Practice Set 2A Flashcards

1
Q

What is the major producer of blood cells?

A

Red bone marrow

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2
Q

Osseous tissue is a connective tissue with a hardened matrix that makes up organs called ________.

A

bones.

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3
Q

Where do you find osteogenic cells?

A

Endosteum and periosteum

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4
Q

True or false: The bone cells responsible for the formation of the organic bone matrix are called chondrocytes.

A

False. Reason: Chondrocytes produce and maintain the cartilaginous matrix. Osteoblasts are the cells that deposit bone matrix and eventually become osteocytes.

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5
Q

What is the hollow space in which an osteocyte resides called?

A

Lacuna

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6
Q

Which are functions of the skeletal system?

A

Blood formation, Protection, Support, Acid-base balance

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7
Q

The connective tissue that makes up bone is called ______ tissue.

A

osseous

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8
Q

Mature bone cells found within lacunae of compact bone are called

A

osteocytes

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9
Q

True or false: Osteogenic cells are stem cells in the endosteum, periosteum, and central canals that can become chondrocytes.

A

False. Reason: Osteogenic cells are stem cells in the endosteum, periosteum, and central canals that can become osteoblasts rather than chondrocytes.

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10
Q

Osteoblasts secrete the hormone ______.

A

osteocalcin

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11
Q

What is the purpose of the canaliculi in compact bone?

A

To provide a passageway between the lacunae

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12
Q

Which of the following describes the lacunae of osseous tissue?

A

Spaces between lamellae that contain osteocytes

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13
Q

True or false: Osteocytes and osteoclasts develop from the same type of stem cell.

A

False. Reason: Osteogenic cells, osteoblasts, and osteocytes all belong to one cell lineage, but osteoclasts have an independent origin.

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14
Q

What are mature bone cells found within lacunae of compact bone called?

A

Osteocytes

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15
Q

The calcium-phosphate salt that mineralizes bone tissue is called ______.

A

hydroxyapatite

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16
Q

Where do you find osteogenic cells?

A

Endosteum and periosteum

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17
Q

In osseous tissue, the narrow channels connecting neighboring lacunae are called

A

canaliculi

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18
Q

What is the hollow space in which an osteocyte resides called?

A

Lacuna

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19
Q

The action carried out by osteoclasts is ______.

A

osteolysis

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20
Q

Which is part of the inorganic matter that makes up the matrix of bone?

A

Calcium phosphate salt

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21
Q

True or false: Osteogenic cells are stem cells in the endosteum, periosteum, and central canals that can become chondrocytes.

A

False. Reason: Osteogenic cells are stem cells in the endosteum, periosteum, and central canals that can become osteoblasts rather than chondrocytes.

22
Q

Lacunae are located between concentric rings of compact bone tissue called what?

A

Lamellae.

23
Q

True or false: Osteocytes and osteoclasts develop from the same type of stem cell.

A

False

24
Q

Stem cells in developing bone that give rise to osteoblasts are called _______ cells.

A

osteogenic

25
Q

Within compact bone, a central canal is found at the center of which structure?

A

An osteon

26
Q

Another term for a central canal is a(n) _______ canal.

A

haversian

27
Q

What are the layers of bony matrix in compact bone tissue called?

A

Lamellae

28
Q

Which channels run perpendicular to the central canals of osteons?

A

Perforating canals

29
Q

The basic structural unit of compact bone is the ______.

A

osteon

30
Q

What is the name for a channel that extends longitudinally through the center of an osteon?

A

Central canal, Haversian canal

31
Q

The layers of bony matrix arranged around the central canal of an osteon are called ______ lamellae.

A

concentric

32
Q

What are the thin plates forming spongy bone called?

A

trabeculae

33
Q

Central and perforating canals are lined with ______.

A

endosteum

34
Q

In longitudinal views, osteons are ______.

A

cylinders

35
Q

During intramembranous ossification, bone matrix is deposited by which type of cells?

A

Osteoblasts

36
Q

Trabeculae and spicules are found in ________

A

spongy bone.

37
Q

Where does bone formation occur during endochondral ossification?

A

Hyaline cartilage model

38
Q

Which channels run perpendicular to the central canals of osteons?

A

Perforating canals

39
Q

As a flat bone is produced by intramembranous ossification, which cells are responsible for the resorption of bone tissue that carves out the spongy bone’s trabeculae?

A

Osteoclasts

40
Q

Where is the primary ossification center during endochondral ossification in a long bone?

A

Diaphysis

41
Q

The skull, vertebral column, and rib cage comprise the

A

axial skeleton.

42
Q

The cartilage that is the tissue which is replaced with bone during endochondral ossification is ________ cartilage.

A

hyaline

43
Q

The limb bones and their girdles comprise the ______ skeleton.

A

appendicular

44
Q

How many bones does the skeleton typically contain at birth?

A

270

45
Q

The axial skeleton can be defined as which of the following?

A

The bones of the supporting central axis of the body

46
Q

The patella is an example of a ________ bone, one that forms within a tendon due to stress.

A

sesamoid

47
Q

What color is the appendicular skeleton in this figure?

A

Green

48
Q

Which of following is a true statement and explains why the number of bones varies with age?

A

Many bones fuse together during development, resulting in fewer bones in the adult.

49
Q

During endochondral ossification, where does the primary ossification center form?

A

Diaphysis

50
Q

Which type of bone forms within a tendon due to stress?

A

Sesamoid