EBK BIOLOGY
6th Edition
ISBN: 9780134819150
Author: Maier
Publisher: VST
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Chapter 20, Problem 4LTB
Summary Introduction
Introduction:
The heart is the muscular organ which is approximately the size of one’s fist. It is located behind and slightly left of the breastbone. The function of the heart is to pump the blood by arteries and veins. The whole network of arteries, veins, and heart is termed as cardiovascular system.
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biliverdin
macrophages
urobilinogen
bilirubin
Erythrocytes are continually replaced. Worn-out erythrocytes are lysed in the spleen as they pass through splenic
cords in the spleen.
digest these cell parts, and separate heme from the globin units
of hemoglobin. The globin proteins are broken down into amino acids and recycled. The heme pigment is
converted into
, then
, and released into the blood. It is
concentrated in urine, producing its yellow color. The liver removes additional bilirubin and secretes it into bile.
When released into the small intestine, bacteria transform it into
which makes feces
brown.
What units describe Hemoglobin and in your own words describe what Hemoglobin is
What units describe Hematocrit and in your own words describe what Hematocrit is
Pick one condition that casues high or low hemoglobin and explain why it causes high or low condition
Pick one condition that casues high or low hematocrit and explain why it causes high or low condition
Hemoglobin will bind oxygen and release CO2 in places where there is a higher concentration of O2, lower concentration of CO2, lower temperature and lower acidity (as it is in lungs) and will do the reverse – release oxygen and bind CO2 - in places where there is a lower concentration of O2, higher concentration of CO2, higher temperature and higher acidity (as it is in working muscles).
True
False
While white blood cells never leave the circulation, red blood cells regularly leave it and travel by lymphatic system or find home in other tissues, e.g., lymph nodes, spleen, etc.
True
False
Blood clotting (coagulation) is a complex process involving many factors and it exhibits positive feedback loops: many of the factors also stimulate production of their own precursors.
B lymphocytes mature in the thymus while T lymphocytes mature in the bone marrow
True
False
Antibodies are molecules on the surfaces of foreign…
Chapter 20 Solutions
EBK BIOLOGY
Ch. 20 - Describe how contraction of the diaphragm allows...Ch. 20 - Prob. 2LTBCh. 20 - Alveoli are ___________. small air sacs at the...Ch. 20 - Prob. 4LTBCh. 20 - Prob. 5LTBCh. 20 - Prob. 6LTBCh. 20 - Prob. 7LTBCh. 20 - Prob. 8LTBCh. 20 - Heart attacks ___________. are typically caused by...Ch. 20 - Prob. 10LTB
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- In which of the following disorders, blood has a defective hemoglobin? A Hematoma B Hematuria C Hemophilia D Sickle cell anemiaarrow_forwardWith the appearance of strong oxidizers in blood in erythrocytes one of the following substances is formed first of all: 1. carbhemoglobin 2. carboxyhemoglobin 3. oxyhemoglobin 4. methemoglobin 5. deoxyhemoglobinarrow_forwardbiliverdin macrophages urobilinogen bilirubin Erythrocytes are continually replaced. Worn-out erythrocytes are lysed in the spleen as they pass through splenic cords in the spleen. Blank 1 digest these cell parts, and separate heme from the globin units of hemoglobin. The globin proteins are broken down into amino acids and recycled. The heme pigment is converted into Blank 2 , then Blank 3 , and released into the blood. It is concentrated in urine, producing its yellow color. The liver removes additional bilirubin and secretes it into bile. When released into the small intestine, bacteria transform it into Blank 4 , which makes feces brown.arrow_forward
- Which of the following would you LEAST expect to be associated with a low hematocrit? High altitude Low iron Low vitamin B12 Low levels of erythropoietin Valine substitution for a glutamate in ß-hemoglobinarrow_forwardWhich of the following components of the blood binds to dissolved proteins and cations to help maintain pressure in the blood? red blood cells white blood cells platelets plasma albuminarrow_forwardDuring pregnancy a special fetal hemoglobin was made with the following characteristics: It binds oxygen with an affinity lower than adult hemoglobin. It does not bind carbon monoxide. It is a monomer. It does not use heme as a co-factor. It binds oxygen with an affinity higher than adult hemoglobin.arrow_forward
- The function of hemoglobin is to carry dissolved blood gases. carry bicarbonate ion. aid in the process of blood clotting. produce antibodies. stimulate erythropoiesis.arrow_forwardAll are characteristics of erythrocytes (red blood cells) EXCEPT: -makes up large percentage of total blood cells -integral to inflammatory and immune responses -high surface area to volume ratio due to biconcave disk shape -lacking a nucleus or mitochondria -involved with carrying oxygen to body cellsarrow_forwardElsa’s pediatrician suspects that she has thalassemia. Which of the following statements is true of thalassemia? Thrombocytes tend to “stick together” and form blood clots. Thalassemia is always caused by diet and environmental factors, not genetic makeup. Thalassemia is also known as erythroblastic anemia and involves a reduced amount of hemoglobin in the blood. Thalassemia is a type of hemophilia and is often hereditary in females.arrow_forward
- IF you have too many white blood cells, due to bacterial infection, then you have leukopenia. TRUE or false If you have anemia, then your blood has a reduced oxygen-carrying ability TRUE OR FALSEarrow_forwardWhat sentences isn't true? Platelets are fragments of cell The granules in basophils contain histamine Red blood cells don't have a nucleus Red blood cells are the smallest cells inside of the body. Each hemoglobin molecule can carry one molecule of molecular oxygen.arrow_forwardIn your own words, explain why hemoglobin is important in hematology.arrow_forward
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