12 Questions
What is the pressure in the veins of the feet when a person experiences a +5G force?
450 mm Hg
What is the fracture threshold for the vertebrae in a sitting position when subjected to acceleratory forces?
20G
What effect does acute negative G force have on the head?
Intense momentary hyperemia
How does submersion in water help in minimizing the effects of high G forces?
It reduces blood pooling in the legs
Why do astronauts typically use reclining seats during launch?
To better withstand linear acceleratory forces
What is the purpose of using pure O2 in space missions?
To reduce the risks of lung problems like ATELECTASIS
What is the main cause of Acute Cerebral Edema (HACE) according to the text?
Local vasodilation and increased endothelial cell permeability
Which of the following effects is associated with Acute Pulmonary Edema (HAPE)?
Pulmonary dysfunction
What is a characteristic feature of Chronic Mountain Sickness (CMS) as mentioned in the text?
Enlargement of the right side of the heart
What is the consequence of positive G-forces (G+) according to the text?
Blood pooling in lower extremities
Which sequence of events leads to Chronic Mountain Sickness (CMS) as discussed in the text?
Increase in blood viscosity, vasoconstriction of pulmonary arterioles, alveolar arteriolar spasm
What are the effects of negative G-forces (G-) according to the text?
Vision impairment, loss of consciousness
Learn about the causes and effects of Acute Cerebral Edema (HACE) and Acute Pulmonary Edema (HAPE) associated with Acute Mountain Sickness. Understand how local vasodilation and inflammatory cytokines contribute to these conditions.
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