Author Question: When hematopoiesis occurs in the liver in an adult, it is called: a. Intramedullary b. ... (Read 60 times)

renzo156

  • Hero Member
  • *****
  • Posts: 526
When hematopoiesis occurs in the liver in an adult, it is called:
 
  a. Intramedullary
  b. Intermedullary
  c. Normal
  d. Extramedullary

Question 2

How do cells get from the bone marrow into peripheral circulation?
 
  a. Stem cells escape the bone marrow and mature in peripheral circulation.
  b. Mature cells attach to a carrier protein for transport.
  c. Capillaries flow into the marrow and pluck out precursor cells.
  d. Mature cells squeeze through spaces in the vessel endothelial lining.



Benayers

  • Sr. Member
  • ****
  • Posts: 328
Answer to Question 1

ANS: D
Whenever hematopoiesis occurs outside the bone marrow in an adult, other than lymphopoiesis in lymphatic tissue, it is called extramedullary. This is abnormal.

Answer to Question 2

ANS: D
As mature blood cells come into contact with endothelial cells in the bone marrow, they bind to the surface via a receptor-mediated process. The binding creates a space between the luminal adventitial and endothelial cells. This allows the bone marrow cells to escape into circulation.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

For a complete list of videos, visit our video library