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Related Concept Videos

Osmoregulation in Insects01:47

Osmoregulation in Insects

Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.
Mechanism of Breathing II: Expiration01:23

Mechanism of Breathing II: Expiration

The Physiology of Expiration: A Seamless Respiratory Process
Expiration, or exhaling, is a complex physiological process that begins as the inspiratory muscles begin to relax. This relaxation triggers a series of events that epitomize the efficiency of the respiratory system.
Mechanism of Expiration:
Mechanism of Breathing I: Inspiration01:30

Mechanism of Breathing I: Inspiration

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,...
Mechanism of Breathing III: The Accessory Muscles01:21

Mechanism of Breathing III: The Accessory Muscles

The Role of Accessory Muscles in the Respiratory System
The respiratory system is a complex network that relies on primary respiratory muscles like the diaphragm, but also involves accessory muscles to enhance lung expansion and airflow during both inhalation and exhalation.
Enhancing Inhalation with Accessory Muscles:
Accessory muscles such as the sternocleidomastoid, scalene, intercostal, and abdominal muscles are crucial when additional respiratory effort is required, such as during deep...
The Respiratory System01:16

The Respiratory System

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.
Breathing01:05

Breathing

The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...

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Related Experiment Video

Updated: May 15, 2026

Multi-unit Recording Methods to Characterize Neural Activity in the Locust (Schistocerca Americana) Olfactory Circuits
12:13

Multi-unit Recording Methods to Characterize Neural Activity in the Locust (Schistocerca Americana) Olfactory Circuits

Published on: January 25, 2013

How locusts breathe.

Jon F Harrison1, James S Waters, Arianne J Cease

  • 1Arizona State University, School of Life Sciences Tempe, Arizona, USA. j.harrison@asu.edu

Physiology (Bethesda, Md.)
|January 3, 2013
PubMed
Summary
This summary is machine-generated.

Insect respiratory systems offer efficient airflow control, serving as models for bioengineers designing microfluidic systems. Their unique anatomy enables compartmentalization and regional flow, optimizing gas exchange with minimal energy.

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Area of Science:

  • Insect physiology
  • Bioengineering
  • Fluid dynamics

Background:

  • Insect tracheal systems demonstrate high airflow capacity and dynamic range.
  • These systems operate with remarkable energy efficiency.
  • They are potential models for bioengineering applications, particularly microfluidics.

Purpose of the Study:

  • To explore the functional anatomy of insect cardiorespiratory systems.
  • To understand the role of valves in compartmentalization and regional flow control.
  • To analyze the dominant transport mechanisms and fluid dynamics within insect tracheae.

Main Methods:

  • Analysis of recent advances in insect cardiorespiratory system research.
  • Examination of system anatomy and functional valves.
  • Application of fluid dynamics principles, including Reynolds number calculations.

Main Results:

  • Insect cardiorespiratory systems possess functional valves enabling compartmentalization.
  • Segment-specific pressures and flows are facilitated by system anatomy.
  • Convection is the primary transport mechanism in major tracheae, with significant viscous effects.

Conclusions:

  • Insect tracheal systems provide valuable insights for microfluidic system design.
  • The compartmentalized nature and regional flow control are key features for efficient respiration.
  • Understanding these biological systems can inspire novel bioengineered solutions.