Lesson Summary. Nervous tissue is composed of three main parts: nerves, the spinal cord and the brain. The primary function of nervous tissue is to receive stimuli and send the impulse to the spinal cord and brain. The brain sends back a response to the muscles via the nerves.ervous tissue is composed of three main parts: nerves, the spinal cord and the brain. The primary function of nervous tissue is to receive stimuli and send the impulse to the spinal cord and brain.
What Does a Low MPV Mean? MPV is the abbreviated form of Mean Platelet Volume. It is a reading which represents the size of the platelets in a blood sample and is determined by a machine. CBC or Complete Blood Profile is the test in which the calculation of this reading is usually included.
Confidence votes 460. Mean platelet volume is the size of the platelets. The higher the MPV the larger the platelet size and the lower the MPV the smaller the platelets. High MPV can cause a person to be at a higher risk for strokes and heart attacks.Low MPV can cause a person to be at risk for bleeding problems (too much bleeding that is slow to stop).ean platelet volume is the size of the platelets. The higher the MPV the larger the platelet size and the lower the MPV the smaller the platelets.