Author Question: The primary function of platelets is to: a. Defend the body against bacterial invasion. b. ... (Read 65 times)

stephzh

  • Hero Member
  • *****
  • Posts: 556
The primary function of platelets is to:
 
  a. Defend the body against bacterial invasion.
  b. Carry oxygen to tissues.
  c. Facilitate blood clotting.
  d. Regulate acid-base balance.

Question 2

Which laboratory specimens must be treated with standard (universal) precautions?
 
  a. Only those labeled with a biohazard sticker
  b. Only those from patients known to have human immunodeficiency virus (HIV) or hepatitis
  c. All human blood and body fluids
  d. All specimens submitted for bacterial culture



jazzlynnnnn

  • Sr. Member
  • ****
  • Posts: 335
Answer to Question 1

ANS: C
Whenever disruption occurs to a blood vessel so that bleeding results, platelets respond initially to stop the bleeding in small vessels; they also play an integral role in facilitating the formation of a blood clot. White cells defend against bacterial invasion; red cells (i.e., hemoglobin) carry oxygen to tissues; and a complex interaction of plasma electrolytes, proteins, and carbon dioxide participates in acid-base balance.

Answer to Question 2

ANS: C
All human specimens, whether they are blood, urine, any body fluid, or a specimen submitted for culture, should be treated identically using universal standard precautions. Even a patient who professes to feel well can harbor an infectious agent that has the potential for transmission.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

For a complete list of videos, visit our video library