A single motor neuron and all fibers it innervates A fiber that reaches it peak tension relatively quickly Pattern of fibers within a muscle with short fibers attaching to one or more tendons Passive elastic property of muscle derived from the tendons A. Fast twitch fiber B. Pennate fiber arrangement C. Series elastic component D. Motor unit

Which sequence correctly shows the path of carbon dioxide during repiration?

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.

Why are common names a problem for scientist?