| Front | External intercostal muscle |
| Back | Structure: muscles that attach to edges of adjacent ribs within the intercostal space, becoming membranous lateral to the sternum.Fiber direction: anteroinferior (hands-in-pockets)Innervation: intercostal nervesFunction: elevate ribs during normal inspiration |
| Tags | Muscles |
| Front | Diastole |
| Back | Mechanism: period of ventricular relaxation/dialation when the atria are contracting. Aortic and pulmonary valves close ("DUB"). Function: allows the blood to be pumped from the atria into the ventricles -- period during which the ventricles fill with blood. |
| Tags | Cardiovascular |
| Front | Parasympathetic pathway: thoracic region |
| Back | 1. All para/pre axons to the thoracic region originate in the brainstem and course through the vagus nerve that goes inferiorly through thoracic region to abdomen.2. Near target organ, vagus nerve gives off splanchnic branches that course to the cardiopulmonary and esophageal plexuses.3. Para/pre axons synapse at a ganglion on or near the target organ4. All para/post axons are located within the wall of the target organ. |
| Tags | Autonomic nervous system |