Solve these clues to fill the grid.
- The snail-shaped tube where sound vibrations are converted into nerve impulses by the organ of Corti
- 3 Across
- Any animal that feeds chiefly on grass and other plants
- 4 Across
- An essential structural component of living cells and source of energy for animals
- 6 Across
- A sheet or band of tough fibrous tissue connecting bones or cartilages or supporting muscles
- 9 Across
- The period during which an embryo develops
- 12 Across
- The vascular structure in the uterus of most mammals providing oxygen and nutrients for
- 13 Across
- A blood vessel that carries blood from the heart to the body
- 14 Across
- An animal organism in the early stages of growth and differentiation that in higher forms merge
- 1 Down
- Any of several complex proteins that are produced by cells and act as catalysts in specific
- 2 Down
- A major division of the vertebrate brain
- 3 Down
- Any of the minute blood vessels connecting arterioles with venules
- 5 Down
- Tough elastic tissue
- 6 Down
- The deep vascular inner layer of the skin
- 7 Down
- An unborn or unhatched vertebrate in the later stages of development showing the main recognizable
- 8 Down
- Any warm-blooded vertebrate having the skin more or less covered with hair
- 10 Down
- Insoluble pigments that account for the color of e.g. skin and scales and feathers
- 11 Down
