Integrating Cells into Tissues Flashcards

1
Q

In the lateral domain how do cells remained attached to each other?

A

tight junction, desmosomes, gap junction

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2
Q

What is the basal domain?

A

bottom section of a cell where it attaches to the basement membrane

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3
Q

Name the ways a cell anchor in the basal domain

A

hemidesmosomes, focal adhesions

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4
Q

What is the function of a tight junction?

A

seal between 2 cells

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5
Q

What is the role of a desmosome?

A

strengthen the junction between 2 cells

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6
Q

What does a gap junction allow cell to do?

A

connection proteins form channels, allowing communication

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7
Q

Name and explain the function of the extensions in the apical domain

A

microvilli: increase surface area, stereovilli: epididymis and sensory hair cells in the ear, cilia: motile

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8
Q

Name the protein that attaches the cell cytoskeleton to extracellular matrix

A

integrins

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9
Q

List the ways cells can communicate

A

DIRECT: gap junctions, AUTOCRINE: to self, PARACRINE: next to, ENDOCRINE: secreted into blood, SYNAPTIC: electrical signal along nerves neurotransmitter, NEUROCRINE: electrical signal down nerve releasing neurotransmitter to blood

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10
Q

What does senescence mean?

A

loss of a cell’s power of division and growth due to short telomere length

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11
Q

What is the difference between endo and exocytosis?

A

endo: into the cell, exo: out of the cell

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12
Q

What is the name given to cell that do not have a surface and give example?

A

epithelioid: islets of Langerhans, parenchyma of adrenal glands

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13
Q

What is a fibroblast?

A

synthesise and secret ground substance and fibres procollagen –> collagen (vit C required), involved in wound healing

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