What is true about all neurons? A. They are bundled together in nerves that are surrounded by a protective sheath.

B. They all transmit signals through axons and receive neurotransmitters through dendrites.

C. They each bring nutrients to the brain and produce a fatty protective layer called myelin.

D. They all send signals from the brain to the body through long axons in the vertebral column.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.