By Richard Nordquist. Like adjectives and adverbs, prepositional phrases add meaning to the nouns and verbs in our sentences. There are two prepositional phrases in the following sentence: The first prepositional phrase-- in the kitchen -- modifies the noun air; the second-- of stale food --modifies the verb reeked.
Reality: An epidural involves injecting pain-blocking medication into a space between the vertebrae and the spinal fluid; it usually takes about 15 minutes to work and lasts as long as needed. A spinal is an injection directly into the spinal fluid; it is given as part of the CSE technique and takes effect in five minutes.
Norepinephrine is also made in the adrenal medulla where it synthesized from dopamine and is released into the blood as a hormone. Epinephrine is made from norepinephrine inside the adrenal medulla (the inner part of the adrenal gland, a small gland associated with the kidneys). Our adrenal medulla helps us to cope with physical and emotional stress. The synthesis of epinephrine increases during times of stress.