Signs of redness, heat, swelling, pain, and loss of motion are indicative of which of the following?

Injuries to the chest can be life threatening because:

A) damage to the lungs and chest wall can greatly affect perfusion. B) chest injury patients are at great risk for infection sepsis. C) damage to the stomach and kidneys cause significant blood loss. D) chest injuries cause a lot of pain.

What is the short-term exposure limit value?

a. The amount of a substance, measured in milligrams per body mass, that kills half of a group of laboratory animals to which the substance is administered during a preestablished time b. The concentration of a substance to which workers can be exposed continuously for a period of approximately 15 minutes without suffering irritation, chronic or irreversible tissue damage, or narcosis sufficient to increase the risk of accidental injury, impair self-rescue, or materially reduce work-related efficiency c. The concentration of a substance, measured in parts per million, that kills half of a group of laboratory animals to which the substance is administered during a preestablished time d. The concentration in milligrams per kilogram (mg/kg) of a substance that kills a laboratory animal within 48 hours