Ligament & Meniscus. Related topic Background Each knee has two menisci. They are commonly called âthe cartilageâ, although this is not strictly accurate. There is one on the medial (inner) side of the knee and one on the lateral (outer) side of the knee. They are C, or crescent shaped, and serve to cup the femur as it sits on the tibia to improve the congruity of the joint.
expiratory reserve volume. Type:Term. Definitions. 1. the maximal volume of air (about 1000 mL) that can be expelled from the lungs after a normal expiration.
1 The lung volumes that can be measured using a spirometer include tidal volume (TV), expiratory reserve volume (ERV), and inspiratory reserve volume (IRV).  Residual volume (RV) is a lung volume representing the amount of air left in the lungs after a forced exhalation; this volume cannot be measured, only calculated.