Quiz 6 Flashcards
The intrinsic pathway of coagulation is activated by the
activation due to exposed to collagen.
Hemostatic mechanisms can generally stop blood loss from a small vein that is cut.
True
Platelets participate in hemostasis by
aggregating to form a plug and releasing chemicals that promote vasoconstriction.
Platelets function in
All of the answers are correct.
The process of red blood cell production is called
erythropoiesis
People with hemophilia A fail to produce a functional factor VIII; as a result,
they do not have a functional common pathway.
A normal adult hematocrit would be approximately ________%.
45
Red blood cell production increases when
oxygen levels in the tissues decrease.
The porphyrin ring of heme contains an atom of
iron
Which are the two anticoagulants produced by the body?
antithrombin III and heparin
Cessation of breathing is known as _______.
apnea
An individual with emphysema will have greater airway resistance than an individual of the same size without emphysema.
True
During inhalation/inspiration, the total alveolar volume decreases.
False
Doubling the frequency of breathing will cause a greater increase in alveolar ventilation than will doubling the depth of inspiration.
False
The conducting zone contains all of the following EXCEPT the ________.
respiratory bronchioles
At sea level, atmospheric PO2 is about 760 mmHg
False
The diameter of the airways in normal lungs is generally great enough that little resistance is offered to airflow.
True
If the parietal pleura is cut during surgery, the lung on the side of the cut will expand and the chest wall will be compressed.
False
Emphysema is a disease characterized by low lung compliance, obstructed airways, and ventilation-perfusion inequality.
False
The distance between the alveolar air space and capillary endothelium is ________, allowing gases to diffuse ________ between them.
short, rapidly
