Newborns have approximately 70
reflexes, some of which disappear between three to six months. Others are
replaced with more intentional behavior as the babies grow.
For around three weeks, newborns don’t
shed tears when they cry because their tear ducts are not completely developed.
Babies are born without kneecaps.
Instead they have a structure of cartilage which develops only after six months.
They are born with around 10,000 taste
buds, which is much more than adults (2,000-4,000). Apart from the tongue, baby
taste buds are also found on the back, roof and sides of the mouth.
Infants have 300 bones which slowly
fuse together as the babies grow to form the 206 bones every adult human has.
Approximately 80 percent of babies are
born with birthmarks, which are of two categories – vascular and pigmented. The
former occurs due to tiny blood vessels under the surface of the skin and
latter is caused from an abnormal development of pigment cells. Some common birthmarks
are port wine stains and stork bites. They can either be permanent or fade away
with time.
Till around seven months, babies can
swallow and breathe at the same time. Also, they can take more breaths than
adults – a baby’s breathing rate is 40 times per minute, while an adult’s is
between 15 and 20.
When their mothers are around four
months pregnant, babies develop a mustache of fine hair that spreads to the
entire body. This hair, which is called lanugo, falls out before birth and is
consumed by the baby. The digested hair is excreted in their first poop.
Newborns cannot taste salt until they
are four months old. Babies start to smile only four to six weeks after
birth.
Newborns are nearsighted; they can
only see objects and people about eight to 12 inches away.
Before their vision
develops fully, which takes around four months, they see mostly in black and
white and shades of gray. However, they can spot bright colors and big
geometric patterns.
A newborn does not have a
proportionate body – their head makes up a quarter of the body. The brain
constitutes 10 percent of the total body weight. As they grow, rest of the body
catches up.
A baby’s resting heartbeat is 130 to
160 times per minute, which is much faster than an adult (70-100).
Babies double their birth weight in
just five months. They grow half to one inch (about 1.5 to 2.5 centimeters)
every month and gain five to seven ounces (about 140 to 200 grams) every week.
Babies are born with a natural reflex
to swim which lasts only for the first six months of their life.
No comments:
Post a Comment