Related Experiment Video
Updated: Oct 22, 2025

Ex Vivo Pressurized Hippocampal Capillary-Parenchymal Arteriole Preparation for Functional Study
Published on: December 18, 2019
Not just a 'drain': venules sprout brain capillaries
Christina N Como1, Hannah E Jones2, Julie A Siegenthaler3
1Department of Pediatrics, Section of Developmental Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Neuroscience Graduate Program, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
Researchers visualized cerebral cortex vasculature development in mice using advanced microscopy. This study reveals how the brain
Area of Science:
- Neuroscience
- Developmental Biology
- Vascular Biology
Background:
- The cerebral cortex needs a dense vasculature for continuous oxygen supply to active neurons.
- Understanding vascular network formation is crucial for brain development and function.
Purpose of the Study:
- To investigate the dynamic process of cerebral cortex vasculature construction.
- To identify the mechanisms underlying the precise organization of brain blood vessels during early development.
Main Methods:
- In vivo two-photon microscopy was employed to observe vascular development in live mouse models.
- High-resolution imaging captured the formation of the vascular network during a specific postnatal developmental window.
Main Results:
- The study revealed the intricate process of how the cerebral cortex vasculature is precisely organized.
- Coelho-Santos et al. demonstrated the dynamic assembly of this essential network during a critical developmental period.
Conclusions:
- The findings provide novel insights into the developmental mechanisms of brain vasculature.
- This research contributes to understanding how the brain ensures adequate oxygen supply to neuronal circuits.
Related Concept Videos
Venules
Venules are much smaller in diameter compared to their larger counterparts, the veins. They are generally 8 to 100 micrometers in diameter, significantly smaller than the size of veins. The walls of venules are thin, consisting of the endothelium, a thin layer of connective tissue, and occasionally a few smooth muscle cells. This structural simplicity is a stark contrast...
Capillaries and Their Types
Capillary Beds
Capillaries connect arterioles, small branches of arteries, to venules,...
Veins of Head and Neck
On the other hand, the vertebral veins, unlike their arterial counterparts, are not primarily responsible for brain drainage. Instead, they drain the cervical vertebrae, spinal cord, and some small...
Development of Blood Vessels
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
The Blood-brain Barrier

