Part 2 Muscle Anatomy Paint-by-Number Please write your answers in the spaces pr
ID: 3475972 • Letter: P
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