Slow waves with very high peaks that occur during the third and fourth stages of the sleep cycle are called _____ waves

Your sister is pregnant. She has always been health conscious and exercises regularly. She is planning on engaging in aerobic exercise by continuing to go to her exercise classes. According to most physicians, she should ______________

a. be very careful as this type of exercise during pregnancy could lower muscle mass b. exercise regularly as she will stimulate the circulatory system and muscles c. exercise regularly because it lowers the chances of teratogens reaching the fetus d. avoid aerobic exercise because it has been shown to dangerously increase fetal heart rate

The hormone that stimulates production of sperm and maturation of ova is

a. follicle-stimulating hormone b. luteinizing hormone c. estrogen d. testosterone