Support And Movement

Question 1

Skeletal muscles

Answer 1

Voluntary
Striations
Multiple nuclei

Question 2

Smooth muscles

Answer 2

No striations
Slow contractions
Involuntary
Walls of hollow organs and veins

Question 3

Cardiac muscle

Answer 3

Striated
Involuntary
Intercalated disks for coordinated contractions

Question 4

Muscle cells are called ___, and each of those are made from _____, and those are made of segments called ___

Answer 4

Fibers
Myofibrils
Sacromere

Question 5

Myofibrils are made from two kinds of myofilaments, Thick and thin filaments.

Answer 5

Thin filaments of Actin (grabbed onto)

Thick filaments of myosin (Grabby)

Question 6

Actin has two types of regulatory protien

Answer 6

Tropomyosin (covers myosin binding sites)

Tropinin (Can be activated to move Tropomyosin out of the way)

Question 7

Sacromeres have two lines

Answer 7

Z lines on the ends
M line in the middle

Question 8

Earth worms and Annelids use _____ two move muscles in a rhythmic pattern

Answer 8

Peristalsis