Chapter
The Role of Facial Muscles in Evolution
22:12 - 29:58 (07:46)
The development of control systems for motor neurons in the immediate vicinity of facial nuclei played a significant role in the evolution of facial muscles. The parafacial, a cluster of neurons controlling facial muscles, is in an area rich with neurons controlling eye blinks, nose twitches, lip curls, and lip smacks.
Clips
The development of facial muscles played an important role in the evolution of the human brain and nervous system, as these muscles helped with the regulation of brain fluid and air flow.
22:12 - 25:29 (03:17)
Summary
The development of facial muscles played an important role in the evolution of the human brain and nervous system, as these muscles helped with the regulation of brain fluid and air flow. The trapezoid and parafacial nuclei contain clusters of neurons that control various parts of the face and are connected to other control systems for movement and motor function.
ChapterThe Role of Facial Muscles in Evolution
EpisodeDr. Jack Feldman: Breathing for Mental & Physical Health & Performance
PodcastHuberman Lab
Oxygen exchange in the lungs is dependent on surface area.
25:29 - 27:28 (01:58)
Summary
Oxygen exchange in the lungs is dependent on surface area. The larger the surface area, the more oxygen that can pass through the alveolus into the bloodstream.
ChapterThe Role of Facial Muscles in Evolution
EpisodeDr. Jack Feldman: Breathing for Mental & Physical Health & Performance
PodcastHuberman Lab
Learn how the human body is able to increase oxygen levels from 40 millimeters of mercury to 100 millimeters of mercury to sustain normal metabolism, and how the diaphragm muscle helps expand the membrane enough to move air into the lungs.
27:28 - 29:58 (02:30)
Summary
Learn how the human body is able to increase oxygen levels from 40 millimeters of mercury to 100 millimeters of mercury to sustain normal metabolism, and how the diaphragm muscle helps expand the membrane enough to move air into the lungs.