18.1 MB (863.0 KB compressed)
2992 x 2116 pixels
25.4 x 18.0 cm ⏐ 10.0 x 7.1 in (300dpi)
ANIMATED HEALTHCARE LTD / SCIENCE PHOTO LIBRARY ANIMATED HEALTHCARE LTD / SCIENCE PHOTO LIBRARY
Vomiting reflex. Computer artwork of the vomiting reflex. The reflex starts when a message is sent to the vomiting centre of the brainstem (at base of brain, blue). The message may be sent from the stomach, and be due to an infection or overeating, or may come from elsewhere in the brain and be due to brain tumour or injury, motion sickness or migraine. Offensive odours and pregnancy can also cause vomiting. The vomiting centre sends nerve impulses to the stomach, diaphragm and abdominal wall. The impulses cause the bottom of the stomach to constrict, the diaphragm to push down and the abdominal wall to press inwards, ejecting the contents of the stomach up through the oesophagus and out of the mouth.
Model release not required. Property release not required.