Question 1
What is the main role of the skeleton in support?
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To keep the body upright and give it shape
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To pump blood around the body
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To release insulin into blood
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To digest starch in the small intestine
Question 2
Which part of the skeleton protects the brain?
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Skull
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Rib cage
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Pelvis
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Femur
Question 3
Which structure mainly protects the heart and lungs?
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Rib cage
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Cranium
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Vertebral column
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Patella
Question 4
Which structure protects the spinal cord?
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Vertebral column
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Rib cage
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Clavicle
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Scapula
Question 5
Where are new blood cells made in the skeleton?
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Bone marrow
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Cartilage
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Synovial fluid
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Ligament
Question 6
What does a ligament connect?
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Bone to bone
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Muscle to bone
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Muscle to muscle
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Bone to cartilage only
Question 7
What does a tendon connect?
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Muscle to bone
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Bone to bone
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Bone to bone marrow
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Cartilage to cartilage
Question 8
What is the main function of cartilage at joints?
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To reduce friction and cushion movement
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To carry oxygen in blood
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To produce antibodies
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To attach muscles to bones
Question 9
What is the role of synovial fluid in a synovial joint?
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It lubricates the joint
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It hardens to form new bone
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It stores glucose for muscles
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It carries nerve impulses
Question 10
Which type of joint is the knee?
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Hinge joint
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Ball-and-socket joint
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Pivot joint
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Fixed joint
Question 11
Which type of joint is the shoulder?
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Ball-and-socket joint
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Hinge joint
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Fixed joint
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Pivot joint
Question 12
What do antagonistic muscles do?
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Work in pairs so one contracts while the other relaxes
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Both contract fully at the same time for normal movement
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Both relax fully to pull bones
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Only work during sleep
Question 13
At the elbow, what happens when the forearm bends?
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Biceps contracts and triceps relaxes
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Triceps contracts and biceps relaxes
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Both biceps and triceps contract equally
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Both biceps and triceps relax
Question 14
At the elbow, what happens when the forearm straightens?
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Triceps contracts and biceps relaxes
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Biceps contracts and triceps relaxes
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Both muscles contract fully
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Neither muscle changes
Question 15
Why can muscles move bones but not push them back by themselves?
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Muscles can only pull when they contract
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Muscles can only push and never pull
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Bones actively pull muscles
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Tendons shorten without muscles
Question 16
In movement at a joint, what do bones mainly act as?
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Levers
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Pumps
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Filters
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Insulators
Question 17
A stronger contraction of a muscle usually produces what change?
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A larger force on the bone
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A lower force on the bone
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No force at all
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Only heat and no movement
Question 18
What is the SI unit used to measure force from a muscle?
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Newton (N)
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Joule (J)
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Watt (W)
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Volt (V)
Question 19
Which is most likely if a ligament around the ankle is torn?
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The joint becomes less stable
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The bone marrow stops making blood cells
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The tendon turns into cartilage
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The muscle cannot release energy
Question 20
Which statement correctly describes the pelvis?
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It helps support the upper body and protects organs in the lower abdomen
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It contains the lungs for gas exchange
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It is the only bone that can contract
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It pumps blood to the legs