answer 6

parenchyma and stroma

Question 7

what does the brain and spinal cord consist of

Answer 7

stroma which is always connective tissues

Question 8

the amount of ECM in each type of tissues

Answer 8

epithelial: small amount
connective: huge amount
nervous: too small
muscular: moderate amount

Question 9

the morphologies of epithelial cells

Answer 9

squamous, columnar, cuboidal

Question 10

to whom is the nuclei corresponding in regards to its shape

Answer 10

to the shape of the cell

Question 11

what dictates the function of the cell

Answer 11

its size and morphology

Question 12

shapes of the nuclei in respond to the shape of the cell

Answer 12

squamous—-> flattened
columnar—> elongated
cuboidal—–> spherical

Question 13

the importance of the nuclei shape

Answer 13

gives access to differentiate between cells shape specially when the lipid rich membrane can not be distinguished using the light microscopy

allows the ability to classify the epithelial cells in regard to it shape and # of layers

Question 14

is the epithelial cell avascular

Answer 14

yes

Question 15

where does it get its nutrients

Answer 15

the connective tissues which provides the blood vessels

Question 16

does the epithelial cell has innervation

Answer 16

yes

Question 17

what is the lamina propria

Answer 17

the connective tissues beneath the epithelial tissues in the urinary, digestive and respiratory system

Question 18

what is the papillae

Answer 18

the bends( evagination) between the connective and the epithelium

Question 19

what is the red lining underneath the epithelial cells in the light microscopy and staining

Answer 19

the basement membrane

Question 20

what is the basement membrane made of

Answer 20

basal lamia

reticular lamina

Question 21

thin electron dense sheet like layer of
fine fibrils
produced by the epithelial

Answer 21

basal lamina

Question 22

diffuse and fibrous

produced by the connective

Answer 22

reticular lamina

Question 23

from where do the macromolecules of the basal lamina come from

Answer 23

the basal surface of the epithelial cells

Question 24

ECM components in the basal lamina

Answer 24

collagen IV : 2D structure( further from the basal surface the lowest)
laminin: bind with the transmembrane integrin proteins in the basal cell membrane ( through the mesh formed by the collagen IV )
nidogen+ perlecan:
short rod like protein+ proteoglycan

Question 25

the components of the reticular lamina

Answer 25

collagen III bound to the basal lamina by collagen VII

both produced in the connective tissue

Question 26

external lamina

Answer 26

similar to the basal lamina

however it surround the muscle cells, nerve and fat storing cells

Question 27

which part behaves as a scaffold for faster regeneration and repair in the epithelial cells

Answer 27

basement membrane

Question 28

type of junction

*both name for each type

Answer 28

tight junction zonula occluden 
adjacent junction zonula adheren
desmosomes macula adherens 
hemidesmosomes
gap junctions nexus
focal adhesion