Solve these clues to fill the grid.
- The opening through which food is taken in and vocalizations emerge
- 4 Across
- Either of two saclike respiratory organs in the chest of vertebrates (plural)
- 5 Across
- Tiniest unit of living things (plural)
- 8 Across
- A muscular sac attached to the liver that stores bile until it is needed for digestion
- 10 Across
- Hard structures in the mouth used for biting and chewing.
- 12 Across
- A cord or band of inelastic tissue connecting a muscle with its bony attachment
- 13 Across
- The entire physical structure of an organism
- 15 Across
- Organ that pumps blood around the body
- 16 Across
- Rigid connective tissue that makes up the skeleton of vertebrates (plural)
- 1 Down
- The region of the body of a vertebrate between the thorax and the pelvis
- 2 Down
- A large elongated exocrine gland located behind the stomach
- 3 Down
- Either of two bean-shaped excretory organs that filter wastes from the blood and excrete them
- 6 Down
- Red liquid pumped around the body by the heart
- 7 Down
- Large and complicated reddish-brown glandular organ located in the upper right portion of
- 9 Down
- Supplementary material that is collected and ___ at the back of a book
- 11 Down
- The organ of smell and entrance to the respiratory tract
- 14 Down