[Sam shifts a little upon realizing she's just inadvertently opened a new tangent, but just flops back across her bed as she answers.]
It's a key thing in the transport of things an organic body needs---like oxygen---around the body. Fluid, usually red, packed with specialized cells, travels through veins and arteries such as you see.
[From where she's flopped, she holds up a wrist to point at the veins there.]
And when I say key, I mean key. A person can die of blood loss. A person, or, okay, anything with blood.
[video]
[Sam shifts a little upon realizing she's just inadvertently opened a new tangent, but just flops back across her bed as she answers.]
It's a key thing in the transport of things an organic body needs---like oxygen---around the body. Fluid, usually red, packed with specialized cells, travels through veins and arteries such as you see.
[From where she's flopped, she holds up a wrist to point at the veins there.]
And when I say key, I mean key. A person can die of blood loss. A person, or, okay, anything with blood.