Each muscle fiber is a very short, thin cell. true or false?

The cardiovascular system, which transports blood through the body, is a one-way system. select the best answer from the choices provided. t f

In multiple sclerosis, the immune system destroys the substance that coats and protects nerve fibers in the brain and spinal cord. this causes inflammation and injury to the nerves, and the axons don't conduct impulses as well.

What is the function of the retina?