Solve these clues to fill the grid.
- Red liquid pumped around the body by the heart
- 3 Across
- A mechanical device in a camera that controls size of aperture of the lens
- 4 Across
- A hemoprotein composed of globin and heme that gives red blood cells their characteristic color
- 7 Across
- Any of the minute blood vessels connecting arterioles with venules (plural)
- 9 Across
- One of the tubules forming the respiratory system of most insects and many arachnids
- 11 Across
- The metabolic processes whereby certain organisms obtain energy from organic molecules
- 13 Across
- A blood vessel that carries blood from the heart to the body (plural)
- 15 Across
- A fourth state of matter distinct from solid or liquid or gas and present in stars and fusion
- 16 Across
- A thin coagulable fluid containing white blood cells and chyle
- 1 Down
- Present at birth but not necessarily hereditary
- 2 Down
- Malignant neoplasm of blood-forming tissues
- 5 Down
- Tiny bits of protoplasm found in vertebrate blood (plural)
- 6 Down
- A cartilaginous structure at the top of the trachea
- 8 Down
- An agranulocytic leukocyte that normally makes up a quarter of the white blood cell count but (plural)
- 10 Down
- Respiratory disorder characterized by wheezing
- 12 Down
- A deficiency of red blood cells
- 14 Down
