0
What else can I help you with?
How many sarcomere in a muscle cell?
There are unknown amounts of fibers (fibre) in muscles
What is a single muscle called?
a muscle fiber
What are all muscle cells called?
A single muscle cell is called a muscle fiber.
What is a contractile response of a single muscle fiber to a single muscle impulse called?
The contractile response of a single muscle fiber to a single muscle impulse is called a "twitch." A twitch consists of a brief contraction followed by relaxation, and it can be divided into three phases: the latent period, contraction phase, and relaxation phase. The characteristics of a twitch, such as its duration and force, can vary depending on the type of muscle fiber involved.
What repeating units make up a muscle fiber?
sacomeres are a single unit of a muscle fiber multiple sacomeres make up a myofibril
What is the term for the rapid rise and fall in force produced by a muscle fiber after a single action potential?
A twitch is the rapid rise and fall in force produced by a muscle fiber after a single action potential.
What is the percentage of muscle tissue?
A single muscle fiber may contain 15 billion thick filaments.
Each skeletal muscle fiber is controlled by a motor neuron at a single?
neuromuscular junction
How many nuclei in each cardiac muscle fiber?
There is typically only one nucleus in each cardiac muscle fiber. Cardiac muscle cells are uninucleated, meaning they contain a single nucleus. This nucleus plays a vital role in controlling protein synthesis and cell function within the muscle fiber.
Does each skeletal muscle fiber has one neuromuscular junction?
Yes, each skeletal muscle fiber has one neuromuscular junction (NMJ) where a motor neuron connects to the muscle fiber. This junction is the site where the motor neuron releases neurotransmitters, specifically acetylcholine, to stimulate muscle contraction. While a single motor neuron can innervate multiple muscle fibers, each individual muscle fiber receives input from only one motor neuron at its NMJ.
What is a muscle striation made of?
The striations seen in skeletal muscle fibers are the result of the alignment of hundreds of myofibrils within each muscle fiber. A myofibril is a cylindrical organelle as long as the muscle fiber. Myofibrils contain bundles of myofilaments, which are actin proteins and myosin proteins. The differences in the thicknesses of the myofilaments accounts for the banding pattern of light and dark striations.
The smallest functional unit of the muscle fiber?
The smallest functional unit of a muscle fiber is the sarcomere. Sarcomeres are composed of actin and myosin filaments arranged in a repeating pattern, allowing for muscle contraction and relaxation to occur. They are responsible for the striated appearance of skeletal muscle under a microscope.
