4.1 Lesson 2: Musculoskeletal System

​Use your graphic organizer to write the functions of the skeletal system with the description of their function using slides 3-7

Support
● Bones provide a framework for your body and

make it possible for you stand up right.

Protection
● Your skull, rib cage and vertebrae protect your

internal organs from injury.

Movement
● Bones act as levers and points of attachment for

muscles.

Blood Cell Production
● A type of soft tissue, red marrow found in flat

bones such as ribs, pelvis and skull produce red
and white blood cells.

Storage
● Bones store mineral such as calcium which is

necessary for nerves and muscles to work
properly.

​Watch the video and answer the questions that follow.
These are the main ideas from the video:

• Bone (206 in total)

• Ligaments (join bones)

• Tendons (connect muscles to bones)

• Cartilage (a form of connective tissue)

• The main functions of the skeletal system are:

  • Support (provides structure for body movement)

  • Joint formation for flexibility in movement

  • Protection of organs (brain and heart)

  • Production of red blood cells in bone marrow

  • Storage of minerals like calcium for muscle function

Multiple Choice

What is the function of the skeletal system related to providing a framework for the body?

• Movement

• Support

• 
  Storage

• 
  Protection

Multiple Choice

Which part of the skeletal system is responsible for protecting internal organs from injury?

• 
  The skull, rib cage, and vertebrae

• 
  The arms and legs

• 
  The pelvis and skull

• 
  The hands and feet

Multiple Choice

How do bones contribute to movement?

• By acting as barriers to muscle expansion

• 
  By producing blood cells that aid in movement

• 
  By acting as levers and points of attachment for muscles

• 
  By storing minerals that directly cause movement

Multiple Choice

Where is red marrow found and what does it produce?

• 
  In flat bones such as ribs, pelvis, and skull; it produces red and white blood cells

• In the joints between bones; it produces synovial fluid

• In long bones such as femur and tibia; it produces platelets

• In the outer layer of bones; it produces cartilage

Multiple Choice

What do bones store that is necessary for nerves and muscles to work properly?

• 
  Vitamins

• Calcium

• Proteins

• Carbohydrates

Multiple Choice

Which part of the body does the skeletal system primarily protect?

• 
  Muscles

• 
  Internal organs

• Skin

• 
  Nerves

Multiple Choice

Which vitamin is essential for calcium absorption in bones?

• Vitamin A

• Vitamin B

• Vitamin B12

• Vitamin D

Multiple Choice

Which function of the skeletal system involves protecting the brain?

• Support

• 
  Movement

• 
  Blood cell production

• 
  Protection

Multiple Choice

How do bones contribute to blood cell production?

• 
  By producing red and white blood cells directly

• 
  By providing a surface for bone marrow to produce blood cells

• By storing blood

• By releasing hormones that stimulate blood cell production

Multiple Choice

Which type of marrow is responsible for blood cell production?

• 
  Yellow marrow

• Osteoblasts

• Red marrow

• Osteoclasts

​Use your graphic organizer to write the functions of the muscular system with the description of their function using slides 22-26 and to answer the questions from the Pause & Process slide.

Movement
● All movement of our body.

Movement of Substance
● Push food through the digestive system, and

pump blood through the heart

Posture
● Keeps us upright and standing or sitting

Generate Heat
● Makes and regulates heat within the body

Muscles Before

Running

Muscles After Running

​Complete your guided notes while you watch the following video The Musculoskeletal System. Then answer the questions that follow using your guided notes.

Multiple Choice

What is the musculoskeletal system made up of?

• 
  Endocrine and immune systems

• 
  Nervous and digestive systems

• 
  Muscular and skeletal systems

• Circulatory and respiratory systems

Multiple Choice

How many muscles do humans have approximately?

• 
  Nearly 800

• More than 1000

• 
  About 630

• Over 500

Multiple Choice

What type of muscles move only when we want them to?

• 
  Involuntary muscles

• 
  Smooth muscles

• Voluntary muscles

• Cardiac muscles

Multiple Choice

Which is the longest bone in the human body?

• 
  Skull

• 
  Rib

• Spine

• Femur

Multiple Choice

How many bones does our body have?

• 215

• 187

• 198

• 206

Multiple Choice

What do semi-mobile joints have?

• 
  Some mobility

• 
  Limited to no mobility

• No mobility

• Full mobility

Multiple Choice

What protects our brain?

• Ribs

• Spine

• Jaw

• Skull

Multiple Choice

What is necessary to maintain a healthy musculoskeletal system?

• 
  Drinking less water

• Plenty of physical exercise

• 
  Avoiding sunlight

• 
  Eating junk food

​Complete your guided notes while you watch the following video The Musculoskeletal System. Then answer the questions that follow using your guided notes.

Multiple Choice

What are the three main types of muscles in the muscular system?

• Smooth, rough, cardiac

• Skeletal, cardiac, smooth

• Long, short, irregular

• Cardiac, smooth, rough

Multiple Choice

Which type of muscle is responsible for heartbeat?

• Skeletal

• Cardiac

• Smooth

• Long

Multiple Choice

What controls almost all movements by sending signals to muscle fibers?

• Circulatory system

• Nervous system

• Skeletal system

• Respiratory system

Multiple Choice

Which type of muscle contraction generates opposing forces by shortening and lengthening muscle fibers?

• Parallel contraction

• Complementary contraction

• Antagonistic contraction

• Inverse contraction

Multiple Choice

What is the role of slow-twitch muscle fibers in the body?

• React instantly

• Provide short bursts of energy

• Use energy slowly for longer periods

• Gain muscle mass quickly

Multiple Choice

How are skeletal muscles controlled in the body?

• Autonomously

• By the circulatory system

• By the somatic nervous system

• Through conscious effort

Multiple Choice

Which type of muscle is beyond direct control by the body?

• Skeletal

• Cardiac

• Smooth

• Rough

Multiple Choice

What percentage of heat in the body is provided by muscles?

• 50%

• 75%

• 85%

• 90%

Multiple Choice

What helps in maintaining the necessary body temperature for survival?

• Blood circulation

• Sweating

• Muscle contraction

• Breathing

Multiple Choice

How does the muscular system impact daily activities, according to the transcript?

• By controlling vision

• By regulating emotions

• From blinking to crossing the finish line

• Through speech production

  
  

Open Ended

Exit Ticket: Complete a 3-2-1 Summary of the Musculoskeletal System

• Three things you have learned

• Two things you found interesting

• One question you still have