More than one choice may apply.
Which would lead to increased erythropoiesis?
a. Chronic bleeding ulcer
b. Reduction in respiratory ventilation
c. Decreased level of physical activity
d. Reduced blood flow to the kidneys
Introduction:
When oxygen level decreases in the blood, kidney produces a hormone named as erythropoietin that causes the stimulation of the bone marrow to produce more RBCs (red blood corpuscles). This process is known as erythropoiesis.
Answer to Problem 1MC
Correct answer:
Chronic bleeding ulcer, reduction in respiratory ventilation, and reduced blood flow to the kidney lead to increased erythropoiesis.
Explanation of Solution
Explanation for correct answers:
Option (a) is given as a chronic bleeding ulcer. Discontinuity or break in the membrane of an organ that prevents the organ from carrying out its normal function is known as an ulcer. After some time an untreated ulcer may transform into a chronic bleeding ulcer. An excessive loss of the blood leads to decrease in the oxygen level and this event triggers erythropoiesis. Hence, option (a) is correct.
Option (b) is given as a reduction in the respiratory ventilation. Reduction in the respiratory ventilation leads to lower oxygen level in the body that stimulates erythropoiesis, which increases the RBC count in the blood. Hence, option (b) is correct.
Option (d) is given as reduced blood flow to the kidneys. When blood flow reduces in the kidneys, it indicates low RBC count as well as low oxygen level in the body. To compensate for the normal oxygen transmission in the body, kidney produces a hormone called erythropoietin that induces the RBC production by stimulating the bone marrow. Hence, option (d) is correct.
Explanation for the incorrect answer:
Option (c) is given as decreased level of physical activity. During a physical activity, the body uses more oxygen to produce energy. This decreases the oxygen level in the blood and increases the production (erythropoiesis) of the RBCs in the body. A decreased level of physical activity has sufficient oxygen for energy purposes and does not induce erythropoiesis. So, it is an incorrect option.
Hence, option (c) is incorrect.
Thus, increased erythropoiesis is the result of chronic bleeding ulcer, reduction in the respiratory ventilation, and reduced blood flow to the kidneys.
Want to see more full solutions like this?
Chapter 10 Solutions
Essentials Of Human Anatomy & Physiology Plus Masteringa&p Access Card Lab Manual Package (12th Edition)
- Which is the best indicator of iron STORES in the body? Question 43 options: a) Hemoglobin b) Ferritin c) Hematocrit d) Transferrinarrow_forwardAnswer both parts of the following:A) Discuss how pulmonary oedema and peripheral oedema may occur in a patient with heart failure. B) Discuss the mechanisms of actions of the main classes of drugs currently available to treat congestive heart failure, and how they may be beneficial in improving the condition of the patient.arrow_forwardWhich statement best describes Arteries? A) They have thin walls and transport blood away from the heart B) They have thick walls and transport blood toward the heart C) They have thin walls and transport blood toward the heart D) They have thick walls and transport blood away from the heartarrow_forward
- The reason oxygen diffuses into the tissues seen in internal respiration? a. the temperature differences b. the pressure gradient or difference in partial pressure of oxygen in arterial blood and that in a metabolically active tissue c. the larger the partial pressure of the veins d. .the ability of hemoglobin to bind avidly with oxygenarrow_forwardWhat would happen to people who have an open wound and whose blood did not clot naturally.arrow_forwardWhich statement describes hemoglobin's cooperativity? A. When tetrameric hemoglobin binds one molecule of O2, its shape changes to make it bind more readily to a second molecule of O2. B. When tetrameric hemoglobin binds one molecule of O2 its shape changes, which prevents binding of any more O2 molecules. C. When oxygen is present in the blood, the shape of hemoglobin changes to allow oxygen to bind to it. D. When the oxygen concentration in blood decreases, then hemoglobin changes its shape to retain oxygen more readily. E. None of the above answer choices correctly describes cooperativity.arrow_forward
- The portal vein brings blood from the intestines to the liver. Which statement is most likely true regarding the portal vein? A. It carries oxygenated blood at low pressure. B. It carries oxygenated blood at high pressure. C. It carries deoxygenated blood at low pressure. D. It carries deoxygenated blood at high pressure.arrow_forwardGiven: One night your body goes crazy and the amount of albumin in your blood doubles. a. What will this do to your blood pressure, and why? b. What are actions your body could take to reverse this change in blood pressure, and where would this take place? (Answer a and b)arrow_forwardSuppose a blood clot forms in the leg, then breaks free as an embolus. Is it more likely to become stuck in a lung or in the brain? Explain your reasoning.arrow_forward
- The interventricular septum and the intra-atrial septum separate the: a) chambers of the heart b) chambers of the lungs c) aorta and pulmonary artery f) bicuspid and tricuspid valves answer: A explain for each choices why they are correct or incorrect answerarrow_forwardErythropoietin is produced by a. the kidneys. b. the liver. c. the lungs. d. the bone marrow.arrow_forwardCertain medical conditions cause the simple squamous epithelium in the lung to thicken. Predict the consequences of this thickening?arrow_forward
- Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage LearningEssentials Health Info Management Principles/Prac...Health & NutritionISBN:9780357191651Author:BowiePublisher:Cengage