Part 2 Muscle Anatomy Paint-by-Number Please write your answers in the spaces pr

Question

Part 2 Muscle Anatomy Paint-by-Number Please write your answers in the spaces provided. Due Monday, October 2nd at the BEGINNING of lecture. Your skeletal muscles are remarkable pieces of machinery. Part of what makes them so good at their job is the beautiful way in which molecular machinery at the cellular level is iterated at higher and higher levels of organization. Your task for this assignment is to identify the key pieces of machinery at each level of musele organization. Where you see an asterisk, you should define what role that piece of machinery plays in muscle contraction (can be done on the back of this page). 3* 4" 7 6 10* 12 13 14 15 16 19 22* 17 18 20 21 23

Explanation / Answer

Picture 1 :Mysiums

1 tendons

2: epimysium

3 blood vessels and nerves

4 perimysium

5 endomysium

Picture 2 : the labelling in the diagram is too unclear , So i'm explaining the overall structure of muscle cell here

sacrolemma is the membrane

sacroplasm is the matrix

sacroplasmic reticulums

transverse tubules : aids in conducting stimulus to the cell

terminal cistarnae

triads

3 thick filament

4 thin filament

5 myofibril :  

6 sacrolema :

7 sacroplasm

8 nucleus

Picture 3:

9 M line connects filaments with myomesin proteins

10 A band and I band : A band arises from proteins capability to polatixe light , I band arises for exact opposiye reason

11 Myofibril

Picture 4

12 Z - line this filaments are connected to each other in zigzag structure

13 thin filament

14 thick filament

15 structure of thick filMENT

PICTURE 5

16 STRUCTURE OF THICK FILAMENT

picture 6

17 myosin molecule : very imoprtant muscle protein

18 hinge connector joins head and tail

19 free head freely moves and binds, contains ATPase that splits ATP

20 tail

picture 7

21 nebulin

22 active site : bindsmyosin heads for G contraction

23 troponin

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