Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Histology Lecture > Epithelium > Flashcards

Epithelium Flashcards

1
Q

Aggregated polyhedral cells

A

epithelial

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

several types of fixed and wandering cells

A

connective

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

elongated contractile cells

A

muscles

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

elongated cells with extremely fine processes

A

nervous

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

composed of closely aggregated polyhedral cells adhering strongly to one
another and to a thin layer of ECM

A

epithelial tissue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

functions of epithelium

A
  1. Covering, lining and protection
  2. Absorption
  3. Secretion
  4. Filtration
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

a semipermeable filter for substances
reaching epithelial cells from below

A

basement membrane

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

2 parts of basement membrane

A
  • Basal lamina
  • Reticular Lamina
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

functions of basement membrane

A
  • Physical support
  • Cell attachment
  • Filter
  • Guides cell migration
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

separates apical and basolateral membrane domains

A

tight junctions or zonula occludens

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

major transmembrane protein of tight junctions or zonula occludens

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

firmly anchoring a cell to its neighbors

A

Adherens Junction (Zonula Adherens)

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

major transmembrane protein of Adherens Junction (Zonula Adherens)

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

resembles a single “spot-weld” and does not form a belt around the
cell

A

Desmosome (Macula Adherens)

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

provides points of strong intermediate
filament coupling between adjacent cells,
strengthening the tissue

A

Desmosome (Macula Adherens)

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

anchors cytoskeleton to the basal lamina

A

Hemidesmosome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Major transmembrane link proteins of hemidesmosomes

A

Integrin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Allows direct transfer of small molecules and ions from one cell to
another

A

Gap Junction (Nexus)

19
Q

major transmembrane protein of Gap Junction (Nexus)

A

connexin

20
Q

function is to increase epithelial cells’
apical surface area for absorption.

A

MICROVILLI

21
Q

increase the surface area available for
absorption; a motion-detecting function

A

STEREOCILIA

22
Q

long, highly motile apical structures,
larger than microvilli, and containing
internal arrays of microtubules not
microfilaments

A

Cilia

23
Q

Classifications of lining epithelia

A
  • Squamous
  • Cuboidal
  • Columnar
24
Q

classifications of secretory epithelia

A
  • Endocrine
  • Exocrine
25
Q

are classified according to the number of cell layers and the cell
morphology in the outer layer

A

Lining epithelia

26
Q

cell shapes of epithelia

A
  • Squamous
  • Cuboidal
  • Columnar
27
Q

layers of epithelia

A
  • Simple
  • Stratified
  • Pseudostratified
  • Transitional
28
Q

single layer of flat cells with disc-shaped nuclei; molecules can easily pass (diffusion, filtration); Secretes lubricating substances in serosae

A

simple squamous epithelium

29
Q

single layer of cube-like cells with large, spherical central nuclei; secretion and absorption

A

simple cuboidal epithelium

30
Q

single layer of column-shaped (rectangular) cells with oval nuclei; Absorption, secretion of mucus, enzymes, and other substances

A

simple columnar epithelial

31
Q

all cells originate at basement membrane; only tall cells reach the apical surface; may contain goblet cells and bear cilia; nuclei lie at varying heights within cells; gives false impression of stratification; secretion of mucus; propulsion of mucus by cilia

A

pseudostratified columnar epithelium

32
Q

Where is pseudostratified columnar epithelium located

A

ducts of male reproductive tubes and large glands; lines trachea and most pf upper respiratory tract

33
Q

many layers of cells but the apical part of the tissue is a squamous
epithelium

A

stratified squamous epithelium

34
Q

contain the protective protein keratin

A

keratinized stratified squamous epithelium

35
Q

forms moist lining of body openings

A

non-keratinized stratified squamous epithelium

36
Q

Location of keratinized stratified squamous epithelium

A

epidermis

37
Q

Location of non-keratinized stratified squamous epithelium

A

esophagus, mouth, and vagina

38
Q

Basal cells usually cuboidal or columnar; Superficial cells dome-shaped or squamous; stretches and permits distension of urinary
bladder

A

transitional epithelium

39
Q

Location of transitional epithelium

A

ureter
urinary bladder
urethra

40
Q

remain connected with the
surface epithelium

A

exocrine glands

41
Q

lose the connection to their
original epithelium and
therefore lack ducts

A

endocrine glands

42
Q

most common method of protein or glycoprotein secretion

A

Merocrine

43
Q

releases the product and cell debris into the gland’s lumen

A

Holocrine

44
Q

release the product together with small amounts of cytoplasm
and cell membrane

A

Apocrine

Histology Lecture (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions