Human Anatomy and Physiology

The thyroid gland releases hormones that affect the metabolism of the body and calcium deposition in bones.
Controls the bodys metabolism
Your thyroid is a butterfly-shaped gland in the lower, front part of your neck. It controls your metabolism and keeps your whole body functioning properly.

Some times both ovaries produce individual egg. Then both ovum gets fertilized and Fraternal twins happens

One egg from each ovary is fertilized

Nutrients are absorbed into the bloodstream. Starch is broken down by enzymes.

Macromolecules are broken down.

if a woman is breastfeeding her child, it is healthier for her child if her bc contains progesterone, rather than estrogene.

progesterone controls the release of eggs

The endocrine system produces hormones.

The endocrine system sends messages using hormones. It delivers messages from the nervous system to the excretory system. It tells the excretory system when the blood is out of balance.

One gland causes calcium ions to be released; another gland causes them to be absorbed

Depends on when you consider it a child. First it's a Zygote, a fertilized egg, and then a blastocyst. Medically it's not a child until it's born. But if we start with embryo you can read all about it in the link below. Someone wrote blood starts pumping and arms starts to develop but that is weeks later.

Blood pumps through the body.

or

Rhythmic breathing movements

the organs grow larger

Collection of data APEX

fraternal twins have two different chromosomes

A sperm or egg

eyes develop

lips start to form

Vocal cords develop.

A chemical substance used to treat disease

It grows larger (cheaters)

In vitro (in glass)

The circulatory and respiratory systems must work on their own.