Chapter 20 part 2

The atriuretic peptides (ANP and BNP) react to increased stretch of heart muscles by:

• Decreasing blood volume and stimulating aldosterone

• Decreasing blood volume and inhibiting aldosterone

• Increasing blood volume and stimulating aldosterone

• Increasing blood volume and inhibiting aldosterone

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Capillaries have a small cross sectional area

• True

• False

Lipid soluble substances

• require water-filled pores to move through endothelial cells

• pass directly through endothelial cells

• help to maintain osmotic pressure

• help to maintain hydrostatic pressure

Diffusion moves substances from

• low concentration to high concentration

• high concentration to low concentration

Fluid being reabsorbed into capillaries is mostly due to

• capillary hydrostatic pressure

• capillary osmotic pressure

• interstitial fluid hydrostatic pressure

• interstitial fluid osmotic pressure

Hypertention would increase

• CHP

• COP

• IFHP

• IFOP

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Liver failure would decrease

• CHP

• COP

• IFHP

• IFOP

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Compounds such as histamine and nitric oxide mostly cause

• vasoconstriction

• vasodilation

• increased cardiac output

• decreased cardiac output

Chemoreceptors primarily respond to all of the following except

• low O2

• high CO2

• low pH

• high pH

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NGSS.HS-LS1-3

Renin is released in response to

• increased blood volume

• decreased blood volume

• increased Na+

• increased blood pressure

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NGSS.HS-LS1-3