BIOL 260 Study Guide - Midterm Guide: Myocyte, Endoplasmic Reticulum, Scleroprotein
21 Sep 2016
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Effort arm- the portion of a lever from the fulcrum to the point of effort (where the muscle attaches: aka- imput arm. Resistance arm- the part from the fulcrum to the point of resistance (where the load is) Power lever- produces more force but less speef. Speed lever- produces more speed but less force. A movement that straightens a joint and generally returns a body part to the zero position. Ex: straightening the elbow, wrist, or knee: wince test- if you continued the motion further would it cause you pain or injury. Abduction vs adduction: abduction- the movement of a body part in the frontal plane away from the midline of the body. Ex: moving feet apart to stand spread leg. Pronation vs supination: adduction- movement in the frontal plane back toward the midline, primarily known as forearm movements, supination- movement that turns the the palms to face anteriorly or upward from anatomical position.
