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03. MSK Test 1 > 14. Epithelial Tissue > Flashcards

14. Epithelial Tissue Flashcards

1
Q

Which regional domain of Epithelial tissue communicates with adjacent cells?

A

The Lateral Domain

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2
Q

What are the four types of Apical Specializations?

A

Cilia, Flagella, Microvilli, and Steriocilia

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3
Q

For Microvilli

What is their function?

What makes up the core of each Microvillus?

A

Absorption

Actin

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4
Q

Where might one find Sterocilia / Stereovilli?

A

The Epididymis and the Sensory Cells of the Inner Ear

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5
Q

What differentiates Stereocilia from Microvilli?

A

Stereocilia are much longer.

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6
Q

What makes up the core of Cilia?

A

An Axoneme

(Microtubules)

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7
Q

What are the three types of Cilia and their functions?

A

Motile: Beat in a wave like fashion to move substances

Primary: Immobile, but function as chemo-/osmo-/mechano- sensors

Nodal: Embryonic, help determine left/right axis

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8
Q

What is the function of Occluding Junctions?

Where do you find them on the cell?

A

They are impermeable.

Near the most apical surface.

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9
Q

What would you find in the Zonula Adherens?

A

Anchoring Junctions

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10
Q

What is the function of Anchoring Junctions?

A

Link a cell to the cytoskeleton of adjacent cells

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11
Q

What is another name for a Macula Adherens?

A

A Desmosome

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12
Q

Both Desmosomes and Adherins Junctions use what type of Cell Adhesion Molecule?

A

Cadherins

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13
Q

What is the function of Gap Junctions?

What cell adhesion molecule do they use?

A

Mediate communication between cells

Connexin

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14
Q

What do Focal Adhesions do?

What cell adhesion molecule do they use?

A

Anchor Actin filaments to the Basement Membrane

Integrins

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15
Q

Where might you find Simple Squamous Epithelium?

A

Lining the Blood and Lymph Vessels (Endothelium)

Lining of Serous Membranes (Mesothelium)

Lining Alveoli, Loop of Henle, Ducts

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16
Q

Where might you find Simple Cuboidal Epithelium?

A

Kidney Tubules, Glands, and Associated Ducts.

Terminal Bronchioles

Covering of the Ovary

17
Q

Where might you find Simple Columnar Epithelium?

A

Auditory Tubes

Uterus

Oviducts

Stomach

Small / Large Intestines

Gallbladder

18
Q

Where might you find Pseudostratified Columnar Ciliated Epithelium?

A

Lining of the Nasal Cavity

Pharynx

Trachea

Bronchi

(Respiratory System except the Terminal Bronchioles)

19
Q

Where might you find Urothelium?

A

Urinary Bladder

Ureters

Urethra

20
Q

What is the special function of the Urothelium?

A

It is distensible

21
Q

Where might you find Nonkeratinized Stratified Squamous Epithelium?

A

Oral Cavity

Portions of the Pharynx

Esophagus

Anus

Vagina

Urethra

Cornea

22
Q

What is special about the Apical Layer of Keratinized Stratified Squamous Epithelium?

A

The cells there do not have Nuclei

23
Q

Where might you find Stratified Cuboidal Epithelium?

A

Sweat Glands and Ducts

Ovarian Follicles

Salivary Gland Ducts

24
Q

What kind of membranes are the Peritoneum, Pericardium, and Pleura?

A

Serous Membranes

25
Q

What is the method of secretion for a Merocrine Cell?

A

Secretory products are wrapped in membrane bound vesicles to the apical surface and released via exocytosis.

26
Q

What is the method of secretion for an Holocrine cell?

A

The secretory product builds up inside of a cell to the point where the cell ruptures, releasing the product along with cell debris.

27
Q

What is the method of secretion for an Apocrine cell?

A

The secretory product is released along with the Apical portion of the cell. The secretory product will be within the cytoplasm surrounded by the plasma membrane of the Apical portion of the cell.

28
Q

What is the example given for a Unicellular Gland?

A

Goblet Cell

29
Q

What function does a Goblet Cell perform?

A

Secretes mucus into the GI tract.

30
Q

What is another name for the secretory portion of a multicellular gland?

A

The Acinus

31
Q

What sort of secretions are formed in the Parotid Gland?

A

Serous

32
Q

What sort of secretions are formed in the Sublingual Gland?

A

Mucous

33
Q

What kind of secretions are formed in the Submandibular Gland?

A

Both Serous and Mucous

03. MSK Test 1 (18 decks)

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