Average birth weight is 7.5 lbs

Infants double birthweight by 4 months

Triple their weight by 12 months

24 months typically weigh 30 lbs

Avg. 2 yr old four times as heavy as at birth

They are 15-20% of their adult weight

between 32 and 36 inches

already half their adult height

at birth=25% of its adult weight

age 2=75% of its adult weight

Dendrites

Intersection?

Dendrite weight?

Expanded growth of dendrites?

A fiber that extends from a neuron and receives electrochemical impulses transmitted from other neurons via their axons. 

They meet at intersections called synapses.

Dendrite growth is the main reason brain weight triples in first two years.

Expanded growth of dendrites in followed by pruning in which unused neurons and misconnected dendrites atrophy and die.

• Sucking reflex-causes newborns to suck anything that touches their lips
• Rooting reflex-causes babies to turn their mouths towards anything that brushes their cheek (reflexive search for a nipple).
• Swallowing- aids feeding
• Crying-when the stomach is empty
• Spitting up-when too much has been swallowed so quickly.

5 mo.- inch forward on their bellies

8-10 mo.- crawl on all fours (some babies never crawl).

9 mo.- walk while holding someone

10-12 mo.- stand alone momentarily

12-13 mo.- walk well, unassisted

18 mo.- Run

26 mo.- Jump up

Muscle strength, brain maturation within the motor cortex, and practice.

The most lethal disease for children in the past, was eradicated worldwide as of 1971.

Vaccination is no longer needed.

Emergency worked are immunized as a precaution against bioterrorism, not a normal outbreak.

Sudden Infant Death Syndrome

A situation in which a seemingly healthy infant, at least 2 months old, suddenly stops breathing and dies unexpectedly while asleep. 

The cause is unknown, but it is correlated with sleeping on the stomach and having parents who smoke.

• Produces anti-bodies
• More iron, vitamins A and C than cow's milk
• helps prevent almost any illness
• always body temperature
• decreases risk of asthma, obesity and heart disease
• better childhood vision
• higher IQ, less likely to drop out of school, more likely to attend college
• Later puberty, less prone to teenage pregnancy

A disease of chronic malnutrition during childhood, in a which a protein deficient makes the child more vulnerable to other diseases, such as measles, diarrhea and influenza.

"A disease of the older child when a new baby arrives"- signifying cessation of breast-feeding and less maternal attention ( after age 1).

Childs growth is retarded, the liver is damaged, the immune system is weakened, the face, legs, and abdomen swell with fluid (edema), energy level is reduced, and hair becomes thin, brittle and colorless.