The Z disk (or Z line) defines the boundaries of a muscle sarcomere. Two adjacent Z disks along the myofibril mark the boundaries of a single sarcomere. The Z disks are the attachment sites for the thin filaments. Therefore, from each Z disk, thin filaments extend to two neighboring sarcomeres.
They run through the core of each thick filament and anchor it to the Z-line, the end point of a sarcomere. Titin also stabilizes the thick filament, while centering it between the thin filaments.
In general, negative selection eliminates from the population very harmful changes to proteins that kill or stop reproduction. ... The authors also found a correlation between genes predicted to be under negative selection and genes implicated in certain hereditary diseases
Spinal cord injuries are responsible for people not being able to move their bodies below a certain point. What determines how much of the body they can still move is the level of the spinal cord injury.
Explanation:
The central nervous system cannot communicate with the brain due to the spinal cord injury.
A solution is isotonic to a cell if it has the same Concentration of dissolved particles as the cell. Water molecules move in and out of the cell at equal rate, so the cell size remains the same.
Think of superior as above, so since it is above it will be the end towards the head. Inferior is below so it will be closer to your feet since anatomical position is standing.
