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NU intro a&p > Bones > Flashcards

Bones Flashcards

1
Q

Epiphysis

A

Ends of bone

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2
Q

Articulate cartilage

A

Layer of hyaline cartilage cover epiphysis. Reduces friction and absorbs shock

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3
Q

Periosteum

A

Tough connective tissue sheath that provides blood supply. Protects, repairs, nourish and attach ligaments and tendons

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4
Q

Medullary cavity

A

In diaphysis. Contains yellow narrow

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5
Q

Endosteum

A

Thin layer that’s lines medullary cavity

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6
Q

Osteoprogenitor crll

A

Unspecified cells that can divide

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7
Q

Osteoblasts

A

Forms bone. Secretes collagen fibers for strength

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8
Q

Osteoclasts

A

Bone cell. Maintains cell activity

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9
Q

Osteoclasts

A

Bone breakers

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10
Q

Resorption

A

Breakdown of bone to repair bone

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11
Q

Epiphyseal line

A

Remnant of epiphyseal plate

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12
Q

Epiphyseal plate

A

Growth plate. Hyaline cartilage. In metaphysis

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13
Q

Compact bone

A

Protects, supports and resists stress by weight and movement

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14
Q

Spongy bone

A

Contains trabeculae. Filled with red bone marrow and produces blood cells

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15
Q

Canaliculi

A

Small canals in bone that connect lacunae

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16
Q

Diarthroses

A

Freely moveable joints

17
Q

Amphiarthroses

A

Slightly moveable joints

18
Q

Synarthroses

A

Immovable joints

19
Q

PTH

A

Parathyroid gland. Stimulates osteoclasts to break bone and increase blood calcium level.

Low blood calcium level - PTH released Osteoclasts to break bone - calcium goes in blood stream

20
Q

Calcitonin

A

Thyroid gland. High calcium levels stimulates osteoblasts for bone deposition.

High blood calcium levels - calcitonin release osteoblasts to form bone - calcium goes in bone and out of blood

21
Q

Structural classification of joints

A

Fibrous, cartilaginous, synovial

22
Q

Functional classification of joints

A

(Joint movement)

Synarthroses, amphiarthroses, diarthroses

23
Q

Diaphysis

A

Bone shaft

24
Q

Intramembranous ossification

A

Osteoblasts secret matrix - calcium/salts absorbed and matrixs hardens (calcifies) - trabeculea develops and forms spongy bone - development of periosteum

25
Q

Endochondral ossification

A

Development of cartilage by chondroblasts - cartilage grows from cell division of chondrocytes - (primary) bone (diaphysis) replaces most cartilage - bone breakdown forms medullary cavity - (secondary) occurs in epiphysis - articular cartilage and epiphyseal plate form

NU intro a&p (7 decks)

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