A long filamentous organelle with a banded appearance is a myofibril. A myofibril is a cylindrical structure that extends along the complete length of each muscle cell.
Everything is made up of matter, which is anything that has mass and occupies space.
Rungs are made up of - [nitrogenous bases] Railings are made up of - [deoxyribose and phosphate]
An organ system is made up of a group of organs working together.
Barium is an element, and so it is made up of atoms of barium. These are made up of electrons and protons and neutrons which, in turn are made up of quarks.
Myofibrils are made up of actin (thin filaments) and myosin (thick filaments).
Bundles of myofilaments make up
Actin , myosin and others .
myofilament myofibril myofiber fascicle muscle
Myofibril
sacomeres are a single unit of a muscle fiber multiple sacomeres make up a myofibril
Myofilaments Two types: actin (thin filament) & myosin (thick filament)
Myofibril
sarcomere
myofibril
H band
A myofibril is a bundle of contractile filaments (myofilaments), 1-2 μm in diameter, that are arranged in parallel groups in the cytoplasm of striated muscle cells.