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.
A typical German Shepherd female is 23 inches at the shoulder and 65 pounds. A typical German Shepherd dog (male) is 25 inches at the shoulder and 85 pounds. A typical Labrador Retriever is 22.5 inches at the shoulder and 60 pounds.A typical Labrador Retriever dog (male) is 23.5 inches at the shoulder and 70 pounds.Most pet Labrador owners tend to over feed their dogs. typical German Shepherd dog (male) is 25 inches at the shoulder and 85 pounds. A typical Labrador Retriever is 22.5 inches at the shoulder and 60 pounds.