Musculoskeletal System Structure

Question 1

What is the musculoskeletal system?

Answer 1

comprised of the skeletal and muscular system that work together to support and move the body

Question 2

What are the 4 basic types of tissue?

Answer 2

1. epithelial
2. connective
3. nervous
4. muscular

Question 3

What are the 3 types of tissue?

Answer 3

1. skeletal
2. smooth
3. cardiac

Question 4

What are the properties muscles possess

Answer 4

1. extensibility = the ability to be stretched
2. elasticity = the ability to return to its original length after being stretched

Question 5

What is movement?

Answer 5

muscle contraction + extensibility + elasticity = movement

Question 6

What is the structure of muscle fibres?

Answer 6

• elongated cylinders that contain many nuclei surrounded by a thin, transparent membrane called the sarcolemma
• hundreds of thousands of myofibrils are contained in a muscle fibre
• sarcoplasmic reticulum surrounds each muscle fibre
• each myofibril is made up of smaller microfilaments

Question 7

What are the 2 types of microfilaments? and what are they composed of?

Answer 7

1. Thick myofilaments = composed of mainly myosin protein
2. thin myofilaments = composed of mainly actin protein

Question 8

Where is skeletal muscle located?

Answer 8

attached to bones

Question 9

Where is smooth muscle located?

Answer 9

internal organs

Question 10

Where is cardiac muscle located?

Answer 10

the heart

Question 11

What is the control and function of skeletal muscle?

Answer 11

• voluntary control
• helps move body (e.g. walking, running)
• maintaining body temperature
• store nutrients

Question 12

What is the control and function of smooth muscle?

Answer 12

• involuntary control
• move internal organs
• maintain blood pressure and flow

Question 13

What is the control and function of cardiac muscle?

Answer 13

• involuntary control
• push blood from heart into the blood vessels