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☆☆☆☆☆the role of the liver is that it clears toxins from the body
Is produces bile.
carries oxygen rich blood from the lungs to the heart
The endocrine system affects cells with certain receptors .
The nervous system can affect only nearby cells
Red blood cells coagulate wounds; white blood cells defend against bacteria.
carry oxygen.
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
In Vivo
The reliability of a scientific presentation
A group of organs
Red and white blood cells are formed in the bone marrow, so disorders of the marrow can cause blood disorders.
eyes develop
lips start to form
Vocal cords develop.
it makes the body create memory cells for future infections
Apex is Mergus serrator and Mergus merganser.
