Day 1-2 (Cells, Matrix, Ossification, Density, Variation; Bone Classification; Bone Surface Features) Flashcards Preview

Spinal (2) Lecture (Mine) > Day 1-2 (Cells, Matrix, Ossification, Density, Variation; Bone Classification; Bone Surface Features) > Flashcards

Flashcards in Day 1-2 (Cells, Matrix, Ossification, Density, Variation; Bone Classification; Bone Surface Features) Deck (35):
1

What are the four tissues of the human body?

epithelial, muscle, neural & connective tissue

2

What is the function of each type of bone cell?

osteoblast-form bone
osteocyte-maintain or nurture bone
osteoclast- remodel bone

3

What is the primary constituent of the ground substance?

glycosaminoglycans

4

What is the principal type of protein fiber in bone?

collagen type I

5

What is the most frequently described deposit in bone?

hydroxyapatite

6

What is Wolff's Law as it pertains to bone?

living tissue will respond to stressors; bone is formed or absorbed in response to stress

7

What are the three responses of bone which allow it to be described as "living"?

it has the ability to heal, to remodel under stressors and to age

8

What is bone the embryological derivative of?

mesenchyme or cartilage

9

What is the name given to the pattern of ossification in mesenchyme?

intramembranous ossification

10

What is the timing for the appearance of intramembranous ossification?

from the second to third month in utero

11

What is the timing for the appearance of ossification in cartilage?

from the second to fifth month in utero

12

What part of the skull is derived from endochondral ossification?

chondrocranium

13

What bone of the appendicular skeleton is formed by both endochondral and intramembranous ossification?

the clavicle

14

What are the primary sources of variation observed in bone?

gender variation (sexual dimorphism), ontogenetic variation (growth or age variation), geographic or population-based variation (ethnic variation) and idiosyncratic variation (individual variation)

15

What is the characteristic feature of a long bone?

it is longer than it is across (length greater than breadth)

16

What are the names given to the parts of a long bone?

the diaphysis (shaft) and typically two epiphyses (extremities)

17

What is the primary characteristic of short bones?

they are essentially cubodial

18

What are examples of short bones?

most of the bones of the carpus and tarsus

19

What are examples of flat bones?

the parietal bone and sternum

20

What are examples of pneumatic bone?

frontal, ethmoid, maxilla, sphenoid & temporal

21

What is the characteristic of sesamoid bone?

the bone develops within a tendon

22

What are consistent examples of sesamoid bones?

patella and pisiform

23

What are the four basic surface feature categories?

elevations, depressions, tunnels or passageways & facets

24

When do the surface features of bone become prominent?

during and after puberty

25

What are they types of osseous linear elevations?

the line ridge and crest

26

What are the types of rounded osseous elevations?

tubercle, protuberance, trochanter, tuber or tuberosity and malleolus

27

What are the categories of sharp osseous elevations?

spine and process

28

What are the categories of osseous depressions?

linear and rounded depressions

29

What are the categories of osseous linear depressions?

notch or incisure, groove, and sulcus

30

What are the categories of rounded osseous depressions?

the fovea and fossa

31

What are the names given to openings on the surface of bone?

ostium or orifice and hiatus

32

What are the names given to osseous ostia which completely penetrate bone?

foramen or canal

33

What is the definition of an osseous foramen?

an ostium passing completely through a thin region of bone

34

What is the definition of an osseous canal?

an ostium passing completely through a thick region of bone

35

What is the name given to an ostium which does not completely penetrate through a region of bone but appears as a blind-ended passageway?

meatus

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