The middle layer is the lamina propria and it contains blood and lymph vessels.

粘膜层的中层为固有层，内含血管和淋巴管。

Now, surrounded by the muscularis externa is the submucosa, which consists of a dense layer of tissue that contains blood vessels, lymphatics, and nerves.

在肌层包裹下的是粘膜下层；它由一层致密组织构成，其中含有血管、淋巴和神经。

Since this ligament suspends the ovary and contains the ovarian blood vessels within it, torsion can cut off the blood supply to the ovary.

由于该韧带悬吊着卵巢，并且内含卵巢血管，扭转可能会使卵巢血供中断。

The thinking is that, among some lobe-finned fish, the swim bladder became bigger and contained more blood vessels, so it became better at putting oxygen into the bloodstream.

他们的想法是， 在一些叶鳍鱼中，鱼鳔变得更大并且包含更多的血管，因此它更善于将氧气输送到血液中。