2. Oygen is mostly transported through the body 8) dissolved in red blood cells

Question

2. Oygen is mostly transported through the body 8) dissolved in red blood cells D) bound to hemoglobin E) bound to carbon. 73. Inhalation in humans is achieved by A) contraction of the dlaphragm C) contraction of muscles of the lung D) relaxation of the diaphragm and chest muscles 74. What type of blood vessel is solely responsible for exchange between the blood and the interstitial fluid? A) capillary B) arteriole C) vein D) artery E) venule Which of the following choices lists the correct path of carbon dioxide moving from the Interior of the body? A) alveoli, bronchi, bronchioles, trachea, larynx. B) alveoli, bronchioles. Bronchi, trachea, larynx, pharynx. C) alveoli, bronchioles, bronchi, trachea, pharynx, larynx. 75. D) alveoll, bronchi, bronchioles, trachea, pharynx, larynx. E) alveoli, trachea, bronchioles, bronchl, pharynx, larynx. 76. What is the most common cause of anemia? A) vitamin deficiency. B) insufficient hemoglobin production C) bone marrow cancer D) low blood pressure. E) iron deficiency. 77. What hormone stimulates the production of red blood cells? A) thymosin. B) thyroxine. C) erythropoietin. D) insulin. E. testosterone. 78. Cancer of white blood cels is called A) a thrombus. B) a stroke. C) erythropoiesis. D) hemophilia. E) leukemia.

Explanation / Answer

Answer:

72). D). Bound to hemoglobin

Explanation:

Oxygen is mostly transported through the body by bounding to hemoglobin.

73). A). Contraction of the diaphragm and chest muscles

Explanation:

Inhalation begins with the contraction of the muscles attached to the rib cage; this causes an expansion in the chest cavity. Then takes place the onset of contraction of the diaphragm, which results in expansion of the intrapleural space and an increase in negative pressure according to Boyle's law. This negative pressure generates airflow because of the pressure difference between the atmosphere and alveolus. Air enters, inflating the lung through either the nose or the mouth into the pharynx (throat) and trachea before entering the alveoli.

74). A). Cappillaries

Explanation: Cappillaries are fine branching blood vessels that form a network between the arterioles and venules.

75). B). Alveoli, bronchioles, bronchi, trachea, larynx, pharynx

76). E). Iron deficiency

Explanation:

Iron deficiency is a very common cause of anemia. This is because iron is major component of hemoglobin and essential for its proper function.

77). C). Erythropoietin

Explanation: Erythropoietin (EPO) is a hormone produced by the kidney that promotes the formation of red blood cells by the bone marrow.

78). E). Leukemia

Explanation:

Leukemia is a cancer caused by an overproduction of damaged white blood cells.

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