Q 01/05

Roughly how many bones does a human have at birth, before some fuse together?

A) About 150

B) About 206

C) About 240

D) About 270

Answer · why

D) About 270

Adults end up with around 206 once the skull plates, sacrum and other pieces have knitted together over the years.

Q 02/05

A newborn's kneecap is made of what?

A) Soft cartilage

B) Fused tendon

C) Hollow bone

D) Dense muscle

Answer · why

A) Soft cartilage

It only starts turning to bone around age three, which is one reason toddlers can crawl on hard floors without complaint.

Q 03/05

What is the everyday name for the fontanelles, the membranous gaps between the bones of a baby's skull?

A) Soft spots

B) Baby seams

C) Dimples

D) Growth lines

Answer · why

A) Soft spots

The largest, diamond-shaped one sits at the top front of the head; they let the skull flex during birth and give the fast-growing brain room.

Q 04/05

The word "infant" comes from a Latin word meaning what?

A) New life

B) Unspeaking

C) Beloved

D) Small one

Answer · why

B) Unspeaking

Neonate has a Latin root too, and in medicine it means specifically the first 28 days after birth.

Q 05/05

In developed countries, what is the approximate average birth weight of a full-term newborn?

A) About 5 lb

B) About 7.5 lb

C) About 9 lb

D) About 11 lb

Answer · why

B) About 7.5 lb

Newborns typically lose 3-7 percent of that in the first week as fluid clears from the lungs, then start gaining.