What is the part of the syringe that holds the medicine?

The correct answer is the barrel of the syringe. The barrel is the cylindrical part that holds the medication and has measurements marked on it to indicate the volume of the fluid inside. This allows a veterinary professional to accurately draw up and administer the correct dosage of medication.

The plunger is the component that fits inside the barrel and is pushed or pulled to draw in or expel the medication. While it plays a crucial role in the operation of the syringe, it does not hold the medicine itself. The needle is attached to the end of the barrel and is used to deliver the medication into the patient; it does not store the medication. Lastly, the cap, if present, is used to cover the needle when not in use but is not involved in holding the medicine within the syringe. Understanding these components is essential for the safe and effective use of syringes in veterinary medicine.