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Histology > Other slides > Flashcards

Other slides Flashcards

1
Q

What produces T3/T4 hormone?

A

Follicular cells in Follicles of Thyroid

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2
Q

What fills Thyroid follicles?

A

Colloid
(glycoprotein complex-thyroglobulin)

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3
Q

Cells outside of follicles in Thyroid

A

Parafollicular cells
- Calcitonin Secretion (decrease of Ca)

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4
Q

What muscle can we see on Thyroid Slide

A

SternoThyroud

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5
Q

Structures outside of Thyroid Follicles

A
  • Solid cell nests (main & clear cells)
  • Mixed Follicles
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6
Q

What does parathyroid gland secrete

A

Parathyroid Hormone
Increases Blood Ca2+

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7
Q

Cells in Parathyroid

A
  • Chief Cells (hormone)
  • Oxyphils (pink clusters)
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8
Q

Main 2 parts of Adrenal

A
  • Cortex
  • Medulla
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9
Q

Adrenal Cortex Origin

A

Mesodermal Origin

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10
Q

Adrenal Medulla Origin

A

Neural Crest Origin

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11
Q

Zones in adrenal

A
  • Zona Glomerulosa
  • Zona Fasciculata
  • Zona Reticularis
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12
Q

Zona Glomerulosa

A
  • Mineralocorticoids (aldosterone)
  • Circular structures
  • Lipid droplets (steroid synth)
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13
Q

Zona Fasciculata

A
  • Glucocorticoids (cortisol)
  • Narrow parallel rows
  • Sinusoid capillaries
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14
Q

Zona Reticularis

A
  • Androgens
  • Lipofuscin Granules
  • Pyknotic Nuclei
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15
Q

Adrenal Medulla cells and support

A
  • Chromaffin Cells
  • Reticular Fibers support
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16
Q

Endocrine Pancrease

A

Islets of Langerhans

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17
Q

What do Islets of Langerhans produce

A

Insulin / Glucagon
(others too)

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18
Q

Exocrine Pancrease

A

Serous Acini

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19
Q

Cells of Islets of Langerhans

A
  • Alpha Cells: Glucagon
  • Beta Cells: Insulin
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20
Q

What is special about intralobular Pancreatic ducts

A

Secrete bicarbonate to neutralize stomach acid in duodenum

21
Q

2 Main Pineal Gland Cells

A
  • Pinealocytes
  • Astrocytes / Astroglial cells
22
Q

Pinealocytes
(Pineal Gland)

A
  • Melatonin
  • Very Light
  • Release free Ca
  • Causes brain sand
23
Q

Brain Sand

A

Corpora Arenacea

24
Q

What recesses can we see near Pineal Gland

A
  • Pineal Recess
  • (suprapineal by habenular)
25
Q

What commissure can be seen Pineal Gland

A

Posterior Commissure
(long stalk)

26
Q

Thymus Main structure

A

Trabeculae separate into Cortical Caps

27
Q

Framework of Thymus

A

Epithelial Reticulum / Cytoreticulum

28
Q

Parts of Thymus Cortical Caps

A

Cortex & Medulla

29
Q

Thymus Cortex

A
  • Thymocytes (T-cells)
  • Basophilic (dark)
30
Q

Thymus Medulla

A
  • T-cell maturation
  • Enter postcapillary venules at corticomedullary junction
31
Q

What can be seen in Thymus Medulla

A
  • Hassal’s Bodies
  • Concentric Epithelium
  • Secrete Cytokine (thymic stromal lymphopoietin)
32
Q

Main idea of Tonsil Area cells

A
  • Follicles: B-cell dependent
  • Interfollicular: T-cell dependent
33
Q

What are the spaces in Palatine Tonsil

A

Crypts due to folding of Strat. Sq. non-K epithelium

34
Q

What separates Palatine tonsil from surrounding Tissue

A

CT capsule

35
Q

Hight Endothelial Venules (HEV)

A

Move Lymphocytes from bloodstream into Lymphoid tissue

36
Q

What cells help B & T cells?

A
  • Follicular Dendritic Cells
  • Interdigitating Dendritic Cells
37
Q

Where is Lingual Tonsil Situated

A

Root of Tongue

38
Q

What does PVN produce

A

Oxytocin + ADH

39
Q

What carries PVN products

A

Neurophysin
Supraoptico/Paraventriculo - hypophyseal tracts

40
Q

Where do PVN products go

A

Neurohypophysis

41
Q

Neurohypophysis Dev. from

A

Floor of Diencephalon

42
Q

What cells make up Neurohypophysis

A

Pituicytes (astrocyte)

43
Q

Dark Spots in Neurohypophysis

A

Herring bodies with Neurophysin Accumulation

44
Q

Adenohypophysis Dev. from

A

Hypophyseal Placodes of Ectoderm

45
Q

3 parts of Adenohypophysis

A
  • Pars Distalis (anterior)
  • Pars Tuberalis
  • Pars Intermedia
46
Q

What are irregular follicles in Pars Distalis of Adenohypophysis

A

Remnants of Rathke’s Pouch

47
Q

What connects pituitary to Hypothalamus

A

Infundibulum

48
Q

Acidophils Secrete

A

GH & Prolactin

49
Q

Basophils Secrete

A

TSH, LH, FSH, ACTH

Histology (10 decks)

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