Upon contraction, the smallest motor unit, that is, the one associated with the fewest muscle fibers, is the normally the first activated. As the contraction progresses, larger motor units are brought into play.Efficient muscle contraction depends on the motor units within a muscle working effectively together.pon contraction, the smallest motor unit, that is, the one associated with the fewest muscle fibers, is the normally the first activated. As the contraction progresses, larger motor units are brought into play.
Trojan programs are most dangerous because they can create a back door. into your computer that gives malicious hackers direct access to your. system. Once installed, Trojans can hijack your PC and upload usernames, passwords, credit card numbers, social security numbers, and bank account.
Â© Cengage Learning 2015 Summary â¢ A logic bomb is computer code that is typically added to a legitimate program but lies dormant until triggered by a specific logical event â¢ A backdoor gives access to a computer, program, or service that circumvents any normal security protections â¢ One of the most popular payloads of malware today carried out by Trojans, worms, and viruses is software that will allow the infected computer to be placed under the remote control of an attacker ...