Epithelium

Question 1

What are the 4 basic tissue types

Answer 1

CT
epithelial
muscle
nervous

Question 2

All the adult tissues are from what 3 germ layers

Answer 2

ectoderm
mesoderm
endoderm

Question 3

All adult tissues form during the proccess of?

Answer 3

gastrulation

Question 4

Ectoderm derivatives include

Answer 4

Surface ectoderm:
-epidermis
-hair
-cornea and lens 
Neuroectoderm:
-neural tube- CNS
-neural crest-PNS- glial cells, pigment cells

Question 5

Mesoderm derivatives

Answer 5

• heart
• BV
• spleen
• kidney

Question 6

Endoderm derivates

Answer 6

-epithelial lining of resp system, digestive system, liver, gallbladder, pancreas, thymus

Question 7

Function of epitheium

Answer 7

protection (skin)
absorption
transportation
secretion
reception

Question 8

types of epithelia

Answer 8

surface/lining epithelia -external surfaces, body cavities(mesophylium), body tubes

Question 9

epithelial tissue characteristics

Answer 9

avascular
exhibit polarity- specific cell surface and those regions have modifications
close cell aposition- for protection
free surface - the air, lumen of digestive tract
basal surface in contact with basal lamina

Question 10

Epitheliod

Answer 10

lack free surface (lack surface connection/location)

typical of endocrine glands/cells

Question 11

Classifying epithelial is done

Answer 11

based on morphology not fxn

number of cell layers - simple=1, stratified=

Question 12

which cell shape can undergo keratinization

Answer 12

squamous

Question 13

Location of simple squamous

Answer 13

surfaces involved in a diffusion of gasses or fluids
lining of BV
lining of the peritoneal covering of organs

Question 14

what is the fxn of endothelium

Answer 14

controls blood fluidity,platelet aggregation, vascular tone

Question 15

what is the fxn of mesothelium

Answer 15

parietal 
-forms membrane that lines body cavities
-peritoneal, pleural, pericardial
visceral
-covers outer surface of internal organs 
secrete lubricant

Question 16

Location of simple cuboidal epithelium

Answer 16

lining ducts/tubules involved in excretion, secretion and absorption
kidney nephron PCT

Question 17

Location of simple columnar epithelium

Answer 17

absorptive surfaces (SI)
secretory surfaces (stomach)
female repro

Question 18

Locations of pseudostratified ciliated columnsar epithelium

Answer 18

air ways of resp system

olfactory epithelium

Question 19

Transitional epithelium is unique to>

Answer 19

urinary system