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In the histology of skeletal muscle, a triad is the structure formed by a T tubule with a sarcoplasmic reticulum (SR) known as the terminal cisterna on either side. [1] Each skeletal muscle fiber has many thousands of triads, visible in muscle fibers that have been sectioned longitudinally. (This property holds because T tubules run ...
Primal Pictures is a business established in 1991 that provides 3D graphic renderings of human anatomy, built using real scan data from the Visible Human Project, for use by healthcare students, educators, and medical professionals. It operates the Anatomy.tv online platform. [1]
Human anatomy is the study of the shape and form of the human body. The human body has four limbs (two arms and two legs), a head and a neck , which connect to the torso . The body's shape is determined by a strong skeleton made of bone and cartilage , surrounded by fat ( adipose tissue ), muscle, connective tissue , organs, and other structures.
The Institute gained a substantial online following starting in November 2019, when they uploaded their first video to TikTok. [3] A 2019 video, with 1.6 million likes, clarified the location of the human stomach, while a 2021 video illustrating the bodily changes caused by pregnancy accumulated over 8 million views. [4]
Here is a list of examples in which unrelated proteins have similar functions with different structure. The convergent orientation of the catalytic triad in the active site of serine and cysteine proteases independently in over 20 enzyme superfamilies. [254] The use of an N-terminal threonine for proteolysis.
An early stem-primate, Plesiadapis, still had claws and eyes on the side of the head, making it faster on the ground than in the trees, but it began to spend long times on lower branches, feeding on fruits and leaves. The Plesiadapiformes very likely contain the ancestor species of all primates. [24]
Her theory about human behavior, and the problems we create with that behavior, distinguishes the prefrontal cortex as uniquely different from the rest of the neocortex. The prefrontal cortex, with its agenda of integration, is the part of the brain that can get the other parts to work together for the good of the individual.
The classic triad of diagnostic signs consists of neck stiffness, sudden high fever, and altered mental status; however, all three features are present in only 44–46% of bacterial meningitis cases. [ 16 ] [ 17 ] If none of the three signs are present, acute meningitis is extremely unlikely. [ 17 ]