HLSC 3022C Lecture Notes - Lecture 5: Descending Limb Of Loop Of Henle, Exaggeration, Intramuscular Injection
Document Summary
Larger force production fibers arranged in parallel side by side. Larger physiological cross section pennation is perpendicular to the axis. Longer arc of motion fibers arranged in series end to end greater movement excursion pennation is parallel to the axis. Passive tension serial elastic components parallel elastic components non-contractile tissues elastic limit, ultimate strength, and failure strain rate of length change. Active tension contractile elements proportion of resting length physiological cross section fiber type and pennation activation pattern and velocity. Development ascending limb and end of descending limb of length-tension active curve. 120% none all filaments available to form cross bridges. Combination resting length over lengthened none; no filaments available to cross bridge. Passive tension muscle is passively stretched beyond its resting length as non- contractile tissue is tensioned. Insufficiency active insufficiency polyarticular muscular system limitations inability to produce a sufficient active force (torque) to complete a desired movement through a full range of motion.
