Exam 3 Flashcards
What are Carnegie Stages?
First 9 weeks, not dependent on age/size, dependent on external/internal morphology development
Human Growth Pattern
Begins at conception, non-linear, deviations=major developmental issues, Canalized=on a tightly programmed course, Variation=problem, Natural selection acts against variation of this type
Senescence
Is a biological, chemical and cellular change process than can be harmful
Cellular Level: Enlarge and flatten and membrane rigidity increases, gene expression changes
Aging
number, social system
Embryonic Period
3-8 weeks, cephalic-caudal (head to tail), Limbs, eyes, ears, reproductive organs
Sex Differences (Sexual Dimorphism)
Start the same, Femals have growth spirt earlier, then boys grow bigger
Post-Natal Growth Stages
- Infancy
- 0-2 - Childhood
- 2-12
- Juvenile period 7-puberty (“pre-puberty”) - Adolescence
- begins with puberty, growth spurt, and adulthood
Adipose Tissue (AT)
- Firm Fat
- White AT: Result of storing excess calories
- Brown AT: Metabolically active, heat production
Immune System Growth
- In utero it’s reliant on mom’s immune system, then depends on colostrum (begining breast milk), then individual development
Neurological Growth
- 95% adult size by age 6
- first thing to begin development
Thymus
An organ that allows for T cells to grow and multiply, part of the lymphatic system.
Fetal Period
8-9 weeks full term, Major growth in size; organ and heigh, non linear growth
Critical Periods in Development
Period of the Ovum: 1-2 (weeks)
Period of the Embryo: 3-8
Period of the Fetus: 12-38
What is Adiposity?
Being severely overweight, is environmental (stress in utero)
“Thrifty” Phenotype
Adiposity, is environmental stress in utero impacts how DNA is read and will “pre-adapt” to the current stress for future environment
