Search results
Results from the WOW.Com Content Network
Fused tetanus is when there is no relaxation of the muscle fibers between stimuli and it occurs during a high rate of stimulation. [5] A fused tetanic contraction is the strongest single-unit twitch in contraction. [6] When tetanized, the contracting tension in the muscle remains constant in a steady state. This is the maximal possible ...
Summation, which includes both spatial summation and temporal summation, is the process that determines whether or not an action potential will be generated by the combined effects of excitatory and inhibitory signals, both from multiple simultaneous inputs (spatial summation), and from repeated inputs (temporal summation).
Also, tetany can be demonstrated by tapping anterior to the ear, at the emergence of the facial nerve. A resultant twitch of the nose or lips suggests low calcium levels. This is now known as the Chvostek sign. [citation needed] EMG studies reveal single or often grouped motor unit discharges at low discharge frequency during tetany episodes.
Tetanus toxin, also known as tetanospasmin is a potent neurotoxin produced by Clostridium tetani and causes the disease state, tetanus. The LD 50 of this toxin has been measured to be approximately 1 ng/kg, making it second only to botulinum toxin D as the deadliest toxin in the world. It functions very similarly to botulinum neurotoxin by ...
Depiction of smooth muscle contraction. Muscle contraction is the activation of tension-generating sites within muscle cells. [1] [2] In physiology, muscle contraction does not necessarily mean muscle shortening because muscle tension can be produced without changes in muscle length, such as when holding something heavy in the same position. [1]
One team has already joined the NFL playoff picture in Week 16, and a few more could be on the way. Here are the clinching scenarios remaining.
Ellen DeGeneres is honoring her late friend Stephen “tWitch” Boss on the second anniversary of his death. The former television host — who recently moved to England — shared a photo of a ...
Intel stock dropped 6% on Tuesday as investors reacted to the CEO's departure. Wall Street analysts say there's more uncertainty ahead for the chip maker.