Solve these clues to fill the grid.
- Digitalis preparation used to treat congestive heart failure or cardiac arrhythmia
- 3 Across
- The large trunk artery that carries blood from the left ventricle of the heart to branch arteries
- 4 Across
- A specialized bit of heart tissue that controls the heartbeat
- 8 Across
- Roentgenographic examination of blood vessels after injection of a radiopaque contrast medium
- 9 Across
- The membrane that lines the cavities of the heart and forms part of the heart valves
- 10 Across
- The contraction of the chambers of the heart to drive blood into the aorta and pulmonary artery
- 11 Across
- A heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol
- 13 Across
- Any of the minute blood vessels connecting arterioles with venules
- 1 Down
- Any of various drugs used in treating hypertension or arrhythmia
- 2 Down
- Venous swelling external or internal to the anal sphincter (plural)
- 5 Down
- The shape of a wave illustrated graphically by plotting the values of the period quantity against
- 6 Down
- A minute vein continuous with a capillary
- 7 Down
- A blood vessel that carries blood from the capillaries toward the heart
- 12 Down