GMS 6474 Final Exam 2024 Questions and Answers (GRADED A+)

GMS 6474 Final Exam 2024 Questions and Answers (GRADED A+) what does the SR store - ANSWER-proteins and calcium what is the role of the transverse tubules in the muscle fiber - ANSWER-allow inside of muscle to communicate with the outside of the muscle how is a sarcomere measured - ANSWER-from z-disc to z-disc what is contained in the I band of the sarcomere & what color is the band - ANSWER-thin filaments titin z-disc light (isotropic) what is contained in the A band of the sarcomere & what color is the band - ANSWER-thick filaments thin filaments dark (scatters light) what is contained in the H zone & what color is the band - ANSWERthick filaments light no barbs or myosin middle zone of the sarcomere what is contained in the M line - ANSWER-in the middle of the sarcomere, middle of H zone thick filaments myomesin what does titin do in the sarcomere - ANSWER-structural protein how many zones can you see when the sarcomere is relaxed - ANSWER-all zones can be seen in relaxed state how many zones can be seen when the sarcomere is contracted - ANSWER-sarcomere shortens I band shortens H zone disappears thick and thin filaments overlap DONT short