Definitions Flashcards

0
Q

Osteon

A

A system of interconnecting canals in the microscopic structure of adult compact bones ( unit of bone)

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1
Q

Osteocytes

A

A mature bone cell

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2
Q

Periosteum

A

Double layered connective tissue that covers and nourishes the bone

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3
Q

Osteoblasts

A

Bone forming cells

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4
Q

Osteoclasts

A

Large cells that reabsorb or breakdown bone matrix

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5
Q

Tubercle

A

Small, rounded projection or process (ex. Humerus(greater/lesser), adductor(knee)

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6
Q

Tuberosity

A

Large rounded projection, may be roughened(ex. Tibia or deltoid)

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7
Q

Trochanter

A

Very large, blunt, irregularly shaped process (ex. Only on the femur)

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8
Q

Crest

A

Narrow ridge of bone, usually prominent (ex. Iliac crest anterior crest(shin)).

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9
Q

Epicondyle

A

Raised area on or above a condyle (ex. Above condyle of femur or humerus).

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10
Q

Spine

A

Sharp, slender, often pointed projection (ex. Spine of scapula, vertebral spine).

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11
Q

Process

A

Any bony prominence (ex. Spinous process, corocoid process).

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12
Q

Line

A

Narrow ridge of bone, less prominent than a crest ( ex. In between trochanters).

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13
Q

Head

A

Bony expansion carried on a narrow neck (ex. On the ends of femur or humerus).

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14
Q

Facet

A

Smooth, nearly flat articulate surface (ex. Where ribs attach to the vertebra)

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15
Q

Condyle

A

Rounded articulate projection(end of bone) (ex. Mandible( near ears), end of humerus, femur or tibia)

16
Q

Ramus

A

Arm-like bar of bone (ex. Mandible/ pubis)

17
Q

Sinus

A

Cavity within a bone filled with air and lined with mucous membrane(ex. Frontal, nose, ethmoid)

18
Q

Fissure

A

Narrow, slit-like opening(ex. Eye socket)

19
Q

Groove

A

Furrow(ex. Mandible or humerous)

20
Q

Meatus

A

Canal-like passageway(ex. Auditory meatus (your ear)).

21
Q

Fossa

A

Shallow, basin- like depression in a bone, often serving as an articular surface(ex. Supraspinous, sub scapular).

22
Q

Notch

A

Groove or space for structures to lie in(ex. Sternal notch).