Muscular System Flashcards

Extensibility means that muscles can be stretched to their normal resting length and beyond to a limited degree.

Contractility refers to the capacity of muscle to contract or shorten forcefully.

Elasticity means that if muscles are stretched, they recoil to their original resting length.

<p>Excitability means that muscle responds to stimulation by nerves and hormones.</p> Signup and view all the answers

<p>Striated muscle tissue features repeating functional units called sarcomeres.</p> Signup and view all the answers

<p>A tendon is a flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to a bone.</p> Signup and view all the answers

<p>A fascicle is a separately published installment of a book or other printed work.</p> Signup and view all the answers

<p>A myofibril is any of the elongated contractile threads found in striated muscle cells.</p> Signup and view all the answers

<p>Cytokine is any of a number of substances secreted by immune system cells that affect other cells.</p> Signup and view all the answers

<p>Satellite cells are precursors to skeletal muscle cells, able to give rise to muscle cells.</p> Signup and view all the answers

<p>A muscle stem cell is a type of stem cell that resides in skeletal muscle and enables muscle regeneration.</p> Signup and view all the answers

<p>The main function of the muscular system is movement.</p> Signup and view all the answers

<p>Each skeletal muscle fiber is a single cylindrical muscle cell bundled together.</p> Signup and view all the answers

<p>Muscles repair by fusing damaged fibers together to form new muscle protein strands.</p> Signup and view all the answers

<p>The four characteristics are contractility, excitability, extensibility, and elasticity.</p> Signup and view all the answers