Answer
The answer for #17 is sinusoids.
Work Step by Step
Sinusoids are irregular vessels that transport blood. They are found in many organs including liver, spleen, and kidneys. Like capillaries, sinusoids have walls that consist of a single layer of endotheliumm. Some sinusoids are leaky, that is, they have pores . Such sinusoids or sinusoidal capillaries are described as fenestrated.
