Model Model 3: Cross Sections Through a Sarcomere
various 3 shows cross-sections of sarcomere that show the filaments at
locations within a sarcomere. a
Fig. A
Thin
Fig. B
Thick
Both
Fig. C
QUESTIONS:
11. Label the thick and thin filaments in Figs. A, B, and C above.
12. There are three sarcomeres shown in the diagram below.
Sarcomere 1
Sarcomere 2
Sarcomere 3
A
B
C
a) In Sarcomere 1, identify the location within the sarcomere of the cross section indicated
by Figure A in Model 3. Draw a vertical line and label it A (Click on Edit).
b) In Sarcomere 2, identify the location within the sarcomere of the cross section indicated
by Figure B in Model 3. Draw a vertical line and label it B.
c) In Sarcomere 3, identify the location within the sarcomere of the cross section indicated
by Figure C in Model 3. Draw a vertical line and label it C.
13. Which of the figures (A, B, or C) represents a cross section in the H zone?
Figure B
14. Which of the figures (A, B, or C) represents a cross section in the I band?
FigureA
15. Which of the figures (A, B, or C) represents a cross section in the ends of the A
band?
Figure C
