that is an erection, it will occur randomly throughout puberty and probably throughout your life and it will almost always occur when you get sexually excited.
This term you are referring to is called an erection. This is when blood flows to the penis and becomes firm to the touch.
The veins.
alot
blood
it completely fills its container, takes the shape of its container
All blood is the same. *within an individual body.
This is not a question please rephrase.
Blood vessels being ruptured. the blood fills the tissue and it swells.
Dark Red
About 3 years, it fills with blood and needs to be renewed
Yes, but it is not the same as mammal blood. Insects have a clear to yellowish fluid, called haemolymph, which fills their body cavities and this is the equivalent to our blood.
Blood fills it up when u see a hot girl
You see, the sarcomere fills with endoplasmic filter that permits blood flow throughout the body