![Mammal. Arteriole and venule. Transverse section. 500X - Mammals - Mammals - Circulatory system - Other systems - Comparative anatomy of Vertebrates - Animal histology - Photos Mammal. Arteriole and venule. Transverse section. 500X - Mammals - Mammals - Circulatory system - Other systems - Comparative anatomy of Vertebrates - Animal histology - Photos](https://www.nature-microscope-photo-video.com/pub/media/catalog/product/cache/0bbf10ac3a760b9ee8ab2ee5272ed73d/0/1/010505c02060502previewen-02x.jpg)
Mammal. Arteriole and venule. Transverse section. 500X - Mammals - Mammals - Circulatory system - Other systems - Comparative anatomy of Vertebrates - Animal histology - Photos
![Light microscope micrograph showing the tunica albuginea of a human testicle. Below the external fibrous layer is the tunica vasculosa and the seminif Stock Photo - Alamy Light microscope micrograph showing the tunica albuginea of a human testicle. Below the external fibrous layer is the tunica vasculosa and the seminif Stock Photo - Alamy](https://l450v.alamy.com/450v/2e0prcn/human-arteriole-showing-from-inside-to-outside-endothelium-smooth-mucle-fibers-and-tunica-x75-at-10-cm-wide-2e0prcn.jpg)
Light microscope micrograph showing the tunica albuginea of a human testicle. Below the external fibrous layer is the tunica vasculosa and the seminif Stock Photo - Alamy
![Histology Headquarters on X: "Venules are part of the microvasculature, the first branches after the capillary bed. These vessels have extremely thin walls! Almost no tunica media is present. Note the contrasting Histology Headquarters on X: "Venules are part of the microvasculature, the first branches after the capillary bed. These vessels have extremely thin walls! Almost no tunica media is present. Note the contrasting](https://pbs.twimg.com/media/FLkozFZXMBA2Cun.jpg:large)
Histology Headquarters on X: "Venules are part of the microvasculature, the first branches after the capillary bed. These vessels have extremely thin walls! Almost no tunica media is present. Note the contrasting
![Man. Salivary gland. Parotid. Transverse section. 250X - Salivary gland - Man - Mammals - Digestive system - Other systems - Comparative anatomy of Vertebrates - Animal histology - Photos Man. Salivary gland. Parotid. Transverse section. 250X - Salivary gland - Man - Mammals - Digestive system - Other systems - Comparative anatomy of Vertebrates - Animal histology - Photos](https://www.nature-microscope-photo-video.com/pub/media/catalog/product/cache/0bbf10ac3a760b9ee8ab2ee5272ed73d/0/1/010505c0202050802previewen-02z06.jpg)