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.
MCV is an abbreviation standing for the mean corpuscular volume. It refers to the average volume of red blood cells in a being. MCV is affected either by increasing or decreasing due to the average size of a red blood cell. Take for instance, low MCV shows small red blood cell size, normal MCV shows normal red blood cell size and high MCV shows large red blood cell size. Sponsored link.