The embryonic stage of pregnancy lasts from
a. 8 weeks after conception to birth

c. 2 weeks after conception to 8 weeks
d. 2 days after implantation to 8 weeks

List and explain 3 types of parasomnia

The heart and lung are located in which cavity ? thoracic

Explain the signs and symptoms of alzheimer's disease with the following concepts: what causes this degenerative disease to occur in the brain? what would be the signs a patient should look for? explain.