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Erythropoietin is what type of a signaling molecule? What stimulus causes activa

ID: 50830 • Letter: E

Question

Erythropoietin is what type of a signaling molecule?

What stimulus causes activation of this feedback loop?

What effect does erythropoietin have in its target tissue?

What is the targe tissue upon which erythopoietin acts?

Cells of which organ or tissue serve as the sensors for this feedback loop?

What parameter is being monitored by the sensors of this feedback loop?

Cells of which organ or tissue serve as the effectors for this feedback loop?

Oxygen tension in the blood

Red blood cell production in the bone marrow

Hormone production in the kidney

Kidney

Bone Marrow

Blood

Osteoblasts (bone forming cells)

Increases Red Blood Cell (RBC) production

Kidney Cells

Hormone

Neurotransmitter

Cytokine

Bone Marrow

Decreases Red Blood Cell (RBC) production

Increased oxygen tension in the blood

Decreased oxygen tension in the blood

Osteoclasts (bone resorbing cells)

Erythropoietin is what type of a signaling molecule?

What stimulus causes activation of this feedback loop?

What effect does erythropoietin have in its target tissue?

What is the targe tissue upon which erythopoietin acts?

Cells of which organ or tissue serve as the sensors for this feedback loop?

What parameter is being monitored by the sensors of this feedback loop?

Cells of which organ or tissue serve as the effectors for this feedback loop?

1.

Oxygen tension in the blood

2.

Red blood cell production in the bone marrow

3.

Hormone production in the kidney

4.

Kidney

5.

Bone Marrow

6.

Blood

7.

Osteoblasts (bone forming cells)

8.

Increases Red Blood Cell (RBC) production

9.

Kidney Cells

10.

Hormone

11.

Neurotransmitter

12.

Cytokine

13.

Bone Marrow

14.

Decreases Red Blood Cell (RBC) production

15.

Increased oxygen tension in the blood

16.

Decreased oxygen tension in the blood

17.

Osteoclasts (bone resorbing cells)

Explanation / Answer

Erythropoietin is a cytokine i.e. a protein signalling molecule.

Low oxygen levels act as stimulus for activating the feedback loop of erythropoietin.

Erythropoietin acts like an endocrine hormone on its target cells.

The target tissue upon which erythopoietin acts are the cells in the bone marrow.

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