Author Question: Platelet agonists are substances that: a. Bind to phospholipid in the platelet membrane b. ... (Read 79 times)

olgavictoria

  • Hero Member
  • *****
  • Posts: 528
Platelet agonists are substances that:
 
  a. Bind to phospholipid in the platelet membrane
  b. Promote apoptosis
  c. Activate platelets
  d. Enhance megakaryocyte proliferation

Question 2

What system is responsible for controlling platelet activation?
 
  a. Eicosanoid (prostaglandin) pathway
  b. Surface connect canalicular system
  c. Membrane glycoproteins
  d. Dense tubular system



Silverbeard98

  • Sr. Member
  • ****
  • Posts: 355
Answer to Question 1

ANS: C
Platelet agonists include thromboxane A2 (TXA2), ADP, and thrombin. Each of them binds to its transmembrane receptor, and platelet activation is the result.

Answer to Question 2

ANS: D
The dense tubular system is a condensed remnant of the rough endoplasmic reticulum. It sequesters Ca++ and bears a series of enzymes that support platelet activation. It is the control center for platelet activation.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

For a complete list of videos, visit our video library