Bio 2300 Unit 4 Concept B Latest Update Already Passed

Bio 2300 Unit 4 Concept B Latest Update Already Passed Describe the structures to which the diaphragm is attached: Anterior-- Xiphoid process of sternum Anterolateral-- Costal cartilages of ribs 6-10 Posterolateral-- portion of rib 12 Posterior-- Bodies of L1-L3 lumbar vertebrae Define epimysium The connective tissue covering of a muscle Name the two muscles whose epimysiums blend with that of the diaphragm: Quadratus lumborum and psoas major Describe the central tendon of the diaphragm The central tendon is the crescent shaped tendon where all the fibers of the diaphragm muscle converge Aortic hiatus Opening posterior to the diaphragm, created by two overlapping extensions of the diaphragm muscle. **Not part of the diaphragm** Caval foramen Found in the central tendon, allows passage of the inferior vena cava, the large vein which drains the abdominal cavity. Esophageal hiatus Created by slips of diaphragm muscle that cross over each other, creating an oval opening in the diaphragm. Name the two sets of intercostal muscles that *ELEVATE* the ribs External intercostals and internal intercostals (intercartilaginous) Name the two sets of intercostal muscles that *DEPRESS* the ribs Internal intercostals (interosseous) and transverse thoracis Which set of intercostal muscles has a *POSTERIOR* membrane? Internal intercostals Which set of intercostal muscles has an *ANTERIOR* membrane? External intercostals Which set of intercostals lies directly under the parietal pleura? Innermost intercostals Name three sets of muscles that are accessory muscles for a forced *INHALATION* Pec Major, Pec Minor, and Serratus Anterior