If you inject an opioid, how long will it take to affect your body?

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

How can people get cancer? what types of cancer are there? plz i’ll mark u brainliest

Which is a method that can people manage weight in a healthy manner? relying on diet pills tracking caloric intake limiting the variety of food choices participating in the latest fad diet