Myelin sheaths, which cover the axon of the nerve cells in the brain and spinal
cord, prevents the electric current from dissipating from the axon.
Destroying the <span>myelin sheaths impairs the
conduction of signals on the affected nerves, causing damage in
every function that the nerve is involved, in this case will affect movements and vision.</span>
Answer:
P wave
Explanation:
Electrocardiogram records the strength and timing of electrical activity in heart. As various regions of heart contract at different times and for different duration, the electrical activity is not constant and shows a series of rise and fall. There are three main components of ECG: P wave, QRS complex and T wave.
P wave indicates the beginning of electrical signal in the right atrium. The signal spreads in both right and left atria which leads to their contraction. As a result, blood is pumped into the ventricles and rest of the process occurs.
Americium, the atomic number is 93
Explanation:
Oxgyen Is more important coz germination needs water and Oxgyen to take place.
The correct option is this: EXTENSIBILITY SINCE THE MUSCLES OF THE LEG LENGTHEN AND STRETCH.
The human muscles have four basic properties, which are: contractility, extensibility, elasticity and excitability. Contractility refers to the ability of the muscle to contract. Excitability refers to the muscle ability to generate action potential when stimulated. Elasticity describes the capacity of muscles to go back to its original shape after been extend and extensibility refers to the ability of the muscle to stretch.