Urethra. Coloured light micrograph of a section through a penis, showing the urethra. The urethra is the tube that carries urine from the bladder out of the body. The central lumen (white) carries the urine. It is covered in s psuedostratified columnar epithelium (purple). Surrounding this is a supporting layer of connective tissue, the lamina propria (pink), which is rich in elastin fibres. There are also layers of muscle tissue (not seen here), which contract to expel the urine. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gschmeissner, Steve |
Bildgröße: | 4829 px × 3619 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |