The sarcomere itself will become shorter.The sarcomere will shorten.
Sarcomere
They belong to the nervous system
sarcomere and sarcolemma are two different things. a sarcomere is between two d zisks of a myofiber (muscle fiber). a sarcolemma is a plasma membrane. there are many sections of sarcomere under the layer of sarcolemma.
The kidneys belong to the excretory system.
Veins belong to the circulatory system, because they transport blood there for they belong to the circulatory system.
The two main filaments composing the sarcomere are action and myocin.
The bones belong to the skeletal system.
The eyes belong to the Nervous system.
sarcomere
The lungs belong to the Respiratory System.
Arteries and veins belong to the cardiovascular system.