<unk> s are soft tissues that make up the different types of<unk> s in most animals, and give the ability of<unk> s to contract. It is also referred to as myopropulsive tissue.<unk>  is formed during embryonic development, in a process known as myogenesis.<unk>  contains special contractile proteins called actin and myosin which contract and relax to cause movement. Among many other<unk>  proteins present are two regulatory proteins, troponin and tropomyosin.<unk> s vary with function and location in the body. In mammals the three types are: skeletal or striated<unk> ; smooth<unk>  (non-striated)<unk> ; and cardiac<unk> . Skeletal<unk>  consists of elongated<unk>  cells called<unk>  fibers, and is responsible for movements of the body. Other tissues in skeletal<unk>  include tendons and perimysium. Smooth and cardiac<unk>  contract involuntarily, without conscious intervention. These<unk>  types may be activated both through the interaction of the central nervous system as well as by receiving innervation from peripheral plexus or endocrine (hormonal) activation. Striated or skeletal<unk>  only contracts voluntarily, upon the influence of the central nervous system. Reflexes are a form of non conscious activation of skeletal<unk> s, but nonetheless arise through activation of the central nervous system, albeit not engaging cortical structures until after the contraction has occurred. The different<unk>  types vary in their response to neurotransmitters and hormones such as acetylcholine, noradrenaline, adrenaline, and nitric oxide depending on<unk>  type and the exact location of the<unk> . Sub-categorization of<unk>  is also possible, depending on among other things the content of myoglobin, mitochondria, and myosin ATPase etc.
Muscle tissue
Body fluid
Soft tissue
Skin
Fluid compartments
Heart
Biomedical tissue
Human body