Stress relief treatment

Friday, April 15, 2016

Aside from working out and spending time in quiet places in contact with nature, floating naked in a bath full of Epsom salt is a good therapy for stress relief.

Stellate Ganglion

Wednesday, April 6, 2016

The stellate ganglion is a sympathetic nerve ganglion located in the base of the neck, right behind the vertebral artery. Being part of the sympathetic ganglionic chain, it originates through the merging of the inferior cervical ganglion and the first thoracic ganglion, which are joined together by the loop of Vieussens. Although it is usually present in most individuals, others do not have this ganglion.

From the stellate ganglion comes off the inferior cardiac nerve, which is a sympathetic nerve that works as a heart rate accelerator, being part of the cardiac plexus.

Blue Origin Reusable Rocket Makes Vertical Landing

Monday, April 4, 2016

The Blue Origin's reusable rocket made its third successful vertical landing. This rocket uses a BE-3 liquid-pump-fed engine. Compared to the Atlas and Saturn's expendable boosters, the new rocket of Blue Origin is reusable and will make flying into space and putting satellite in orbit much less expensive.

Thermite Welding To Join Rails

Tuesday, March 15, 2016

The use of thermite welding to join track rails in the railroad industry (video). The rail ends must be pre-heated first before the welding process.

Mesenteric ganglion

Friday, March 11, 2016

The mesenteric ganglia are two groups of nerve cells that belong to the chain of prevertebral ganglia of the sympathetic nervous system, innervating the gastrointestinal organs. The human being has two mesenteric ganglia:

1) The superior mesenteric ganglion, which is located on the anterior surface of the abdominal aorta, at the point of origin of the superior mesenteric artery; its nerve fibers runs along this blood vessel and  innervates the small intestine.

2) The inferior mesenteric ganglion is also found on the anterior side of the abdominal aorta but adjacent to the point where the inferior mesenteric artery arises. It supplies and innervates the large intestine and the bladder.

Sympathetic Cardiac Nerves (Origin)

Friday, March 4, 2016

The sympathetic cardiac nerves supply the heart with sympathetic fibers. It means that these nerves increase the heart rate, accelerating the ventricular contraction. There three pairs: 1) the superior cardiac nerve, which arises from the superior cervical ganglion; 2) the middle cardiac nerve, which originates from the middle cervical ganglion; 3) the inferior cardiac nerve, which extends from the stellate ganglion. They are postganglionic, non-myelinated fibers that are distributed in the heart, making up, along with the parasympathetic vagal fibers, the cardiac plexus.


The sympathetic cardiac nerves originate from the neurons located in the lateral horns of the spinal cord grey matter, known as tratus intermedium lateralis, from T1 to T5. The axons of these nerve cells come out of the spinal cord, following the anterior motor roots of the first four thoracic pairs.

There is also a thin sympathetic bundle of cardiac accelerator fibers that arises from the medulla oblongata. This runs along parallel to the vagal nerve.

NASA Curiosity Mars Rover (Video)

Tuesday, February 9, 2016

On February 8, NASA released its latest video of planet Mars, with 360ยบ images, shot from Curiosity rover camera.

To read more about Mars, click on the link below