A seventy-five -year-old man goes to his doctor to complain of shortness of breath and a chronic cough. He is relieved to discover that he does not have cancer, but is diagnosed with emphysema. What anatomical changes occur in the lungs of a person with this disease?
What will be an ideal response?
Emphysema is a disease wherein the alveoli of the lungs are destroyed over time, as the walls are broken down, making the spaces larger and reducing the surface area of the respiratory exchange surface. This condition is caused by exposure to either smoke or other environmental irritants over a long period of time. The damage is progressive.
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In order to maintain cellular homeostasis, an exchange pump ejects ________ ions from the cell and imports ________ ions
A) potassium; calcium B) sodium; calcium C) potassium; sodium D) sodium; potassium E) calcium; sodium
Describe the role of calcium in the crossbridge cycle of the sliding filament mechanism
What will be an ideal response?
What socket of the coxal bone articulates with the femur?
A) iliac spine B) acetabulum C) pubic symphysis D) obturator foramen
Excessive aldosterone secretion would induce ________.
A. no change in plasma ion balance B. decreased plasma chloride C. decreased plasma potassium D. decreased plasma sodium