Which structure is a double-layered membrane that secretes a ...

[123654777]

Which structure is a double-layered membrane that secretes a slippery, watery fluid around the heart?
 
  A) pericardium
  B) mediastinum
  C) endocardium
  D) myocardium

Question 2

Which procedure uses x-rays to create multiple images as slices through the kidney?
 
  A) nephrotomography
  B) renal angiography
  C) 24-hour creatinine clearance
  D) cystometry

[brittanywood]

Answer to Question 1

A
Explanation: A) Correct The pericardium is a double-layered membrane around the heart.
B) The mediastinum is a central area in the thoracic cavity that holds the heart.
C) The endocardium is the inner lining of the heart.
D) The myocardium is the muscular layer of the heart.

Answer to Question 2

A
Explanation: A) Correct The combining form tom/o- means cut; layer; slice.
B) Renal angiography does not create multiple images as slices.
C) This is a urine collection, not an x-ray.
D) Cystometry does not use x-rays.