Answer:
connective nerve
Explanation:
nervous tissue sends messages from brain to the rest of the body
Okay, so there are four ”Valve’s” in the heart
The; Aortic valve, the Pulmonary valve, Tricuspid valve, and the Mitral valve.
Hopes this answers your question.
Just look at the options it gives you and press the one that is not one of these options.
Answer:
Time.
Explanation:
The amount of duration would be time.
The correct option is B. separated by the mediastinum :)