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Did you know?
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
Did you know?
The average adult has about 21 square feet of skin.
Did you know?
Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
Did you know?
Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
Did you know?
The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
![Critical thinking involves analysis in which the nurse examines patient data available from a variet](https://biology-forums.com/gallery/47/medium_2137_17_05_12_1_44_01.jpeg)
![Cerebral angiography. The four angiograms each reveal the distribution of blood vessels supplying th](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_48_58_94111673.jpeg)