Answer:
The correct answer will be option A - A-band.
Explanation:
The sarcomere is the repeating unit of a myofibril which extends between two z-lines. Under a microscope, a sarcomere can be divided into A- band which is composed of thick myosin only and I-band which consists of thin filament that is actin only.
When a muscle contract then actin and myosin comes in overlapping position due to which I-band shortens and between two z-lines and overlapped structure of thin actin filaments over thick myosin filaments (A-band) is seen.
Therefore, only A-band is seen between two z-lines in a contracted muscle thus, option A is the correct answer.
The answer is AmED
AMED is a specialized bibliographic database designed for physicians, therapists, medical researchers, historians and clinicians looking to learn more about alternative and allied therapies and related subjects.
AMED provides a renowned collection of scientific, technical and medical (STM) information. The scope of coverage includes a range of International titles, including French, German, Turkish and Scandinavian material, some of which are unique to AMED. AMED is updated with new content monthly.
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Answer:
Secondhand smoke is the combination of smoke from the burning end of a cigarette and the smoke breathed out by smokers. Secondhand smoke contains more than 7,000 chemicals. Hundreds are toxic and about 70 can cause cancer.
Explanation:
It is harmful too
Answer:
Whiplash occurs when the muscles in your neck suffer a severe strain sue to the abrupt and extreme movement of your head moving backward and then forward. This motion can cause your neck's muscles and tendons to stretch unnaturally, and even tear. Symptoms would include neck swelling, and spasms in the trapezius muscles, cervical spine, and anterior cervical spine.
Explanation:
