Muscle Tissue (Histo) 11-9-16

Question 1

Type I skeletal muscle has …. fibers

Answer 1

slow, red oxidative

Question 2

Type IIA skeletal muscle has…. fibers

Answer 2

fast, intermediate oxidative-glycolytic

Question 3

Type IIB has…. fibers

Answer 3

fast, white glycolytic

Question 4

The H band is in the center of the …. and … line bisects it. Is there thick or thin filament here?

Answer 4

• sarcomere
• M line
• Only thick filaments here

Question 5

A sarcomere is 1/2 of… band, …band and then 1/2 of…band

Answer 5

1/2 of I band, A band, 1/2 of I band

Question 6

A triad is composed of…

Answer 6

T tubule and 2 terminal cisternae

Question 7

Tropomyosin blocks…

Answer 7

myosin binding site on actin

Question 8

… muscle has a simple SER; small terminal cistern; forms diads with T tubules

Answer 8

Cardiac

Question 9

…muscle has more complex SER; larger terminal cistern; forms triads with T tubules

Answer 9

Skeletal

Question 10

Mitochondria makes up 2% of cell volume in …muscle

Answer 10

Skeletal

Question 11

Mitochondria makes up 25-40% of cell volume in … muscle

Answer 11

Cardiac

Question 12

In…. muscle, cells are short, fat, branches and contain typically 1 nucleus located in center of the cell; acts as functional syncytium

Answer 12

Cardiac

Question 13

In … muscle, cells are independent (both structurally and functionally) and are long, cylindrical, and multinucleate; multinucleate syncytium

Answer 13

Skeletal

Question 14

A…. is the motor(efferent) neuron and all the muscle fibers it innervates

Answer 14

motor unit

Question 15

A…. is a chemical synapse between a motor (efferent) neuron and a skeletal muscle fiber cell

Answer 15

neuromuscular junction