Exam 1 - Cells, Matrix, Ossification, Bone Density, Bone Variation Flashcards Preview

Spinal Anatomy > Exam 1 - Cells, Matrix, Ossification, Bone Density, Bone Variation > Flashcards

Flashcards in Exam 1 - Cells, Matrix, Ossification, Bone Density, Bone Variation Deck (17):
1

What are the four basic tissues of the basic 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 are the bone cells embedded in?

An amorphous matrix consisting of ground substance, protein fibers, and various minerals

4

What is the principal type of protein fiber in bone?

collagen type 1

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 various stressors

7

What three responses to "living" bone were stressed in class?

Remodel under stressors
Age
Heal

8

Bone is the embryological derivative of which specific connective tissues?

mesenchyme and/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 part of the axial skeletone is primarily formed by intramembranous ossification?

the skull

12

Which bone of the appendicular skeleton is partially formed by intramembranous ossification?

the clavicle

13

What is the name given to the pattern of ossifcation in cartilage?

endochondral ossification

14

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

from the second to fifth month in utero

15

What part of the skull is derived from endochondral ossification?

the chondrocranium

16

What are the names given to the centers of ossification based on time of appearance?

Primary centers of ossification appear before birth
Secondary centeres of ossifcation appear after birth

17

What are the primary sources of variation observed in bone?

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