Related Experiment Video
Updated: Apr 20, 2026

Implantation of Combined Telemetric ECG and Blood Pressure Transmitters to Determine Spontaneous Baroreflex Sensitivity in Conscious Mice
Published on: February 14, 2021
[The somato-sympathetic and somato-somatic reflexes in the spontaneous hypertensive rats]
Abstract:
In anaesthetized normotensive (Wistar) and hypertensive (SHR) rats, sympathetic and somatic reflexes were studied before and after cervical spinal cord transection. Single shock stimulation of a peripheral afferent nerve of brachial plexus produced reflex discharges in the cervical sympathetic trunk and the radial nerve. In rats with intact brain stem, evoked response in the cervical sympathetic trunk was composed of three components, but evoked response in radial nerve consisted of two components. The total somato-sympathetic reflex in hypertensive rats was more on 54 % than the somato-sympathetic reflex in normotensive rats. The total somato-somatic reflex in hypertensive rats was more on 70 % than the somato-somatic reflex in normotensive rats. In rats with transected brain stem, evoked response in the cervical sympathetic trunk was composed of two components, but evoked response in radial nerve consisted of one component. After neuraxis transection the total sympathetic and somatic reflexes in normotensive rats decreased by 85 and 83 %, respectively. The total sympathetic and somatic reflexes in hypertensive rats decreased by 88 and 84 %, respectively. However, the peak value of evoked discharges in sympathetic and somatic nerves were more in hypertensive rats than in normotensive rats. Suprasegmental and spinal mechanisms responsible for the augmentation of both sympathetic and somatic reflexes are discussed.
More Related Videos
06:30Quantifying Acute Changes in Renal Sympathetic Nerve Activity in Response to Central Nervous System Manipulations in Anesthetized Rats
Published on: September 11, 2018
11:08Novel Approach for Simultaneous Recording of Renal Sympathetic Nerve Activity and Blood Pressure with Intravenous Infusion in Conscious, Unrestrained Mice.
Published on: February 14, 2018
Related Concept Videos
Somatic Spinal Reflexes
One of the most well-known somatic spinal reflexes is the stretch reflex, which is activated by the sudden stretching of a muscle. This reflex involves the activation of specialized sensory receptors called muscle spindles, which are located in the muscle tissue and detect changes in the length and speed of muscle contractions. When a muscle is suddenly...
Neural Regulation of Blood Pressure
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...
Disorders of the Autonomic Nervous System
Raynaud's disease, also known as Raynaud's...
Hypertension and Regulation of Blood Pressure
Hypertension II: Pathophysiology
The Sympathetic Nervous System