The ventral thecal sac refers to the ventral, or front side of the thecal sac, which is a membrane that surrounds the spinal cord and some cerebrospinal fluid. A diagnosis of spinal injury and disease takes the appearance of the thecal sac into consideration.Know More
The thecal sac consists of dura mater, which is a thick membrane that surrounds and protects the brain. This membrane is the outermost of the three membranes that surround the brain, and it also encompasses the arachnoid mater and pia mater.
Ventral thecal sac indentation refers to parts of the vertebrae or spinal discs pressing on the front side of the thecal sac, causing indentations. Indentations into the thecal sac can result in pain or weakness as they pinch the nerves in the spinal cord.
Disc fragmentation in the spine can also affect the thecal sac. Although it is not common, if a disc ruptures, fragments may rupture the thecal sac.
Compression of nerve roots resulting in back pain can often be detected by looking at the thecal sac. The size of the thecal sac can help in determining the amount of cerebrospinal fluid. If there is not enough fluid inside, then the spinal cord is not properly protected by the thecal sac and is pinched.Learn more about Human Anatomy
Reflexes work because sensory neurons bring sensory info almost directly to motor neurons in a specific area of the spinal cord. Because of this, the body can react to certain stimuli even before the brain registers what is happening.Full Answer >
The opposite of ventral is dorsal. In anatomical terms, ventral means "towards the bottom side or towards the belly" of a living creature. Dorsal is the opposite of this and means "toward the top side or towards the back" of a living creature.Full Answer >
An earthworm's ventral nerve cord carries signals from the brain to the body and allows for the coordination of the ganglia in each segment past the fourth. Ganglia are clusters of nerve cells, and an earthworm's brain is an organ made from the fused ganglia of the first three segments.Full Answer >
Recovery after a ventral hernia surgery takes at least six weeks in most cases and proceeds in stages from the initial after effects of the surgical incision to avoiding re-injury until the hernia is fully healed, according to University Hospitals. This includes between five and seven days inpatient care.Full Answer >