Muscle is excitable because it can be stimulated in order to cause contraction. Stimulation comes from the nervous system via electric signals/action potential that travels frâ¦om neuron through axon to muscle tissue.
Breed Profile--Written By Tiami Coleburg Breed: Labrador Retriever Owner Level: Suitable for some active and involved first time owners. Average Life Span: 12-14 years Average Weight: Male weights range 65-80 pounds. Female weights range 55-70 pounds. Average Weight Male height ranges from 22 1/2 to 24 1/2 inches high at the shoulder. Female height ranges from 21 1/2 to 23 1/2 inches at the shoulder. Color And Coat: True Labrador Retrievers only come in: black, shades of chocolate, and yellow.
Average Weight Average Height ID ID; Labrador Retriever: Sporting: 3 cups: 4 cups: 3.5 cups: 73 pounds: 24 inches: German Shepherd: Herding: 3 cups: 4 cups: 3.5 cups: 85 pounds: 25 inches: Golden Retriever: Sporting: 2.5 cups: 3 cups: 2.75 cups: 70 pounds: 24 inches: Boxer: Working: 3 cups: 4 cups: 3.5 cups: 73 pounds: 24 inches: Doberman Pinscher: Working: 3 cups: 4 cups: 3.5 cups: 78 pounds: 27 inches: Weimaraner