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BIOSCI > Review LECT Cells and Tissue > Flashcards

Review LECT Cells and Tissue Flashcards

1
Q

Describe Tight junctions

A

Polar, content occludin

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2
Q

Describe Adheren

A

Transmembrane cadherin links via catenin to microfilaments actin- cytoplasm

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3
Q

Describe Gap junctions

A

Content connexin

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4
Q

Describe Desmosome

A

Cadherin links to Keratin (intermediate filament)

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5
Q

Hemidesmosomes

A

Integrin bind to Laminin in the BM and Keratin intermediate filament in cytoplasm

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6
Q

What is the Basement Membrane comprised of

A

Two parts: Basal Lamina and the Reticular lamina

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7
Q

describe the basal Lamina

A

Secreted by the epithelial cells. Contains collagen, Laminin

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8
Q

Describe reticular Lamina

A

Produced by fibroblasts contains proteins like fibronectin and collagen

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9
Q

Where is the BM found

A

between the epithelium and CT

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10
Q

Stratified Columnar Epithelium function and apparearance

A

Even layering of columnar cells

Protection and secretion

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11
Q

n

A

n

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12
Q

Stratified Cuboidal Epithlium function

A

Protection secretion and absorption

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13
Q

Stratified Cuboidal Epithlium location

A

Ducts of sweat glands, Part of the male urethra

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14
Q

Transitional Epithelium appearance

A

Looks like Stratified cuboidal epithelium when relaxed the outer layer large and rounded scallop shaped.
- stretched outer layer becomes flat and squamous like

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15
Q

Transitional Epithelium location

A

bladder

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16
Q

Simple Squamous is located where

A

Endothelium

Lung alveoli, lumen of blood, kidney

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17
Q

Does Stratified epithelia have cilia

A

No it does not

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18
Q

Describe the appearance of Pseudostratified Columnar epithelium

A

Goblet cells and taller cells present
Pseudostratisfied as it has no even layer of cells but are all connected to BM

either ciliated or non ciliated

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19
Q

Pseudostratified Columnar epithelium ciliated

location

A

Trachea

upper respiratory tract

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20
Q

Example and function of Pseudostratified Columnar epithelium ciliated

A

Upper respiratory tract

secrete mucus and move it

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21
Q

Example and function of Pseudostratified Columnar epithelium non- ciliated

A

Larger ducts of glands, epididymis, part of male urethra

Absorption and protection

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22
Q

Describe the Glomerulus Structure

A

HAs a outer layer of Simple Squamous cells and inner area of Bowman capsule

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23
Q

Simple Cuboidal EPI

A

Pancreas ducts

24
Q

Simple columnar Non ciliated

A

Gastrointestinal tract from stomach to anus

25
Q

Simple columnar ciliated

A

Parts of upper respiratory tract

26
Q

Stratified Squamous Keratinised

A

SKIn

27
Q

Stratified Squamous non- Keratinised

A

mouth tongue and oesophagus anus and Vagina

28
Q

Describe Glandular Epithelia

A

Single cells that secrete substances into ducts, surfaces or in blood

29
Q

Endocrine gland

A

Secretes directly into blood via interstitial fluid

eg: pituitary, Thyroid

30
Q

Exocrine gland

A

Secretes into ducts that empty onto the surface of a covering or lining epithelium.
eg sweat and salivary glands

31
Q

What is the ECM composed of

A

Ground substance and Protein fibres

32
Q

Where are the Protein fibres of the ECM and what does the ECM dictate

A
33
Q

What is CT made of

A

ECM and cells

34
Q

WHat is ground substance made of

A

water, protiens, polyssacarides (sugar)

35
Q

polyssacarides (sugar) example and what do they form when joined with core proteins

A

Glycosaminoglycans.

GAGS join with core proteins to form proteoglycans

36
Q

Whats are the three major fibres found in ECM

A

Collagen
Reticular
Elastic

37
Q

Describe collagen fibres in the ECM

A

Thick

38
Q

Describe Reticular fibres in the ECM

A

Thinner mainly composed of collagen spreads through tissue

39
Q

Describe Elastic fibres in the ECM

A

Thin consist of elatic surrounded by fibrillin

40
Q

3 types of Mature connective tissue

A

connective tissue proper- adipose
Fluid CT- blood
Supporting CT- Cartilage and bone

41
Q

DEscribe Erythrocytes

A

Transport O2 and CO2

42
Q

Describe Leukocytes

A

combat disease

43
Q

Describe Neutrophils and monocytes

A

phagocytic engulf bacteria

44
Q

Basophils and Mast cells function

A

intensify the inflammatory reaction

45
Q

Eosinophils work against?

A

Parasite worms and acute allergic response

46
Q

Lymphocytes are involved in

A

Immune response

47
Q

Describe the structure of muscle

A 
Epimysium _around muscle
Perumysium- around fascicles
Endomysium- around mucle cell
Sarcolemma -PM
Sarcoplasm- cell cytoplasm
48
Q

what causes striation within the myofibril

A

thick and thin filaments

49
Q

describe smooth muscle

A

non straited- no sarcomeres
thin filaments “dense bodies’
Intermediate filaments (non contract element also connect to dense bodies

50
Q

describe smooth muscle contraction

A

intermediate dont contract. cells twists

51
Q

What do Astrocytes maintain

A

Blood brain barrier

52
Q

Describe Oligodendrocytes

A

From myelin sheath around CNS axons

Myelination means action potential is faster

53
Q

Microglia

A

Function are phagocytic resident macrophage

54
Q

Ependymal cell

A

Produce CSF line the ventricles in the brains and central canal they have cilia and microvilli

55
Q

Peripheral Nervous System Neuroglia features

A

Schwann cells- myelin and non myelinated axons

Satelite cells- surround the cell bodies. Support fluid exchange

BIOSCI (29 decks)

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