1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dmitrij [34]
2 years ago
10

Why the red blood cell In the embryo produced mainly in the liver, instead of the bone marrow ...?​

Health
1 answer:
Katyanochek1 [597]2 years ago
6 0
In the human embryo, the first site of blood formation is the yolk sac. Later in embryonic life, the liver becomes the most important red blood cell-forming organ, but it is soon succeeded by the bone marrow, which in adult life is the only source of both red blood cells and the granulocytes. Their job is to transport oxygen to the body's tissues in exchange for carbon dioxide, which is carried to and eliminated by the lungs. Red blood cells are formed in the red bone marrow of bones. Stem cells in the red bone marrow called hemocytoblasts give rise to all of the formed elements in blood. Erythroid (red blood) cells are the first cell type to be specified in the postimplantation mammalian embryo and serve highly specialized, essential functions throughout gestation and postnatal life. The existence of 2 developmentally and morphologically distinct erythroid lineages, primitive (embryonic) and definitive (adult), was described for the mammalian embryo more than a century ago. Cells of the primitive erythroid lineage support the transition from rapidly growing embryo to fetus, whereas definitive erythrocytes function during the transition from fetal life to birth and continue to be crucial for a variety of normal physiologic processes. Over the past few years, it has become apparent that the ontogeny and maturation of these lineages are more complex than previously appreciated. In this review, we highlight some common and distinguishing features of the red blood cell lineages and summarize advances in our understanding of how these cells develop and differentiate throughout mammalian ontogeny.
You might be interested in
What area of study make up the fiel of psychology
andriy [413]

Answer:

These are the four major areas: clinical psychology, cognitive psychology,behavioral psychology,biopsychology

Explanation:

4 0
2 years ago
When obtaining the vital signs of a client with multiple traumatic injuries, a nurse detects bradycardia, bradypnea, and systoli
ira [324]
Shock. Hypovolemic shock due to bleeding.
3 0
2 years ago
Sate 4 ways in which work could give you a sense of purpose in life​
Bogdan [553]
1. For some it is challenging, which they like and gives them a purpose.
2. Co-workers.
3. They make money and can support themselves and buy things that they need and want.
4. If you are a teacher or any kind of helper, it feels good to help people.

(Please give brainliest if this helped!)
8 0
3 years ago
SOMEONE HELPPPP ILL BRAINLIST ITS IMPORTANT!!
kaheart [24]

Answer:

1. D

2. A

3. A

4. C

5. B

Explanation:

7 0
2 years ago
Read 2 more answers
Where would you NOT find smooth muscle? heart stomach blood vessels respiratory airways
blondinia [14]
The answer  would be
blood vessels

8 0
2 years ago
Read 2 more answers
Other questions:
  • Brent's doctor wants him achieve a healthy body composition. Which of the following exercises would be best for Brent?
    6·2 answers
  • What is the reason meal plans should be personalized
    7·2 answers
  • As a health care professional, why is it important to address the whole person, including their physical and social need?
    13·1 answer
  • A parent wants to take his son to a location in the neighborhood where he can engage in balance and strength activities. which l
    11·1 answer
  • Which struture could be found in a single celled organism
    14·2 answers
  • Which central nervous system manifestation observed in a client with a respiratory disorder indicates inadequate oxygenation?
    13·1 answer
  • An autosomal gene is a gene ____.
    12·1 answer
  • how can you encourage your friends to eat healthy food. Write a short note.- I don't know how to answer this question so please
    10·2 answers
  • What are some behaviors a child may exhibit when abused?
    8·2 answers
  • According to dr. hans selye, the third stage of the body's response to stress is known as the ________ stage.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!