Answer:
The Z lines and H- zone shortens during the muscle contraction.
Explanation:
Sarcomere is the area between the two Z lines. The Z- lines are present in the centre of I - band and H - zone is present in the A - band. The actin filaments which are thin filaments present in I- band and contracts, slide over the myosin filament during contraction.
The I - band, H- zones are became shortens as they are thin than the A- band. It is anisotropic band having thick myosin filaments. They are not flexible and remain in its constant shape during the muscle contraction.
After the muscle contraction, the A- band and the H- zone comes to their original shape. In other words, the sarcomere shortens and comes back during muscle contraction, and relaxation.
Answer:
B.fiber cells
Explanation:
cilia are lil eyelash kind of bit on cells. fiber cells have them.
Answer:
a layer or a series of layers of rock in the ground. ,
a level or class to which people are assigned according to their social status, education, or income.
Explanation:
Plants and fungi both have cell walls, which provide them with support and structure. But one main difference is that plants, unlike fungi, have the ability to photosynthesize.
Answer:
Oxygen, air, oxygen from the air, oxygen from air and the second part is synthesis
Explanation:
Got it on edge
