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The ________________ is an ideal barrier to both bacteria and viruses. It is made of stratified squamous epithelium and, if you recall, the outer most layer of cells is dead and full of keratin.

Contraction of the smooth muscle in the blood vessels resulting in a decrease in the diameter of the lumen is known as ______________.

Which of the following is found in plasma but not usually in glomerular filtrate?

The ________________ is an ideal barrier to both bacteria and viruses. It is made of stratified squamous epithelium and, if you recall, the outer most layer of cells is dead and full of keratin.

Which of the following statements comparing arteries to veins is NOT true?

The exchange of gases between the blood in the capillary and the tissue cells in your feet is called:

A study published in the Lancet in 1998 proclaimed a direct link between autism and the MMR vaccine. This study was ___.

The exchange of gases between the blood in the capillary and the tissue cells in your feet is called:

Determine if the underlined portions of the statement are true or false. During expiration the diaphragm relaxes leading to a volume decrease and pressure increase in the thoracic cavity.

The ________________ is literally an oval hole in the interatrial septum and allows a mixing of systemic and pulmonary circulation in the fetus.