hypoxia triggers increased ___ secretion?
is it carbon monoxide?
or erythropoietin?
After oxygen diffuses into pulmonary capillaries, it diffuses into ___ and binds with __?
a;interstitial fluid;RBC?
b;interstitial fluid;C02?
c;RBC:hemoglobin?
d;RBC:C02?
the second is obviously c.
the first is erythropoietin.
Hypoxia triggers increased erythropoietin secretion.
After oxygen diffuses into pulmonary capillaries, it diffuses into RBC (red blood cells) and binds with hemoglobin. The correct option is c;RBC:hemoglobin.
To determine the answer to these questions, let's break them down:
Question 1: Hypoxia triggers increased secretion of which substance?
To answer this question, we need to understand what hypoxia is and what substances might be secreted in response to it.
Hypoxia refers to a condition where there is a deficiency of oxygen in the body or tissues. During hypoxia, the body may respond by increasing the secretion of certain substances to compensate for the low oxygen levels.
Now, let's look at the options provided:
- Carbon monoxide (CO): Carbon monoxide is actually a gas that interferes with the ability of red blood cells to transport oxygen. It does not trigger increased secretion.
- Erythropoietin (EPO): Erythropoietin is a hormone produced by the kidneys. When the body detects low oxygen levels, the kidneys increase the secretion of EPO, which stimulates the production of more red blood cells. Erythropoietin is the correct answer as it is secreted in response to hypoxia.
Therefore, the correct answer to the first question is erythropoietin.
Question 2: After oxygen diffuses into pulmonary capillaries, it diffuses into what and binds with what?
To answer this question, we need to understand the pathway of oxygen in the body after it enters the pulmonary capillaries.
- The oxygen that diffuses into the pulmonary capillaries binds with hemoglobin, a protein found in red blood cells (RBCs). This forms oxyhemoglobin.
So, the correct answer to the second question is c) RBC: hemoglobin. Oxygen diffuses into the RBCs and binds with hemoglobin.
I hope this explanation helps you understand how I arrived at the answers. Let me know if you have any further questions!