Why do nurses put the syringe inside veins and not arteries?

hi, veins are more superficial and easily accessible,arteries  are so deep which can only be used for special procedures . Arteries have pulsations so it is more risky for bleeding and embolization.

 syringe in the arteries  just for blood extraction to show the ABGs Just . when you put any medication in the vain that mean the medication will go to the heart Then from heart to the all body , but if the medication injected in artery the all medication will go directly to the end of this artery so far the medication cant affect all body , and as the sister  Kathleen Abrenica  said also