Cavernous Body Dilation
Cavernous Body Dilation - Related Videos
04:07
Performing Cavernous Nerve Stimulation in Rats to Measure Intracavernous Pressure
0 Views •
2025
This video demonstrates the isolation and stimulation of the cavernous nerve in an anesthetized rat to study blood pressure changes in the cavernous body.
01:59
Cre-LoxP Mediated Induction of Cerebral Cavernous Malformations in a Mouse Model
0 Views •
2025
In this video, a genetically modified mouse pup carrying the Ccm2 gene flanked by loxP sites and Cre recombinase fused to an estrogen receptor is used to induce cerebral cavernous malformations (CCMs). The administration of 4-hydroxytamoxifen activates Cre in endothelial cells, leading to the deletion of Ccm2 and the formation of CCMs in the brain.
03:35
Contrast-Enhanced Micro-CT Imaging of Cerebral Cavernous Malformation Lesions in a Mouse Brain
0 Views •
2025
Source: Choi, J. P. et al. Induction and Micro-CT Imaging of Cerebral Cavernous Malformations in Mouse Model. J. Vis. Exp. (2017)This video demonstrates the use of micro-CT imaging to visualize cerebral cavernous malformation (CCM) lesions in a mouse brain. It details the steps for sample preparation, imaging, and 3D image reconstruction to evaluate the density and location of CCM lesions in brain tissue.
01:30
Cardiomyopathy II: Dilated Cardiomyopathy
0 Views •
2025
Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
09:05
Equilibrium and Free-body Diagrams
0 Views •
2023
Source: Ketron Mitchell-Wynne, PhD, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA Equilibrium is a special case in mechanics that is very important in everyday life. It occurs when the net force and the net torque on an object or system are both zero. This means that both the linear and angular accelerations are zero. Thus, the object is at rest, or its center of mass is moving at a constant velocity. However, this...
FAQs
Parasympathetic nerve activity promotes nitric oxide release in the erectile tissue. Nitric oxide increases cyclic guanosine monophosphate, or cGMP, which relaxes smooth muscle in arterial walls and trabeculae. This signaling sequence links neural activation to the vascular changes required for increased blood entry, making each step relevant when investigating neurovascular control of erection.
Arterial relaxation increases blood delivery to the cavernous spaces, but the response also depends on reduced outflow. As the spaces fill, the expanding tissue compresses draining veins, helping retain blood within the erectile tissue. This relationship shows that the response reflects coordinated regulation of inflow and drainage rather than an isolated change in arterial circulation.
Impairment can arise at several levels of the pathway, including autonomic nerve signaling, endothelial signaling, or smooth muscle responsiveness. A defect in any of these components may weaken the sequence from neural activity to nitric oxide and cGMP signaling, or limit the tissue’s ability to relax. Distinguishing these levels helps explain different causes of impaired erectile responses.
The process provides a direct example of neural control producing a vascular outcome. Parasympathetic activity initiates signaling, while arterial walls, trabeculae, cavernous spaces, and draining veins determine how blood enters and remains in the tissue. For neuroscience, this makes the response useful for examining how autonomic pathways influence cardiovascular function through local vascular mechanisms.
Investigating the pathway can reveal how autonomic activity, endothelial signaling, nitric oxide, cGMP, and smooth muscle behavior interact during an erectile response. It can also help separate failures in neural control from problems in vascular signaling or tissue responsiveness. The resulting framework supports analysis of erectile impairment as a disruption within a linked neurovascular system.
A study can consider the sequence from parasympathetic nerve activity through nitric oxide and cGMP signaling, smooth muscle relaxation, increased inflow, and venous compression. Comparing these stages helps identify where the response changes when autonomic pathways, endothelial signaling, or smooth muscle responsiveness are disrupted. This approach connects mechanistic analysis with broader cardiovascular and neuroscience questions.