Human Body Systems

Front

What are the stages of development after fertilization?

Back

The correct sequence is: morula, blastocyst, gastrulation, neurulation, embryo.

Front

How do vaccines provide immunity?

Back

Vaccines cause the body to go through a specific immune response which creates memory B cells for future use.

Front

Can the same B cells that fought the flu fight strep?

Back

No. Each B cell is capable of recognizing one specific pathogen.

Front

What effect does dehydration have on blood pressure?

Back

Dehydration decreases blood volume, which decreases blood pressure.

Front

Why are antibiotics ineffective against viruses?

Back

Antibiotics are only effective on bacteria, not viruses.

Front

What is a morula?

Back

A morula is a solid ball of cells that forms after the fertilized egg divides.

Front

What is a blastocyst?

Back

A blastocyst is a hollow ball of cells that forms after the morula stage and implants in the uterus.

Front

What is gastrulation?

Back

Gastrulation is the process during embryonic development where the three germ layers form.

Front

What is neurulation?

Back

Neurulation is the process that forms the neural tube, which develops into the central nervous system.

Front

What are memory B cells?

Back

Memory B cells are long-lived immune cells that remember past infections and respond quickly upon re-exposure.