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.
By admin on Mar 20, 2009 in Labrador Health. Labrador Retrievers are categorized as a mid-large size dog, in terms of average breed size boundaries. Though there can be some significant variances in the full-grown weight of a Labrador Retriever, most healthy Labradors are very similar in weight and height.However, there can be as much as a 10-20 pound difference in a Labradorâs weight, depending on the gender.An average full-grown male Labrador Retriever weighs anywhere between 65 and 80 lbs. Males are characteristically larger than females, though are just as prone to becoming overweight.n average full-grown male Labrador Retriever weighs anywhere between 65 and 80 lbs. Males are characteristically larger than females, though are just as prone to becoming overweight.