La biomecánica del oído interno revela un origen del Triásico tardío para la endotermia de los mamíferos
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Ver abstracta en PubMed
Resumen
Este resumen es generado por máquina.La endotermia, la capacidad de generar calor corporal interno, evolucionó abruptamente en los primeros antepasados de los mamíferos durante el Triásico Tardío. Este rasgo crucial surgió junto con el aumento de la temperatura corporal y las capacidades metabólicas mejoradas.
Área De La Ciencia
- Paleontología
- Biología evolutiva
- Fisiología
Sus Antecedentes
- La endotermia es un rasgo clave para los mamíferos y las aves, pero su origen evolutivo en los mamíferos sigue sin estar claro debido a la evidencia fósil ambigua.
- Los conductos semicirculares del oído interno son cruciales para el control motor y la conciencia espacial, y su función es sensible a la temperatura corporal.
Contact us Si estos videos no son relevantes.
Contact us Si estos videos no son relevantes.
Videos de Conceptos Relacionados
Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while...
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
The basilar membrane extends from the basal end of the cochlea near the oval window to the apical end at its tip....
The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
Phylogenetic trees illustrate the evolutionary relationships among these organisms. Scientists infer organisms’ common ancestry by evaluating shared morphological and genetic characteristics....