Which of the following pregnant women is more likely to have twins or triplets? Christina is a nineteen-year-old unwed mother.

Martina is forty-one and taking fertility drugs.

Shannon is twenty-six and got pregnant despite taking birth control.

Rhiannon is thirty-two and has diabetes.

Shannon

Martina

Rhiannon

Christina

Which of the follow is good way to gauge musculature endurance?

Which description best defines the nervous system and its two main branches? a: the message center of the body, split into the autonomic nervous system and the somatic nervous system b: the control panel of the body, split into the central nervous system and the exterior nervous system c: the message center of the body, split into the central nervous system and the peripheral nervous system d: the control panel of the body, split into the brain and the spinal cord

As you sit in the library with your friend studying for your weekly quiz on the integumentary system, you come upon an article about the hazards of prolonged exposure to the sun's rays. your curious nature leads you to research the subject further. you're fascinated to learn that minimal exposure to the sun allows you skin to manufacture vitamin d, which is important to maintain homeostasis. you also read that although sunscreen can protect you from the ultraviolet (uv) rays of the sun, some medications can actually increase a person's sensitivity to the sunlight.