CFA - Blood functions and components

Which of the following functions is not primarily associated with blood?

• Transport of hormones from endocrine glands to target organs.
• Regulation of pH balance by buffering acidic and alkaline substances.
• Production of digestive enzymes for breaking down food in the stomach.
• Removal of metabolic waste products such as carbon dioxide and urea.

Plasma accounts for _____% of all blood, and water accounts for ____% of plasma.

• 55;90
• 90;55
• 45;55
• 55;45

The most numerous formed element in blood are the ___________________, and their function is____________________.

• Platelets; to prevent bleeding from open wounds.
• White blood cells; to carry oxygen
• White blood cells; to fight infection.
• Erythrocytes; to carry oxygen and carbon dioxide.

What would most likely happen if a person had a low white blood cell count?

• They would have trouble absorbing oxygen
• They would be more prone to infections
• They would bleed more from small cuts
• They would have higher blood pressure

Why would a decrease in red blood cells most likely affect body function?

• It would reduce the ability to fight off infections
• It would increase the risk of uncontrolled bleeding
• It would raise the temperature of the circulatory system
• It would lower the amount of oxygen delivered to cells

What does the difference in blood color—dark red versus bright red—most likely indicate?

• The temperature of the blood at different times
• The number of platelets present in the blood
• The amount of oxygen carried by the blood
• The blood’s ability to fight off infections

Blood is slightly basic with a pH of?

• 7.25 - 7.35
• 7.35 - 7.45
• 7.45 - 7.55
• 7.55-8.05

The _________________ is the percentage of total blood volume composed of RBCs.

• Erythrocytes
• Leukocytes
• Buffy Coat
• Hematocrit