________ is a collection of air or gas in the thoracic cavity as the result of a stab wound or gunshot wound to the chest.
A. Emphysema
B. Bronchiectasis
C. Pneumoconiosis
D. Pneumothorax
Answer: D
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Which of the following is NOT a second messenger utilized by G-proteins?
A) Ca2+ B) Na+ C) cyclic GMP D) Phosphatidyl inositol
Tubular reabsorption ________.
A) includes substances such as creatinine B) by active mechanisms usually involves movement against an electrical and/or chemical gradient C) by passive processes requires ATP to move solutes from the interior of the tubule to the blood D) is a way for the body to get rid of unwanted waste
Insulin, when released into the bloodstream by the islets of Langerhans, causes blood sugar levels to rise
Indicate whether the statement is true or false
Which statement about iron is incorrect?
a. It is found in the heme portion of the hemoglobin molecule. b. It is converted into bilirubin upon erythrocyte degradation. c. It readily combines reversibly with O2. d. Its deficiency in the diet can lead to anemia. e. Its deficiency may be due to inadequately absorption from the digestive tract.