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ANSC 301 > Bone Lecture > Flashcards

Bone Lecture Flashcards

1
Q

Why is bone growth important to meat animal ag? 2 answers)

A

Skeletal Muscle determines frame size and size of carcass is related to skeletal size

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2
Q

Is bone growth a connective tissue?

A

Yes

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3
Q

What are bones 5 functions?

A

Structural soundness, locomotion, protection, carcass size, and storage

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4
Q

What is osteogenesis?

A

Formation of bone

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5
Q

Does bone form prenatally or postnatally?

A

Both

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6
Q

What is cortical bone?

A

Bone found in shafts of skeletal bone

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7
Q

What is cancellous bone?

A

Bone found on axial skeleton and epiphyses on bones

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8
Q

What is medullary bone?

A

Found in birds. Metabolically active to provide rapid source of calcium for egg shell development

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9
Q

Where are osteoblasts derived from?

A

Mesenchymal cells from mesoderm

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10
Q

What are osteocytes?

A

Mature osteoblasts that maintain bone matrix

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11
Q

How many osteocytes are there in relation to osteoblasts?

A

10x more osteoblasts

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12
Q

What is function of chondrocytes?

A

Form cartilage required for bone growth

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13
Q

What is function of osteoclasts?

A

Bone reabsorption and remodeling

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14
Q

What regulatory factor is associated with osteoclasts?

A

RankL

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15
Q

What regulatory factor is associated with chondrocytes?

A

Sox9

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16
Q

What is endochondral ossification?

A

Replacement of cartilage with bone. Prenatal cartilage structure serves as template

17
Q

What is intramembranous ossification?

A

Formation of bone by replacing connective tissue in absence of cartilage.

18
Q

What does the makeup of an Osteoclast look like?

A

Large multinucleated cell with 50 or more nuclei.

19
Q

Why is bone marrow formed?

A

Result of osteoclast activity

20
Q

Where is red bone marrow found?

A

In spongy bone of long bones. Chief blood cell forming organ.

21
Q

Where is yellow bone marrow found?

A

Found in medullary cavity. Composed of adipose tissue.

ANSC 301 (5 decks)

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