2. The storage place of genetic information is the nucleus.

3. The main site of lipid synthesis is smooth endoplasmic reticulum.

4. The main difference between rough endoplasmic reticulum and smooth endoplasmic reticulum under electron microscope is whether ribosomes are attached to their surfaces.

5. The midsagittal plane divides the carcass into two equal halves.

6. When the bone is damaged, the periosteum should be preserved as much as possible during the operation.

7. The largest bone in the skull is the mandible.

8. The animal with horns is a cow.

9. The animal with a snout is a pig.

10, there are generally 7 cervical vertebrae in animals.

1 1 and 18 animals in the thoracic spine are horses.

12, the vertebral arch and vertebral body of thoracic vertebra enclose vertebral foramen.

13. The bones that make up the thorax include the thoracic vertebrae, ribs and sternum.

14. The hip bones of domestic animals include ilium, ischium and pubis.

15. The bones that make up the pelvic cavity are the hip, the sacrum and the first three or four coccygeal vertebrae.

16. The bones that make up the shoulder joint of mammals are the scapula and humerus.