Pre operative operative and post operative care.
Answer:
a strand of conducting vessels in the stem or leaves of a plant, typically with pholem on the outside and xylem on the inside.
The correct answer is neurons.
The neurons are specialized cells which are responsible for transmitting messages throughout the body. Neurons are the basic units of the nervous system and its most important part is the brain. It receives incoming information and send a signal to other neurons, muscles, or glands accordingly.
Litmus paper because it gives space and is very smooth
