I answered several question for an assignment and I need help to understand how I got it wrong. The assignment dwelt medical terms. The following three were marked wrong. Please help!

Question

Use the word bank below to build the medical word that corresponds to each definition in problems.

12.Resembling three points - Answer "Tricuspid"

13.Pertaining to the heart and lung cavity - Answer "Cardiopulmonary"

Break the medical word into its word parts. Using the word parts, create a definition of the word. Write a sentence using the word in a medical context.
Myocardial-XX
My/o- Cardi/o- -al

Define: Pertaining to the muscle that makes up the bulk of the heart.
Sentence: A myocardial infarction is when the flow of oxygenated blood is blocked by a blood clot.

Answer 1

Sup