|
|
Did you know?
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
Did you know?
Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
![A client is having an endoscopy performed by a physician who views the upper gastrointestinal intern](https://biology-forums.com/gallery/47/medium_18099_24_10_12_4_35_00.jpeg)
![(A) Dilation stage: uterine contractions cause dilation of the cervix; (B) expulsion stage: birth, ...](https://biology-forums.com/gallery/47/medium_660366_15_03_17_5_37_23_27147687.jpeg)