A 44-year-old woman experienced an acute episode of severe abdominal pain and suddenly vomited a large volume of bloody fluid. Her husband had her brought to the hospital by ambulance
The emergency room physician estimated the she had lost about 600 mL of blood. On physical examination, she had a blood pressure of 85/65 mm Hg, and was tachycardic with a heart rate of 110 beats/min. The patient's skin was cool, moist, and pale. The physician tentatively diagnosed her to have a bleeding ulcer.
What would the acute blood loss from her duodenal ulcer be expected to do?
A. decrease central venous pressure and increase cardiac output
B. increase central venous pressure and decrease mean arterial pressure
C. decrease central venous pressure and decrease cardiac output
D. increase mean arterial pressure and decrease cardiac output
E. decrease central venous pressure and increase aortic pulse pressure
ANS: C
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Structure J represents a
A) myosin head.
B) sarcomere.
C) T tubule.
D) myofilament.
E) myofibril.
The alveolar wall is ____________________ (how many?) cell layer(s) thick. The wall of the pulmonary capillaries surrounding an alveolus is cell ____________________ (how many?) layer(s) thick
Fill in the blank(s) with correct word
Intrapleural pressure normally does not equilibrate with the intra-alveolar pressure
Indicate whether the statement is true or false
Place the following steps of endomembrane system function in the correct order
1. Golgi apparatus receives transport vesicles from the RER. 2. Ribosomes on the RER synthesize proteins. 3. Proteins are packaged into transport vesicles. 4. Modified proteins may be secreted from the cell by exocytosis. 5. Proteins are modified by the Golgi apparatus. A) 3, 2, 1, 4, 5 B) 2, 3, 1, 5, 4 C) 1, 2, 3, 5, 4 D) 2, 4, 3, 1, 5