Learn the ionic and electrical characteristics of each phase of an action potential. When one muscle in the pair contracts, the other expands, and this facilitates movement. If there is muscle pain, this may be a sign of infection or injury. Here you can access our many engaging and interactive 3D learning simulations, covering all the most important science topics in your course.Just select a topic below, and click play to start learning in a fun and engaging way. These include the intestinal walls pushing food forward, the uterus contracting during childbirth, and the pupils shrinking and expanding to accommodate the amount of light available. What causes muscle soreness and stiffness? Explore: Smooth muscle: Learn how your gut contracts! If a person seeks medical help for muscle weakness, the doctor will carry out a physical examination and grade the strength of the persons muscles before deciding whether additional tests are necessary. Single-unit and multi-unit smooth muscle. Discoveries in the endosarcomeric and exosarcomeric cytoskeleton. Muscles and nerve fibers allow a person to move their body and enable the internal organs to function. Thus, when the stimulus is removed, the cells do not relax right away. Remember that you can access the theory pages in your LabPad at any moment while playing the simulation. Humans and other vertebrates have three types of muscle: skeletal, smooth, and cardiac. the lower esophageal sphincter opens. Learn how cells, organs and systems function in the human body. You will be able to use different reagents that resemble the control of the nervous system as well as other drugs that modify the smooth muscle contraction. Rather, actin and myosin are constantly binding. Click below to read more. Inheritance with Pedigrees - Labster This type of exercise requires the body to use the muscles at well below their maximum strength capacity. Pick up the cellular 3D models and examine the nuclei, myofibrils, mitochondria and more to understand how the intracellular components enable each muscle cell to perform the functions characteristic for that muscle tissue.
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