TRUE OR FALSE. PLEASE ANSWER ALL OTHERWISE PASS ON. THANK YOU! 1. Human blood co
ID: 3523694 • Letter: T
Question
TRUE OR FALSE. PLEASE ANSWER ALL OTHERWISE PASS ON. THANK YOU!
1. Human blood contains more white blood cells than red blood cells? true or false
2. winds tend to have thick walls of elastic fibers and smooth muscle? True or false
3. blood plasma comprises the majority of whole blood? True or false
4. all arteries contain blood high in oxygen, while all veins contains blood low in oxygen? True or false
5. a low oxygen content in blood serves to increase the production of red blood cells by the bone marrow? True or false
6. Wayne's have valves, whereas arteries do not? true or false
7. at the arterial end of a capillary, blood pressure is usually lower than osmotic pressure? True or false
8. as the blood flows away from the heart and goes through smaller and smaller vessels in a closed circulation, it travels under ever - increasing pressure? True or false
9. white blood cell count in particular could indicate whether or not an infection is present? True or false
10. the blood in the pulmonary vein contains more oxygen that the blood in the pulmonary artery? True or false
ONE WORD ANSWER
1. this group of disorders is characterized by an insufficient number of red blood cells or by red blood cells that do not have enough hemoglobin?
2. Give the medical term for high blood pressure?
3. this disorder is the most common of the silver blood clotting disorders that is inherited?
4. give an alternate name for the left atrioventricular valve?
5. name the process by which blood cells are formed?
6. Give the correct medical term for a heart attack?
7. which term refers to a blood clot that dislodges and is transported by the blood to a different region of the body?
8. name the fetal vessel that contains blood with the highest concentration of oxygen?
9. B lymphocytes are responsible for which type of immunity?
10. which term refers to the amount of blood pumped by one ventricle per minute?
11. which type of white blood cell has the lowest percentage in a blood sample?
12. a person with blood type A B has which antibodies?
13. systole refers to?
14. What is the name of the vessel that supplies blood to the arm?
15. diastole refers to?
16. A person with blood type O has which antigen?
Explanation / Answer
TRUE OR FALSE:
1. Human blood contains more white blood cells than red blood cells?
False
Note: The RBC count is 5-6 mil /microliter for men and 4-5 mil / microliter for women, whereas WBC count is 4000 -11000 per microliter of blood.
2. Winds tend to have thick walls of elastic fibers and smooth muscle?
[Note: The question is not typed properly. So the meaning is not clear.
The tunica media layer of blood vessels is made of elastic fibres and smooth muscle. Please consider answer this question yourself from this information. Sorry for the inconvenience.]
3. Blood plasma comprises the majority of whole blood?
True
Note: Average blood volume of an adult is about 5 literes, among which 2.7-3.2 liters is plasma (about 55 % of blood).
4. All arteries contain blood high in oxygen, while all veins contains blood low in oxygen?
False (or Partially True)
Note: Although all the arteries circulate oxygenated blood and veins circulate deoxygenated blood, Pulmonary artery which circulate blood from right ventricle of heart to lungs, carries deoxygentaed blood and Pulmonary veins which circulate blood from Lungs to Left Atrium of heart carries oxygenated blood.
5. A low oxygen content in blood serves to increase the production of red blood cells by the bone marrow?
True
Note: When the oxygen content is low in blood, it gives a signal to kidney to produce Erythropoietin, a hormone. EPO stimulates bone marrow cells to produce more blood cell.
6. Veins have valves, whereas arteries do not?
True
Note: All veins have bicuspid valves, which creates a unidirectional blood flow. Although Aorta and Pulmonary artery contains semilunar valves at their start, although that does not count as arterial valves.
7. At the arterial end of a capillary, blood pressure is usually lower than osmotic pressure?
False
Note: At the arterial end of capillary the blood pressure is about 35 mmHg whereas the osmotic pressure is 25 mmHg. On the other hand the venous end of capillary has blood pressure of 18 mmHg aand osmotic pressure is same 25 mmHg. So Net Filtration Pressure remains high at arteriol end (35 - 25 = 10 mmHg) so that plasma can move across the vessel and reach the tissue.
8. As the blood flows away from the heart and goes through smaller and smaller vessels in a closed circulation, it travels under ever - increasing pressure?
False
Note: As the blood flows through arteries from heart it travels from artery to arteriole to capillaries, which are the thinnest blood vessels, but then again the blood enters into venuoles and then into vein. As blood moves from capillaries to vein the blood vessels widens and the increased pressure is released. So the pressure is not ever increasing
9. White blood cell count in particular could indicate whether or not an infection is present?
True
Note: Normally the white blood cell count remains 4000 to 11000 per microlitre of blood. But during infection, the white blood cell count increases. As the white blood cells are the part of immune system, their number increases to fight the invading pathogens.
10. The blood in the pulmonary vein contains more oxygen that the blood in the pulmonary artery?
True
Note: Pulmonary veins runs from both lungs to left atrium, so they carry newly loaded oxygen and pulmonary artery runs from right ventricle to lungs for freshening the deoxygenated blood. This is the only exception of arteriole and venous blood circulation type.
ONE WORD ANSWER:
1. This group of disorders is characterized by an insufficient number of red blood cells or by red blood cells that do not have enough hemoglobin?
Anemia
Note: Blood anemia is a disease where the red blood cell count drops or not having enough functional rbc. Normally the rbc count is 5-6 million/ microlitre in men and 4-5 million/microlitre in women. There are different forms of anemia, most commons are Sickle cell anemia, thalassemia, iron-deficiency anemia.
2. Give the medical term for high blood pressure?
Hypertension
Note: When the blood pressure increases from normal level 120/80 mmHg, due to increased cardiac output, or any diseased condition, the person is said to have hypertension.
3. This disorder is the most common of the silver blood clotting disorders that is inherited?
Factor V Leiden Disorder
Note: Persons with factor V lenden can not produce the factor V which is essential for blood clotting. This is the most common blood clotting disorder.
4. Give an alternate name for the left atrioventricular valve?
Mitral Valve
Note: It is bicuspid valve or having two leaflets. Mitral valve is present in between left atrium and left ventricle to prevent blood flow from ventricle to atrium.
5. Name the process by which blood cells are formed?
Hematopoiesis
Note: Hematopoiesis is the process in which hematopoietic stem cells of bone marrow gives rise to new blood cells. These cell gives rise to two progenitors cells, common myeloid progenitor, from which RBC, WBC, thrombocytes and mast cells are born; and common lymphoid cells from which blood immune cells are form.
6. Give the correct medical term for a heart attack?
Myocardial Infarction
Note: Heart attack is a medical conditions where blood flow to the heart is blocked and heart muscle starts to die.
7. Which term refers to a blood clot that dislodges and is transported by the blood to a different region of the body?
Thrombosis
Note: Thrombosis is medical condition where a blood clot occurs inside blood vessels and obstruct blood flow. The clot can sometime break and circulate to another part of body where it can hinder blood flow. Arterial thrombosis is more damaging than venous thrombosis, as tissue ischemia or necrosis can arise.
8. Name the fetal vessel that contains blood with the highest concentration of oxygen?
Umbilical Vein
Note: Umbilical vein carries oxygenated blood from placenta to the growing fetal baby. It supplies mothers oxygenated blood to the baby, as the fetus can not breath inside.
9. B lymphocytes are responsible for which type of immunity?
Humoral Immunity (or part of adaptive immunity)
Note: B cells are the part of adaptive immune system, that protect us from invaders by secreting antibodies. Antibody recognizes corresponding pathogen and bring them to phagocytic cells for killing.
10. Which term refers to the amount of blood pumped by one ventricle per minute?
Cardiac Output
Note: Cardiac output is the amount of blood flow per minute from heart. It depends on heart rate and stroke volume.
11. Which type of white blood cell has the lowest percentage in a blood sample?
Basophils
Note: Basophils are the granulocytes that are lowest in number. They are the largest type though. They are responsible for releasing histamin during allergic reaction, part of inflammation process.
12. A person with blood type A B has which antibodies?
None
Note: Individuals with AB blood group does not have neither A nor B antibodies. But they do have a and b antigens. If they had A or B antibodies their own immune system would have targeted their own blood cells.
13. Systole refers to?
Contraction of ventricle chambers of heart when blood is flowing out of heart
14. What is the name of the vessel that supplies blood to the arm?
Brachial artery
Note: It is the major artery of upper arm that supplies oxygenated blood to the arms. It divides into radial and ulnar artery from elbow.
15. Diastole refers to?
Resting period of heart after a succesful systole.
16. A person with blood type O has which antigen?
None
Note: As individual with O blood group has both type of Antibodies, they cannot have either of the antigens, otherwise the antibodies would have killed the blood cells.
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