Biomechanics

Biohybrid Model Uses Organic Lungs, Synthetic Muscles to Re-Create Respiration Mechanics

Discussed in APL Bioengineering, researchers created a high-fidelity respiratory simulator that accurately represents the interplay between the abdomen, diaphragm, lungs and pleural space, the fluid-filled membrane surrounding the thorax and lungs. The model, using swine lungs, soft robotic materials and artificial muscles, allows precise tuning of pressure in each part of the system, so specific disease conditions can be tested. It also proved extremely useful for testing ventilator-only respiration by removing the elastomeric diaphragm.

Why males pack a powerful punch

Elk have antlers. Rams have horns. In the animal kingdom, males develop specialized weapons for competition when winning a fight is critical. Humans do too, according to new research from the University of Utah. Males’ upper bodies are built for more powerful punches than females’, says the study, published in the Journal of Experimental Biology, suggesting that fighting may have long been a part of our evolutionary history.