Question

question 7 (5 points) which of the following accurately describes the function of motor neurons? a) carry nerve impulses to the brain from skin and other sensory organs b) conduct information between nervous systems in the brain c) carry nerve impulses from the brain to skin, glands, and muscles d) carry automatic nerve signals to organs like the heart question 8 (5 points) how does the brain primarily interpret the strength of a stimulus in the nervous system? a) based on the size of the action potential b) based on how much potassium is in the nerve cell c) based on which chemicals are released at nerve junctions d) based on the frequency of the action potential

Explanation:

Motor neurons are responsible for carrying nerve impulses from the central nervous system (brain and spinal - cord) to effectors such as skin, glands, and muscles. The brain interprets the strength of a stimulus in the nervous system based on the frequency of action potentials. Action potentials are all - or - none events, so their size does not vary with stimulus strength. The amount of potassium in a nerve cell and the chemicals released at nerve junctions are not the primary ways the brain interprets stimulus strength.

Answer:

Question 7: C. Carry nerve impulses from the brain to skin, glands, and muscles
Question 8: D. Based on the frequency of the action potential