fibers
muscle fiber
Muscles need ATP to contract. Mitochondria produce most of the ATP in the cell, so there are lots of mitochondria in muscle.
Most of the body's glycogen is stored in the liver and muscles. The liver stores glycogen for maintaining blood glucose levels, while muscles use glycogen as a source of energy during physical activity.
the muscles are smooth muscles!
Most reptiles are carnivores ! Snakes eat mammals and rodents - Most lizards eat insects (which contain muscles - aka meat)
myofibrils
These structures do not contain smooth muscle A brain - The brain does not contain muscles!C arm musclesD leg musclesThese DO contain smooth muscle:B heartE intestines
Muscle fibres contain two myofilaments called actin and myosin
Muscles contain an oxygen storage pigment called myoglobin. Myoglobin helps muscles store and transport oxygen for energy production during exercise.
Smooth muscles contain spindle shaped cells.
Most muscles contain a mixture of different skeletal muscle fiber types, primarily slow-twitch (Type I) and fast-twitch (Type II) fibers. However, certain muscles may exhibit a predominance of one fiber type depending on their function; for instance, endurance muscles like the soleus have more slow-twitch fibers, while power-oriented muscles like the quadriceps may have a higher proportion of fast-twitch fibers. The specific composition allows muscles to perform optimally for their intended activities.
Yes, especially in muscles