« previous next »
« previous next »
 

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Mendel's breeding program that produced a 9 : 3 : 3 : 1 ratio Mendel's breeding program that produced a 9 : 3 : 3 : 1 ratio
Mendel's breeding program that produced a 9 : 3 : 3 : 1 ratio Mendel's breeding program that produced a 9 : 3 : 3 : 1 ratio
Sample Program for Changing Daily Caloric Intake (cont.) Sample Program for Changing Daily Caloric Intake (cont.)
Sample Exercise Program for Healthy Older Adults (cont.) Sample Exercise Program for Healthy Older Adults (cont.)
Execution in the United States Execution in the United States
A Successful Physical Fitness Program Uses FITT Principles A Successful Physical Fitness Program Uses FITT Principles
Video: Introduction to Spirometry

For a complete list of videos, visit our video library