FREE AND STUDY GAMES ABOUT HISTOLOGY EXAM

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FREE AND STUDY GAMES ABOUT HISTOLOGY EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -38 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Which basal domain specialization increases cell surface area and facilitates interactions b/w adjacent cells and extracellular matrix proteins?

Answer:

Basal Cell Membrane Infoldings Question 2: Microvilli contain ______ filaments anchored to _____ in teh top of the microvillus.

Answer:

Actin.Villin.Question 3: ______ ______ is a specialized structure located next to the basal domain of epithelial cells and the underlying connective tissue.

Answer:

Basement Membrane.Question 4: What cell junction type forms a band or seal that completely encircles the cell? This cell junction type is sometimes referred to as what?

Answer:

Zona Occludens.Tight Junctions.

Question 5: Epithelial cells are extremely adherent to each other (CAMSs) and ______ ______ _______ are necessary to seperate tehm.

Answer:

Strong Mechanical Forces.(CAMs - cell adhesion molecules) Question 6: At the contact zone of epithelial cells and the basal lamina what can be found? Their form can be described as _____ of a ______.

Answer:

Hemidesmosomes.Half Desmosome

(**VERY POSSIBLE EXAM Q)

Question 7: A connective tissue that supports, binds epithelium to nearby structures and provides nourishment to the epithelium is known as what?

Answer:

Lamina Propria.Question 8: The _____ domain communicates with adjacent cells and is characterized by specialized attachment sites.

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Lateral domain Question 9: A hemidesmosome is an example of what type of basal cell specialization?

Answer:

Cell-to-Extracellular Matrix Junction Question 10: Stereocilia is very rare; seen only in _____, proximal portions of the ______ ______ and hair cells of the _____ _____.

Answer:

Epididymus.Ductus Deferens.Inner Ear.

Question 11: The actin filaments are crosslinked by _____ and _____ to give rigidity.

Answer:

Fascin and Fimbrin Question 12: The apical domain is capable of having what 3 cytoplasmic processes? Define each of the 3.

Answer:

Microvilli - cytoplasmic process that extend from the cell surface.Stereocilia (Sterovilli) - really long microvilli.(**STEREOCILIA WILL BE ON EXAM) Cilia - motile cytoplasmic processes.Question 13: Epithelial cells exhibit a distinct polarity which means they have an ____ domain, a _____ domain, and a ______ domain.

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Apical Lateral Basal Question 14: What type of cell junction completely encircles the cell? It allows _____ of one cell to the next.

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Zona Adherens.Adhesion.Question 15: The basal domain of epithelial cells is characterized by what 3 specializations?

Answer:

Basement Membrane.Cell-to-Extracellular Matrix Junctions.Basal Cell Membrane Infoldings.Question 16: What is the autoimmune disease in which antibodies are directed against a particular antigen (protein) in hemidesmosomes?

Answer:

Bullous pemphigoid.

Question 17: Hair cells of the inner ear lack both _____ and _____.

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Erzin and alpha-actinin Question 18: This term, which originated in light microscopy, is used only to apply to epithelium.

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Basement Membrane.Question 19: Like microvilli, _____ are supported internally by actin crosslinked by _____.

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Stereocilia.Fibrin.Question 20: What binds the actin filaments to the plasma membrane of the microvillus?

Answer:

Myosin I Question 21: Cilia arms contain _____ _____, a microtubule associated motor protein.

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Ciliary Dynein Question 22: What type of gating mech. are responsible for closing and opening the cytoplasmic domains of gap junction channels?

Answer:

Calcium-Independent.Gating mechanisms.Question 23: The _____ filaments extend down the microvillus where they interact w/ horizontal actin filaments of the ______ _____ at the base of the microvillus.

Answer:

Actin.Terminal Web.