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Directly into the Blood Stream. Endocrine Glands release there secretions (hormones) directly into the blood stream. That is why they are unlike Exocrine Glands.
They are ductless so they secrete chemicals directly into the blood stream.
Caffeine and alcohol enter directly from the stomach.
To remove Carbon Dioxide which is dissolved in our blood stream. Dissolved Carbon Dioxide forms Carbonic Acid which is toxic to us.
No because endocrine glands are ductless. This means it travels directly from gland to blood stream.
Intravenous injection.
It is the introduction of water directly into the blood stream using an IV.
Nitrogen dissolved in the blood stream while diving is returning to a gaseous state.
Haemoglobin in your red blood cells carries the oxygen through your blood stream to different parts of your body. The carbon bi oxide comes dissolved in red blood cells as well as in plasma.
yes because most likely they have already dissolved and are in your blood stream
The walls of the small intestines, the portal vein, and the liver.
No, it is not unless you have a cut on your hand and you are directly putting the ink into your blood stream.