Flashcards in Lecture 03: Structural And Contactility Deck (7)
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1
Q
What are the 3 types of SR
A
Corbular
Junctional
Network
2
Q
What is the size of a human cardiac monocyte? Diameter?
A
10-20 um
50-100 um
3
Q
What is the differences between G-actin and F-actin?
A
G-actin is globular and sticks to form F-actin, which look like long strands of pearls
4
Q
What are they complexes attached to toponin?
A
Troponin C, which binds Ca++
Troponin I, which is inhibitory
Troponin T, which binds to tropomyosin
5
Q
What are thick filamanets called?
Thin Filaments?
A
Myosin
Acvtin
6
Q
When does contraction occur?
A
Every cycle of cross-bridge formation/detachment which break down 1 ATP
7
Q
What causes Rigor Mortis?
A
lack of ATP that attach myosin heads to actin