L.1 Growth & Development Flashcards
At birth the head is what percent of the overall body?
25%!!
TERM: the progressive development from an early stage to maturity, including the attendant increase in size.
Growth
TERM: the series of changes through which the individual becomes a mature organism. This refers to increase in skill and complexity of function.
Development
______ is primarily anatomic, whereas _________ is physiologic and behavioral
Growth…. Development
TERM: refers to change in the level of organization and qualitative content in a developing system.
Maturity
What is the preferred method for assessing skeletal age? Which direction do you look in this method?
hand-wrist film…from the proximal wrist to the distal fingers
What are the three methods of determining DENTAL AGE?
- Teeth erupted 2.Primary Root Resorption 3.Permanent Root Development
When observing common height growth patterns, when do the extremities catch up with head size? When do they equal out in growth rate?
at 6 months extremities start growing faster, they even out at pooberty
When is the most head circumference increase?
in the first year (4” of growth)
At about what age does NEURAL growth plateau?
at about 8 years old
When is the height of LYMPHOID tissue development? What implications might this have for a patient in your chair?
10 years…a 10 year old patient might have really big tonsils and that’s NORMAL (200% of adult size)
When does the bulk of genital growth occur?
pooberty….ages 12+
Which develops to full size faster: the mandible or the maxilla?
the maxilla-its associated with the cranial complex (which develops first!)
When does the general closure of fontanelles occur?
2 years old
What type of growth occurs across the fontanelles to make sure they close?
Appositional growth
What is the term for premature fusion of the fontanelles? What can this lead to?
Cranial Synostosis..leads to asymmetrical head shape
What is the term for cartilage being replaced by bone? WHAT IS THE ONLY AREA TO REMAIN ACITVE IN CHILDHOOD?
EndoCHONDRAL Ossification (self explanatory, right?!)…Spheno-Occipital growth base
What is the method of bone development of the maxilla?
INTRAMEMBRANOUS OSSIFICIATION
Where is the growth occurring during the development of the maxilla? Which direction does this cause it to move?
Growing a the cranial base by apposition and remodeling…forced out downward and forward
What are the two methods of growth for the mandible?
EndoCHONDRIAL Ossification AND Intramembraneous Ossification
What directions do the CHIN grow?
Downward and Forward
What directions do the condyles grow?
Upward and backward
Which direction does the RAMUS grow?
Away from the chin
If you put a dot on the condyle of an undeveloped mandible, where will it end up on a fully developed mandible?
it will end op on the coronoid notch (just meant to show how the mandible grows)
