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Histology > Exam 1 – Lecture 10: Bone > Flashcards

Exam 1 – Lecture 10: Bone Flashcards

1
Q

What is within an osteon?

A 
Central canal
Lamellae
Lacunae
Canaliculi
Perforating canal
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2
Q

What do osteoblasts secrete?

A

Matrix type 1 collagen

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3
Q

What do osteoblasts do?

A

Calcification

Bone-lining

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4
Q

What are osteocytes?

A

Mature bone cell within lacuna

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5
Q

What does the lacuna of osteocytes do?

A

Sends out cell processes

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6
Q

What do osteoclasts do?

A

Bone resorption

Endocytotic absorption

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7
Q

What do osteoclasts contain?

A

Howslip’s (howship’s) lacuna

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8
Q

What kind of cells are osteoclasts?

A

Mononuclear hematopoeitic progenitor cells

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9
Q

What does the ruffled border of osteoclasts allow for?

A

Active
Hydrolases
Protons

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10
Q

What are the 2 types of bone formation?

A

Endochondral

Intramembranous

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11
Q

What goes through endochondral formation?

A

Long bones
Hyaline cartilage
Epiphyseal

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12
Q

What goes through intramembranous formation?

A

Flat bones
Mesenchymal
Subperiosteal
Spicules, trabeculae

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13
Q

What is bone remodeling and mineralization like?

A

Constant process that is cell-regulated/extracellular

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14
Q

What increases during bone remodeling and mineralization?

A

Parathyroid hormone

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15
Q

What causes bone remodeling and mineralization?

A

Calcitonin

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16
Q

What does adipose tissue do?

A

Energy homeostasis

17
Q

What is most of what is stored in adipose tissue?

A

Triglycerides

18
Q

What are the 2 forms of adipose tissue?

A

White and brown fat

19
Q

What is white adipose tissue like?

A

Unilocular

One large cell

20
Q

What is white adipose tissue used for?

A

Energy storage
Insulation
Cushion vital organs
Produce hormones

21
Q

What does white adipose tissue line up in?

A

Panniculus

22
Q

What is brown fat like?

A

Multilocular

23
Q

What is brown fat used for?

A

Thermogenesis

24
Q

Where is brown fat usually located?

A

In axilla, inguinal regions, and the base of the heart

25
Q

What are osteoblasts like?

A

Cuboidal
Basophilic cytoplasm
Prominent golgi
Gap junctions

26
Q

Why is the cytoplasm of osteoblasts basophilic?

A

There is so much nucleic acid that they are constantly laying downs ostioles to make protein

Histology (30 decks)

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