Muscle hierarchy Structure

Question 1

What are the three types of muscle tissue?

Answer 1

Skeletal muscle tissue (striated)
Cardiac muscle tissue (striated)
Smooth muscle tissue (non striated)

Question 2

Skeletal muscle is organised meaning…

Answer 2

each level of organisation is dependant on the structure below it

Question 3

Describe the hierarchy of skeletal tissue bottom to top.

Answer 3

Filament - Myofibril - muscle fiber (muscle cell) - Fasicle - Skeletal Muscle

Question 4

Myofibril is composed of thick and thin filaments arranged in a 3D way. What protein’s make up thick and thin filaments?

Answer 4

Thin filaments - Actin

Thick Filaments- Myosin

Question 5

What is a sacromere?

Answer 5

Basic unit of contractile muscle fibre

Question 6

Describe the arrangement of thick and thin filaments and the appropriate zones.

Answer 6

Z line - attachment point for thin filaments
I band - Actin filaments only
M line - attachment point for myosin filaments
H zone - myosin filaments only
A band - area of overlap for thin and thick filaments

Question 7

Describe the essential basics of Skeletal muscle?

Answer 7

Cylindrical, multinucleate, started, voluntary