Yes you have to stick a needle through it. To get it passed the epidermis.
Ultraviolet (UV) radiation can pass through skin, but it is absorbed by bone and does not pass through it. UV radiation is responsible for tanning and sunburn when it penetrates the skin.
Skin is actually translucent, not opaque. So yes, a thin enough membrane of skin can pass light. The human hand is thin enough, if the flashlight is bright enough.
No, air cannot pass through human skin, as the skin acts as a protective barrier to prevent substances from entering the body. The respiratory system is responsible for exchanging gases with the environment.
Alpha radiation, it's force is too weak to even penetrate the outer layer of dead skin. Beta and Gamma radiation can pass through, Beta has trouble passing through clothes whereas Gamma is able to go straight through the body.
Yes, photons of light can pass through our bodies. Photons interact with atoms in our body, but most of the time they pass through without being absorbed or scattered, allowing them to travel through us. This is why we can see light and feel warm sunlight on our skin.
Ultraviolet (UV) radiation can pass through skin, but it is absorbed by bone and does not pass through it. UV radiation is responsible for tanning and sunburn when it penetrates the skin.
x-rays
Stop taking heroin.
Water can pass through the skin; they have lungs
How about you don't do heroin crack baby
Skin is actually translucent, not opaque. So yes, a thin enough membrane of skin can pass light. The human hand is thin enough, if the flashlight is bright enough.
The length of time it takes a pesticide to pass through a material to reach the skin is called the "penetration time."
Yes, the skin helps transport materials through the body through processes like diffusion and absorption. Substances like oxygen, water, and some medications can pass through the skin and enter the bloodstream. However, the skin is selective in what it allows to pass through.
As it is broken down by the body its by products can leave through the skin, since it is part of the excretory system. But, as the original chemical compound, no. It is much too large a molecule to nake its way through all the structures of the skin that are designed to keep such things in.
Water can pass through the skin; they have lungs
Missing the vein. but still injecting
becasue its retared and disgusting to have