Human Anatomy and Physiology Basics: Multiple Choice

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01What is the name of the thin muscle below the lungs that is the main muscle of respiration?
02What are the microscopic filtering units within the kidneys that are responsible for forming urine?
03The cochlea, a spiral-shaped cavity responsible for hearing, is located in which part of the body?
04Which organ produces bile, a substance essential for the digestion of fats?
05Which chamber of the heart pumps oxygenated blood to the rest of the body?
06Often called the 'master gland,' which endocrine gland controls the functions of many other glands in the body?
07Known as the 'powerhouse of the cell,' which organelle generates most of the cell's supply of adenosine triphosphate (ATP)?
08In the respiratory system, where does the primary exchange of gases (oxygen and carbon dioxide) take place?
09By both surface area and weight, what is considered the largest organ of the human body?
10Which component of blood is primarily responsible for clotting?
11What is the basic structural and functional unit of the nervous system?
12What is the longest and strongest bone in the human body?