Tissue and shape of epithelial cells Flashcards

1
Q

location of simple squamous epithelium

A

lining of heart, blood & lymphatic vessels (endothelium)
lining body cavities(mesothelium)
bowman’s capsule of kidney
lining respiratory spaces of lung

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Function of simple cuboidal cells (3)

A

Absorption
Secretion
Barrier

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Location of simple cuboidal cells

A
small ducts of exocrine glands
surface of ovary
kidney tubules
thyroid follicles
liver hepatocytes
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Function of simple columnar epithelium

A

secretion, absorption

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Location of simple columnar epithelium

A
stomach
small intestine
large intestine
Gall bladder
Uterine tube
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Major function of pseudostratified epithelium

A

secretion
conduit
absorption

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

location of pseudostratified epithelium

A

trachea & bronchial tree

male reproductive tract (ductus deferens, epididymis)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Function of stratified squamous epithelium

A

protection against injury & abrasion and barrier to dehydration & infection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

location of stratified squamous epithelium

A

esophagus
vagina
epidermis
oral cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

stratum corneum

A

dead cells filled with keratin filaments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

stratum granulosum

A

most superficial layer of nucleated squamous cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Stratum basale

A

layer of cuboidal cells attached to the basement membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Location of stratified cuboidal epithelium

A

duct of eccrine sweat gland
large ducts of exocrine glands
Anorectal junction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Location of stratified columnar epithelium

A

largest ducts of exocrine gland

anorectal junction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Location of transitional epithelium

A

Urinary system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

In empty bladder how are the shapes of cells of transitional epithelium?

A

basal cells are mostly cuboidal, middle layer polygonal and apical cells bulge into the lumen

17
Q

In stretched bladder how are the shapes of cells of transitional epithelium?

A

thickness of epithelium is reduced and superficial cells are flattened.

18
Q

Another name of stratified epithelium lining urinary tract

A

urothelium

19
Q

Location of cilia

A

respiratory epithelium,

fallopian tube

20
Q

What is another name of microvilli?

A

brush border

21
Q

What is microvilli made up of?

A

actin microfilaments

22
Q

Where is microvilli anchored on?

A

terminal web which contain microfilaments to stabilize microvilli

23
Q

Location of microvilli

A

Small intestine
gall bladder
kidney

24
Q

Location of stereocilia

A

epididymis
vas deferens
inner ear

25
Steps of DNA methylation for repression of transcription (4)
1. Dnmt3 methylates unmethylated DNA 2. MeCP2 recruits HDAC1 3. HDAC1 deacetylates histones 4. Heterochromatin is formed
26
Role of histone acetylation
reduces affinity between histone and DNA, which increase transcription.
27
Purine
Adenine and guanine
28
Pyrimidine
Thymine and Uracil , Cytosine