Growth and Development Flashcards
T/F Growth and development is fundamental for all living creatures
True
what is growth and development defined as?
general and normal-size expansion as produced by the accretion of tissue like the original tissue organ
what is growth specifically defined as?
as an increase in the body size or mass and the acclamation of tissue (muscle, bone, and adipose)
what is development specifically defined as?
the progression of an organism from a single cell to a fully formed, mature individual
what is true growth?
true growth refers explicitly to the increase in body weight resulting from an increase in the structural tissues
what 3 things is true growth achieved through?
hyperplasia, hypertrophy, and accretion
what does hyperplasia do?
increase in tissue associated with cell proliferation (cell numbers)
what does hypertrophy do?
increase in the size of cells
what does accretion do?
enlargement of cell size associated with a gradual building of intracellular components
what does hyperplasia, hypertrophy and accretion do for whole body growth?
Hyperplasia increases in skeletal mass
Hypertrophy increases in connective tissue
Accretion is consider as fattening
T/F hypertrophy and hyperplasia occur in connective tissue
False, its hypertrophy and accretion
T/F age-related adaptation does occur independently
False, it doesnt it occurs via cellular changes
what does individual cellular chanage?
tissue/organs
what is a growth curve?
graphical representation of an animals weight or size over time
what are the phases of the growth curve?
lag, exponential, plateau, and atrophy
what does the growth curve track the progression of?
body weight, tissue accretion, and physiological maturity
where does growth and development start?
in utero
T/F whatever happens in utero is complex but not regulated
False, its complex and highly regulated
T/F whatever happens in utero requires lots of cell divisions
True
what are the three cell potencys?
Totipotent, Pluripotent, and Multipotent
throughout in-utero development, what occurs through the cell cycle?
hyperplasia
what are the two phases of the cell cycle?
interphase and mitotic phase
what are the 3 phases of interphase?
G1, S, and G2
what is G1?
it is the first gap phase which helps with cellular growth and duplication of organelles
