Answer:
The axons that innervate smooth muscle fibers do not have typical branching end feet of the type in the motor end plate on skeletal muscle fibers. ... In the varicosities are vesi-cles similar to those in the skeletal muscle end plate that contain transmitter substance
5. Frequency is the number of wavelengths which is measured in hertz
6. speed = wavelength x frequency
Answer: A group of cells that have the same function is called a tissue.
A group of tissues that have the same function is called an organ.
A group of organs that have the same functions is called an organ system
(these are just in case you need them)
hope this helps