Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

The Respiratory System01:16

The Respiratory System

88.8K
The respiratory system is comprised of the organs that enable breathing. Air enters the nostrils and mouth, followed by the pharynx (throat) and larynx (voice box), which lead to the trachea (windpipe). In the thoracic cavity, the trachea splits into two bronchi that allow air to enter the lungs. The bronchi split into progressively smaller bronchioles and terminate in small groups of tiny sacs in the lungs called alveoli, where gas exchange occurs.
88.8K
Convergent Evolution01:54

Convergent Evolution

31.3K
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.
31.3K
Anatomy of Respiratory System II: Lower Respiratory Tract01:31

Anatomy of Respiratory System II: Lower Respiratory Tract

3.2K
The lower respiratory tract is anatomically composed of several vital structures, including the larynx, trachea, bronchial tree, alveoli, lungs, and pleurae. Each component has a specific function, and all are intricately connected to ensure efficient respiration.
The Larynx
It is located between the pharynx and the trachea, acts as a passageway for air, and hosts several critical structures, such as the epiglottis, vocal cords, and glottis. The epiglottis acts as a gateway, guiding food to the...
3.2K
Anatomy of Respiratory System I: Upper Respiratory Tract01:29

Anatomy of Respiratory System I: Upper Respiratory Tract

4.7K
The upper respiratory tract plays a vital role in the respiratory system, comprising several structures that facilitate air intake and prepare air for the lungs. It also serves as the first line of defense against pathogens and particles. This tract includes the nose and nasal cavity, the oral cavity, the paranasal sinuses, and the pharynx, each with specific functions and features.
Nose and nasal cavity
The nose and nasal cavity represent the main external openings of the respiratory tract....
4.7K
Mechanism of Breathing I: Inspiration01:30

Mechanism of Breathing I: Inspiration

3.0K
Introduction to Inspiration: The Respiratory System in Action
The respiratory system, an essential network for breathing, comprises the conducting and respiratory zones, each playing a crucial role in the overall process of respiration. Let us explore the detailed mechanism of inspiration, or inhalation, which is the first phase of the respiratory cycle.
Pathway of Air during Inspiration
During inspiration, air enters our body through the nose or mouth and moves through the conducting zone,...
3.0K
Pressure Relationships in Thoracic Cavity01:24

Pressure Relationships in Thoracic Cavity

5.7K
Breathing, otherwise known as pulmonary ventilation, is the process of air movement into and out of the lungs. The main mechanisms propelling pulmonary ventilation are atmospheric pressure (Patm), intra-pulmonary (Ppul ) or intra-alveolar pressure (Palv) within the alveoli, and intrapleural pressure (Pip) within the pleural cavity.
Breathing Mechanisms
Both intra-alveolar and intrapleural pressures rely on specific lung properties. The ability to breathe—allowing air to enter the lungs...
5.7K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Cumulative effects of lifelong systemic excess growth hormone on postcranial skeletal morphology in adult mice.

Journal of anatomy·2026
Same author

A diminutive tyrannosaur lived alongside <i>Tyrannosaurus rex</i>.

Science (New York, N.Y.)·2025
Same author

Development of postcranial pneumaticity in the turkey (<i>Meleagris gallopavo</i>): insight from the forelimb skeleton.

Philosophical transactions of the Royal Society of London. Series B, Biological sciences·2025
Same author

Osteohistology of the unusually fast-growing theropod dinosaur Ceratosaurus.

Journal of anatomy·2025
Same author

Cretaceous Antarctic bird skull elucidates early avian ecological diversity.

Nature·2025
Same author

Global challenges and solutions to achieving and sustaining measles and rubella elimination.

Revista panamericana de salud publica = Pan American journal of public health·2024

相关实验视频

Updated: Jan 10, 2026

Establishment of a Novel Ex Vivo Lung Perfusion System for Rat Lungs After Circulatory Death
09:14

Establishment of a Novel Ex Vivo Lung Perfusion System for Rat Lungs After Circulatory Death

Published on: October 18, 2024

906

基本的鸟类肺部设计和非鸟类类恐龙的透气通风.

Patrick M O'Connor1, Leon P A M Claessens

  • 1Department of Biomedical Sciences, Ohio University College of Osteopathic Medicine, 228 Irvine Hall, Athens, Ohio 45701, USA. oconnorp@ohiou.edu

Nature
|July 15, 2005
PubMed
概括
此摘要是机器生成的。

这项研究揭示了非飞行类的热足类恐龙,包括Majungatholus,拥有类似于鸟类的气囊系统. 这表明,鸟类的呼吸系统是有机的.

更多相关视频

Two-step Approach to Explore Early- and Late-stages of Organ Formation in the Avian Model: The Thymus and Parathyroid Glands Organogenesis Paradigm
13:43

Two-step Approach to Explore Early- and Late-stages of Organ Formation in the Avian Model: The Thymus and Parathyroid Glands Organogenesis Paradigm

Published on: June 17, 2018

7.9K
A Microfluidic Model of Biomimetically Breathing Pulmonary Acinar Airways
09:39

A Microfluidic Model of Biomimetically Breathing Pulmonary Acinar Airways

Published on: May 9, 2016

8.3K

相关实验视频

Last Updated: Jan 10, 2026

Establishment of a Novel Ex Vivo Lung Perfusion System for Rat Lungs After Circulatory Death
09:14

Establishment of a Novel Ex Vivo Lung Perfusion System for Rat Lungs After Circulatory Death

Published on: October 18, 2024

906
Two-step Approach to Explore Early- and Late-stages of Organ Formation in the Avian Model: The Thymus and Parathyroid Glands Organogenesis Paradigm
13:43

Two-step Approach to Explore Early- and Late-stages of Organ Formation in the Avian Model: The Thymus and Parathyroid Glands Organogenesis Paradigm

Published on: June 17, 2018

7.9K
A Microfluidic Model of Biomimetically Breathing Pulmonary Acinar Airways
09:39

A Microfluidic Model of Biomimetically Breathing Pulmonary Acinar Airways

Published on: May 9, 2016

8.3K

科学领域:

  • 古生物学的古生物学
  • 比较解剖学的比较解剖学
  • 进化生物学 进化生物学

背景情况:

  • 鸟类表现出与其空气囊系统相关的独特骨气动性,这对有效呼吸至关重要.
  • 在已灭绝的类动物中观察到骨气动性,但其与鸟类呼吸系统进化的联系尚不清楚.
  • 鸟类的呼吸系统具有高度合规的气囊和一个准支气管肺,用于持续的空气流.

研究的目的:

  • 为了研究鸟类呼吸系统的进化起源,在非鸟类类热足动物.
  • 为了确定底足动物的骨气动性是否与鸟类风格的呼吸机制相关.
  • 为了识别基底类动物中空气囊系统的存在.

主要方法:

  • 在现存的鸟类和化石类动物中对特定区域的骨气动性进行比较分析.
  • 对Majungatholus atopus的新样本进行检查,以记录与呼吸相关的骨特征.
  • 基于化石证据的潜在气囊系统解剖学的重建.

主要成果:

  • 证据显示,在非鸟类类类热足动物中发现了宫和腹部气囊系统.
  • 发现了胸部骨结构,表明了鸟类风格吸气的先决条件.
  • 这些特征存在于Majungatholus atopus中,这是一种与鸟类有着遥远的关系的热足动物.

结论:

  • 基底性新体足可能具有基本的鸟类肺部设计 (Bauplan).
  • 穿过肺的通风可能是热足恐龙的一般特征,不仅仅是鸟类.
  • 鸟类的呼吸系统是从一个更广泛的热足动物呼吸系统进化出来的.