General Concepts of Growth (CF12-14)

Question 1

The cranial vault develops via intramembranous ossification. The mandible and maxilla develop via endochondrial ossification.

Accepted Answer

First true, second false

Answer

Both true

Answer

First false, second true

Answer

Both false.

Question 2

The flat bones in our bodies develop via endochondrial ossification. The long bones of our bodies develop via intramembranous ossification.

Accepted Answer

Both false

Answer

Both true

Answer

First true, second false

Answer

First false, second true

Question 3

The resorption reversal line is where resorption takes place. Idiopathic condylar resportion causes a large overbite, open bite, and a smaller looking mandible.

Accepted Answer

First false, second true

Answer

Both true

Answer

First true, second false

Answer

Both false

Question 4

Secondary displacement is the movement of a bone and its soft tissues not related to its own enlargement. Growth of the middle cranial fossa and the temporal lobe directs the nasomaxillary complex downward and forward.

Accepted Answer

Both true

Answer

First true, second false

Answer

First false, second true

Answer

Both false

Question 5

Which of the following is incorrect about mandibular development?

Accepted Answer

Horizontal expansion occurs via deposition on the external side

Answer

Resorption occurs at the anterior of the ramus and gonial angle

Answer

Deposition occurs at the condylar surface and coronoid process

Answer

Deposition makes the mandible grow upward and backwards

Answer

All of the above are correct

Question 6

Which of the following is correct about remodeling of the maxilla?

Accepted Answer

Resorption of the endochondral or endosteal section of the cortical plate

Answer

Resorption on the periosteal surface of the palatal surface

Answer

The anterior surfaces of the maxilla have deposition

Answer

Deposition in the nasal base

Answer

none of the above

Question 7

Drifting, relocation, and V principle occur simultaneously. The mandible moves downward and forward because of anterior apposition?

Accepted Answer

First true, second false

Answer

Both true

Answer

First false, second true

Answer

Both false

Question 8

Which of the following is incorrect?

Accepted Answer

Longitudinal studies allow estimation of the mean rate of growth for a population

Answer

Longitudinal studies allow for accurate prediction of adult height due to ability to see individual variations in the growth curve

Answer

Cross-sectional studies can be used to estimate mean rate of growth

Answer

Mixed longitudinal studies involve the short time of a cross sectional study and large sample size with subjects in different age groups to achieve data covering a greater span of ages

Answer

Cross sectional studies contain variability which may conceal details of growth

Question 9

The distance curve is height plotted against time and the velocity curve is the rate of growth. Menarche occurs after the peak of the velocity curve.

Accepted Answer

Both true

Answer

First true, second false

Answer

First false, second true

Answer

Both false

Question 10

The cranial base solidifies at 6-7 years of age. By adulthood, the head is roughly 1/8th of the total height and legs make up roughly half.

Accepted Answer

Both statements are true

Answer

First true, second false

Answer

First false, second true

Answer

Both false

Question 11

At infancy the head is roughly a third of the body's total length. Similarly, the face makes up about half of the head.

Accepted Answer

Both false

Answer

Both true

Answer

First true, second false

Answer

First false, second true

Question 12

According to Scammon's curve, the lymphoid tissues reach roughly double the adult size near 10 years of age. The genitals reach their full size during the onset of puberty.

Accepted Answer

First true, second false

Answer

Both true

Answer

First false, second true

Answer

Both false

Question 13

Which of the following is NOT a consequence of mouth breathing?

Accepted Answer

Mandible downward and forward

Answer

Periodontal disease

Answer

Higher risk of caries

Answer

Open bite

Answer

Irritation of the gums

Question 14

There is more variation in height than weight measurement. Peak velocity for weight spurt leads the peak velocity for height by an average of 3 months.

Accepted Answer

Both false

Answer

Both true

Answer

First true, second false

Answer

First false, second true

Question 15

Menarche in females occurs after the peak velocity of growth. Males tend to have their peak growth velocity before females.

Accepted Answer

First true, second false

Answer

Both true

Answer

First false, second true

Answer

Both false

Question 16

Chronological age is a good indicator of individual growth status. Growth is complete when the sesamoid bone is present.

Accepted Answer

First false, second true

Answer

Both true

Answer

First true, second false

Answer

Both false

Question 17

Which of the following is incorrect?

Accepted Answer

The nasal septum is not a growth center

Answer

In sutural growth theory, the sutures are the primary growth sites.

Answer

Primary cartilage theory states that periosteum and cartilage are primary growth sites

Answer

The condyle of the mandible considered the pacemaker of growth for mandibular development in primary cartilage theory

Answer

Growth of the skull follows growth of the brain

Question 18

The functional matrix is soft tissue to include the cartilage and ligaments. The skeletal units includes the bone.

Accepted Answer

First false, second true

Answer

Both true

Answer

First true, second false

Answer

Both false

Question 19

A growth site is where growth is initiated. A growth center is a reactive place where growth occurs.

Accepted Answer

Both false

Answer

Both true

Answer

First true, second false

Answer

First false, second true

Question 20

Teeth are part of the skeletal unit. Muscles are part of the functional matrix.

Accepted Answer

First false, second true

Answer

Both true

Answer

First true, second false

Answer

Both false

General Concepts of Growth (CF12-14)

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