Skeletal Muscle Tissue

Question 1

What are the main components of Skeletal Muscle?

Answer 1

1. Skeletal Muscle
2. Connective Tissue
3. Nerves
4. Blood Vessels

Question 2

what are the functions of Skeletal Muscles?

Answer 2

• Produce Body Movements through contractions that pull on tendons
  -Maintains posture and body positions because of tension on skeletal muscles
• Supports soft tissue by supporting the weight of visceral organs
  -Guard body entrances and exits
  -Maintains body temp via contractions
• Stores nutrients

Question 3

At the ends of a skeletal muscle, collagen fibers of connective tissue layers will merge to form what?

Answer 3

Tendons or aponeurosis

Question 4

What is a tendon?

Answer 4

Attaches muscle to a specific point of bone

Question 5

An aponeurosis functions to provide what?

Answer 5

An attachment over a broad area that may involve more than one bone

Question 6

Cells that function in the repair of damaged muscle tissue

Answer 6

Myosatellite Cells

Question 7

What is the function of the epimysium?

Answer 7

Separates the muscle from surrounding tissues and organs

Question 8

The word for a bundle of muscle fibers?

Answer 8

Muscle Fascicle

Question 9

What are the 3 levels that a skeletal musclel can be broken down into:

Answer 9

1. Skeletal Muscle
2. Muscle Fascicle
3. Skeletal Muscle Fibers

Question 10

Describe the process of Skeletal Muscle Development:

Answer 10

1. Muscle Fibers will develop through the fusion of myoblast
2. Myoblast will fuse together to form large multinucleate cells and some myoblast will remain as myosatellite cells
3. The multinucleate cells begin to enlarge and differentiate into skeletal muscle fibers. They will begin to produce proteins involved in muscle contractions

Question 11

What are the names of the plasma membrane and the cytoplasm of a skeletal muscle?

Answer 11

The plasma membrane is called the sarcolemma
The cytoplasm is called the sarcoplasm`

Question 12

What is the structure that is responsible for the light and dark bands seen on skeletal muscles?

Answer 12

Myofibril

Question 13

What are the 2 classifications of myofilaments?

Answer 13

1. Thin Filaments
   . Thick Filaments

Question 14

Thin filaments are primarily composed of____, while thick filaments are primarily composed of ____

Answer 14

Thin: actin
Thick: myosin

Question 15

What is a sacromere?

Answer 15

The contractilel unit of a striated muscle cell

Question 16

How does a muscle contraction begin?

Answer 16

A muscle contraction will begin when stored calcium ions are released into cytosol through gated calcium channels

Question 17

The regulatory protein responsible for elasticity of skeletal muscles is _________.

Answer 17

Titin

Question 18

Where is the site of calcium storage in the skeletal muscle fibers?

Answer 18

the sarcoplasmic reticulum