The answer would be testicular torsion.
The diagnosis for pain in the scrotum in a male patient would be either epididymitis or testicular torsion. Cremaster muscle will lift the testis and lessen the pain in case of testicular torsion. E<span>xtensive cremaster muscle contraction observed makes testicular torsion is more likely in this patient.</span>
Answer:
A. The I bands and H bands get smaller and the A bands remain the same size.
Explanation:
The dark-colored central region of the sarcomere that extends the entire length of the thick filaments makes the A band. It also includes the part of the thin filaments that overlap the thick filaments. The lighter region of the sarcomere consisting of the rest of the thin filament but no thick filament makes the I band. The H zone is the narrow region present in the center of each A band and consists only of thick filaments.
During muscle contraction, myosin heads pull the thin filaments towards the M line. This makes the thin filaments to slide inward to allow their ends to overlap and meet at the center of the sarcomere. This makes the I band and H zone narrower. The I band and H zone are disappeared during maximum muscle contraction. Sliding of thin filaments does not change the width of A band which remains unchanged.
He couldn't explain how they moved
Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded. The entire infectious virus particle, called a virion, consists of the nucleic acid and an outer shell of protein.
