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What do you call the stripes across a skeletal muscle cell?
The stripes across a skeletal muscle cell are called myofibrils, which are made up of repeating units called sarcomeres. Sarcomeres are responsible for muscle contraction and are composed of thick and thin filaments that give the muscle its striped appearance.
What takes up most of a muscles cell volume and is the contractile component of a muscle cell?
The component that takes up most of a muscle cell's volume and is responsible for contraction is the myofibrils. These structures are composed of repeating units called sarcomeres, which contain the contractile proteins actin and myosin. When stimulated by a nerve impulse, these proteins interact to produce muscle contraction. Thus, myofibrils are essential for the muscle's ability to generate force and movement.
What is the specific relationship of the functional unit of contraction to the striated appearance of a skeletal muscle fiber?
The organization of contractile proteins into a regular end-to-end repeating pattern of sacromeres along the length of each cell accounts for the striated, or striped, appearance of skeletal muscle in longitudinal section.
What structure is part of a muscle cells membrane that delivers signals to sarcomere?
The transverse (T) tubules are structures in a muscle cell's membrane that deliver signals from the cell surface to the sarcomeres, which are the contractile units of the muscle cell. These T-tubules help coordinate muscle contraction by allowing the signal for muscle contraction to penetrate deeply into the cell.
Long filamentous organelle with a banded appearance?
This description matches a structure called a myofibril, which is found in muscle cells. Myofibrils are made up of repeating units called sarcomeres that give them a banded appearance. They are responsible for muscle contractions by interacting with motor proteins.
What is the correct order of structures as you move from outside a muscle cell to deep inside it?
The correct order is: epimysium (outer connective tissue layer), perimysium (connective tissue surrounding muscle fascicles), endomysium (connective tissue surrounding individual muscle fibers), sarcolemma (muscle cell membrane), sarcoplasm (muscle cell cytoplasm), myofibrils (contractile units within muscle fibers).
What is the repeating group of a crystal called?
The repeating group of atoms in a crystal is called a unit cell. This unit cell is the smallest repeating structure that can be used to build up the entire crystal lattice.
What is the function of a heart muscle cell?
the branching pattern increases the strenght of the muscle allowing it to pump blood to all cells in the body
What is a muscle cell?
A muscle cell is a cell which can change length
Is muscle a gamete cell?
No a muscle cell is a somatic cell
What is a three-dimensional structure that represents the alternating pattern of particles in a crystal?
A unit cell is a three-dimensional structure that represents the repeating pattern of particles in a crystal lattice. It is the smallest repeating unit that can be used to build up the entire crystal structure.
What cell have more mitochondria a muscle cell or egg cell?
muscle
