Curves of Column: Normal Curvature Flashcards Preview

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Flashcards in Curves of Column: Normal Curvature Deck (24):
1

Why is the posterior curve also called the primary curve?

it is the first curve to appear embryologically

2

What are the remnants of the primary curve along the vertebral column?

the thoracic or dorsal curve and the pelvic or sacrococcygeal curve

3

What are the names given to curves that form during development to reverse the direction of regions along the vertebral column?

Anterior curve, secondary curve, compensatory curve

4

What are the names of the anterior curves, secondary curves, and compensatory curves?

cervical curve and lumbar curve

5

At what age will the infant begin to hold the head erect?

usually between the third and fourth month after birth

6

What is the name given to the integration of visual and motor pathways associated with holding the head erect?

the righting reflex

7

What is the location for the cervical kyphosis?

between occiput and C1

8

What infant activities are associated with the development of the lumbar curve?

crawling and walking

9

Which sense is a requirement for holding the head erect, standing, sitting, and walking?

vision

10

What is the gender bias associated with lumbar curve convexity?

females have a greater convexity of the lumbar curve

11

What is the vertebral relationship between the lumbar curve and the lumbar enlargement?

lumbar curve T12-L5; lumbar enlargement T9-T12

12

What is the relationship between curve direction and handedness?

a right-handed person has a high probability for a right thoracic, left lumbar curve combination

13

What embryonic event causes the direction of the posterior curve of the vertebral column?

the embryonic disc will undergo flexion in a cranial to caudal direction

14

What is the time of appearance of the lateral curves?

they appear after 6 years old

15

What developmental events are indicated in the formation of the adult lumbar curve?

1. crawling will cause the abdomen to put tension on the lumbar region and pulls it forward
2. muscle development is promoted to compensate for the swayback of the lumbars
3. intervertebral disc height will become greater anterior compared to posterior
4. walking will further promote muscle and intervertebral disc development

16

What segment levels form the cervical curve?

C2 - T1

17

What segmental levels form the lumbar curve?

T12 - L5

18

What is the earliest time of appearance of the cervical curve?

the third fetal month

19

What is the transitional time of appearance of the cervical curve said to be?

during the last trimester in utero

20

What is the time during which the "adult" cervical curve is said to appear?

within the first year after birth

21

What developmental events are indicated in the formation of the adult cervical curve?

1. centers for vision and equilibrium will appear in the brain
2. musculature attaching the skull, cervical region, and upper thorax together develops
3. the head is held upright
4. the intervertebral disc height becomes greater anterior than posterior

22

What is the location for the apex of the cervical curve?

typically between C4 and C5

23

What is the vertebral relationship between the cervical curve and the cervical enlargement?

cervical curve C2-T1; cervical enlargement C3-T1

24

What is the time of appearance of the lumbar curve?

between 12 and 18 months after birth

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