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The fetus has _______ and __________ .

Which of the following transport urine from the kidneys to the urinary bladder?

Blood pressure is ________.

What is the first line of defense against pathogens?

Many nephrons empty into a ________.

Many nephrons empty into a ________.

Urination and tears are examples of the _____ line of defense.

Determine if the underlined portions of the statement are true or false. Vaccines are effective at preventing future infections by a specific pathogen because they stimulate innate immune defenses making it difficult for the pathogen to re-enter the body.

Vasodilation of the blood vessels in the skin will result in a lower body temperature.

Which type of blood vessel contains walls that are composed of a single layer of endothelial cells and a basement membrane?