The Skeletal System Flashcards

1
Q

Hemopoiesis

A

Occurs in the red bone marrow

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2
Q

Triglyceride storage

A

Where we make adipocytes in YELLOW bone marrow

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3
Q

Red bone marrow VS. Yellow bone marrow

A

Red bone marrow is to there to make stem cells for blood and yellow bone marrow is going to be storage of fat

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4
Q

Red Bone Marrow- Hemopoiesis

A

The red bone marrow is going to be the place where Hemopoiesis takes place, red bone marrow contains stem cells they undergo mitosis

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5
Q

Yellow bone Marrow

A

Found in shaft of the bone, Lipid Storage

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6
Q

Short, flat, and i irregular bones, composed, mainly of inner SPONGY bone with outer layer of COMPACT bone. Spongy bone is also located at the EPIPHYSES of long bones.

A

Some spongy bone are filled with RED BONE MARROW this is to allow for hemetopoisis or the production of blood cells to occur.

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7
Q

Bones hardness…

A

Dependson the crystallized inorganic mineral salts, if you remove the mineral salts from bone it is rubbery

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8
Q

Calcification

A

The process of this crystallization of the mineral salts in order to cause those cells to bindand build together this gives the hardness

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9
Q

Bone flexibility…

A

Comes from the collagen fibers The bones flex, before they actually break

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10
Q

Osteoprogenitor (or Osteogenic) Cells

A

Stem cells, undergo mitosis, they produce osteoblasts, inner layer of periosteum

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11
Q

Osteoblasts

A

Not cable of mitosis, bone builders, initiate calcification, blasts will be walled Off. MAKES THE MATRIX

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12
Q

Osteocytes

A

Found in lacunae, there to maintain the area. MAINTAINS THE MATRIX.

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13
Q

Osteoclasts

A

The bone destroying cells break apart the calcium and release it back to the blood

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14
Q

Osteoporosis

A

The amount of bone breaking down should equal the amount of bone building up. The problem is whenever the OSTEOCLASTS start to tear down bone faster than the BLASTS can build.

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15
Q

Bone Deposition

A

Associated with osteoblasts on the periosteum side of the bone.

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16
Q

Bone resorption

A

Associated with the osteoclasts in endosteum part of the bone the inside

17
Q

Periosteum

A

The bone covering, a thin layer, this is made of dense connective tissue on the outside and the osteogenic layer on the inside

18
Q

Compact Bone. →

A

Outer portion, composed of osteons

19
Q

Osteon

A

Run parallel to the diaphysis, has the lacunae in the middle

20
Q

Lamallae

A

Calcified matrix, concentric lamallae: goes around the osteon, interstitial lamellae: oldest, fills in spaces around osteon,circumferential lamellae: goes all theway around the bone

21
Q

Lacunae

A

Space within the lamellae, where the osteocyte is going to be found.

22
Q

Osteocyte

A

The mature blood cell

23
Q

Canaliculi

A

Connects one lacunae to the next

24
Q

Perforating (Volkmann’s) canals

A

Will run transverse, connect to the central canals

25
Q

Central (Haversian) canals

A

Run parallel up and down with the octeons contain blood and lymph vessels and nerves

26
Q

Spongy (cancellous) bone

A

Contains red bone marrow, protected by compact bone

27
Q

trabeculae

A

Thin columns of lamellae arranged in irregular patterns

28
Q

Bone formation (AKA osteogenesis)

A

Ossification: process by which bone forms, interstitial and appositional growth, repair of bone fractures

29
Q

Intramembranous ossification

A

Occurs in flat bones of skull, form in a sheet

30
Q

Fontanel’S

A

“Soft spots”in newborn skulls, intramembranous ossification has not been completed.

31
Q

Endochondral ossification

A

Process used to produce the majority of the other bones from cartilage (long bones)

32
Q

Interstitial growth

A

Adds length to the bone this going is to happen at those epiphyseal or growth plates

33
Q

Appositional growth

A

Add thickness or girth to the bones

34
Q

Calcitonin promotes…

A

Bone deposition (osteoblasts) increases the uptake of calcium into the bone, decreases calcium in blood

35
Q

PTH promotes…

A

Bone resorption (osteoclasts), decrease calcium in the bone, increase calcium in the blood

36
Q

Osteoporosis

A

Spongy bone is affected first, affects woman more at a higher risk especially after they have gone through menopausal