| Patients may succeed in passing the food bolus by repeated swallowing, by performing the Valsalva maneuver or by making a positional change. |
| During summer and autumn, jays routinely make hundreds of food caches per day, placing each saliva-coated bolus in a separate arboreal site. |
| Parent tree swallows deliver food to nestlings in a bolus, making it difficult to determine either the quantity or quality of food. |
| The bolus passes from the vallecula into the piriform sinuses, before entering the esophagus. |
| The cardiac sphincter opens because of increasing pressure in the esophagus from the food bolus. |
| Another factor that may limit uptake of the radiopharmaceutical is the transient nature of the tracer bolus presented to the cells in vivo. |
