13. Specialized nerve endings on sensory neurons that detect changes inside and outside the body are called ______________________. 14. Neurons that send impulses from the brain and spinal cord to other systems are called ______________________. NERVES _____ 15. Nerves do NOT contain a. muscle fiber. b. blood vessels. c. axons. d. connective tissue. 16. Nerves may contain the axons of both ______________________ and ______________________ neurons.

Question

13. Specialized nerve endings on sensory neurons that detect changes inside and outside the body are called ______________________. 14. Neurons that send impulses from the brain and spinal cord to other systems are called ______________________. NERVES _____ 15. Nerves do NOT contain a.  muscle  fiber. b.  blood  vessels. c.  axons. d.  connective  tissue. 16. Nerves may contain the axons of both ______________________ and ______________________ neurons.

GPT-4o mini · Answer

13. Specialized nerve endings on sensory neurons that detect changes inside and outside the body are called **receptors**. 14. Neurons that send impulses from the brain and spinal cord to other systems are called **motor neurons**. 15. Nerves do NOT contain **a. muscle fiber**. 16. Nerves may contain the axons of both **sensory** and **motor** neurons.