atretic body

例句：

1. 1. Scar tissue forms quickly after a cut or injury.
   创伤或损伤后，瘢痕组织会迅速形成。
2. 2. The atretic body is often found in the heart, where it helps to support the heart muscle.
   结缔组织通常存在于心脏中，它有助于支撑心脏肌肉。
3. 3. Scar tissue can be painful and may require medical treatment.
   瘢痕组织可能会很痛，可能需要医疗治疗。