The First Step in the Formation of Urine by the Kidneys

question 190

Multiple Choice

The first step in the formation of urine by the kidneys is the process of:

• A)filtration
• B)osmosis
• C)facilitated diffusion
• D)diffusion

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Definitions:

Teratogens

Agents or factors that can cause congenital abnormalities or birth defects in an embryo or fetus when exposed during pregnancy.

Blastocyst

A stage in early embryonic development that occurs approximately 5 to 6 days after fertilization, consisting of a sphere of cells surrounding a fluid-filled cavity.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing fetus via the umbilical cord.

Mesoderm

Mesoderm is the middle layer of an embryo in early development, giving rise to muscles, bones, the cardiovascular system, and other internal organs.