Weight capacity is the determining factor when choosing what gauge steel shelving to. use for your records storage. If lighter-gauge steel shelving provides the necessary. weight capacity for your records, you may choose to purchase it.
The amount of blood in the penis increases sixfold during an erection. The blood filling the corpora cavernosa compresses and then closes off the openings to the veins that normally drain blood away from the penis (see Figure 4). In essence, the blood becomes trapped, maintaining the erection.
Once the blood fills the penis and an erection is achieved, the blood vessels to the penis close off so that the erection is maintained. Following sexual arousal, the veins to the penis again open up, allowing the blood to leave.