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What is peristalses and what triggers it?
Peristalsis is a series of organized muscle contractions that occur throughout the digestive tract.
What causes muscle contractions in the human body?
Muscle contractions in the human body are caused by the interaction between proteins called actin and myosin within muscle cells. When a signal from the nervous system triggers the release of calcium ions, it allows these proteins to bind together and generate the force needed for muscle movement.
What are the differences between isometric, concentric, and eccentric muscle contractions?
Isometric muscle contractions happen when the muscle stays the same length, concentric contractions occur when the muscle shortens, and eccentric contractions occur when the muscle lengthens.
What is the ion called that triggers muscle contractions?
There are several, but a calcium ion is one that is used in skeletal muscle contraction.
What body tissues are involved for shivering?
Shivering is primarily controlled by the skeletal muscles, specifically the muscles that generate heat through involuntary contractions. It is regulated by the hypothalamus in the brain, which triggers muscle contractions to generate heat when the body temperature drops below a certain level.
What muscle actions would be classified as isotonic contractions?
Isotonic contractions involve muscle actions where the muscle length changes as it contracts against a constant load. There are two types: concentric contractions (shortening of the muscle during contraction) and eccentric contractions (lengthening of the muscle during contraction).
What triggers muscle contraction?
Muscle fibers generates throught the action of actin and myosin. Contraction of Voluntary muscles occurs as a result of conscious effort originating in the brain. The brain sends signals, in the form of action potentials,through the nervous system to the motor neuron that innervates the muscle fiber. Involuntary muscles like the heart or smooth muscles in the gut contracts as a result of unconscious brain activity stimuli endogenous to the muscle itself.
What process involves muscle contractions that move food through the esophagus molecules?
Different types of muscle contractions
What are the differences between tonic and phasic muscle contractions in terms of their duration and intensity?
Tonic muscle contractions are sustained and steady, while phasic muscle contractions are brief and intense. Tonic contractions last longer and have a lower intensity, while phasic contractions are shorter in duration but have a higher intensity.
What is an Isotonic Contractions?
Isotonic contractions. This happens when the muscle shortens as it contracts
What is responsible for muscle contractions?
most often uncontrollable contractions are cause by one or several of the following: CNS stimulants, reflex triggers, anxiety, stress, many pharmaceuticals (SSRI's for example), & overworking muscles without prior stretching/loosening
Does isotonic muscle contractions involve shortening of muscle?
Yes
