The symptoms of a stroke are different, depending on where in the brain the stroke is located, and doctors can use the symptoms to pinpoint the site of the stroke. In the case of a brain stem stroke, the patient often experiences vertigo, slurred speech, and difficulty speaking.
The smallest functional unit in a myofibril is a sarcomere. A sarcomere is composed of thin (actin) and thick (myosin) filaments. Actin slides past myosin when the muscle contracts.
Structure of Skeletal muscles The myofibril consists of protein chains called myofilaments Myofilaments have a symmetrical, alternating pattern of thick and thin elements. Skeletal Muscle Myosin Thick myofilament consists of a large number of bundled myosin molecules aligned in overlapping arrays.