Worksheets11 ATAR HB Musculoskeletal system
Total questions: 50
Worksheet time: 1hrs 3mins
Found attached to bones throughout the body
smooth
cardiac
skeletal
all
Found in the heart
smooth
cardiac
skeletal
all
Found in the walls of hollow organs; also called visceral
smooth
cardiac
skeletal
all
The following is NOT one of the 3 Joint Classifications..
Cartilaginous
Cartilage
Fibrous
Synovial
Which part of the skeletal system protects the brain?
pelvis
ribs
scapula
cranium/skull
Which of the following shows the correct organisation of skeletal muscles from smallest to largest structures?
Muscle, myofibrils, sarcomere, bundles of muscle fibres
Myofilaments, myofibrils, bundles of muscle fibres, muscle
Myofilaments, myofibrils, tendons, bundles of muscle
Myofilaments, connective tissue, bundles of muscle fibres, myofibrils
The biceps femoris and the quadriceps are antagonistic muscles. When the leg is extended, the muscles that make up the quadriceps contract. In this case, the:
quadriceps is the agonist and acts as an extensor.
biceps femoris is the agonist and acts as an extensor.
quadriceps is the antagonist and acts as a flexor.
biceps femoris is the agonist and acts as a flexor.
In extending the arm, the:
triceps relaxes.
biceps pushes.
triceps contracts.
biceps contracts.
Smooth muscle tissue is found:
attached to bones.
in the heart.
in the tongue.
in the stomach wall.
A likely consequence of repeated muscle contractions is:
a decrease in the amount of enzymes used in the contraction of myofilaments.
an increase in oxygen concentration in blood vessels supplying the muscles.
a decrease in blood flow to the muscles as oxygen is used up.
an increase in the amount of ATP that has been broken down to ADP.
Synergists do NOT have a role in:
preventing unwanted joint movement.
maintaining posture.
extending the agonist.
facilitating the prime mover.
Tendons:
contract when pulled by muscles.
are fibrous and inelastic.
help push bones apart.
join bones together.
What is the correct order of the following joint types from least to most movement?
Fibrous, cartilaginous, ball and socket, hinge
Cartilaginous, fibrous, hinge, ball and socket
Fibrous, cartilaginous, hinge, ball and socket
Ball and socket, hinge, cartilaginous, fibrous
Which row in the following table correctly outlines the differences between compact bone and cancellous bone?
i
ii
iii
iv
Which of these substances are found in bones?
Hydrogen
Calcium
Sodium
Fiber
Muscles and bones must work together in order for movement to occur.
True
False
Which part of the bone is the "???" ?
(a)
What is a simple bone break?
Bone breaks into two pieces
There are fragments on bone
Bone punctures the skin
Tendons attach bone to muscle.
True
False
How the muscular system help in posture, support, and body position?
When muscles contract, they pull on the bones to make them move.
Help transport substances like blood or food from one part of the body to another.
When body temperature is low, the skeletal muscles increase their activity to increase the temperature by shivering.
Skeletal muscles contract to hold the body upright or in a certain position
Skeleton provides:
Support to the body only.
Support and protection of the body only.
Support, protection, and movement of the body.
None of them.
Bones are made up from:
Epithelial tissue
Connective tissue
Nervous tissue
Muscles tissue
Which of these is a sign of osteoporosis?
Strong bones
Growing taller
Strong heart
Pain in the bones
Osteoporosis is a disease of the joints
True
False
Which of these is a sign of osteoarthritis?
None of these
Improved movement in joints
Define the function of a flat bone and provide an example of one.
Define the function of a long bone and provide an example of one.
Define the function of an irregular bone and provide an example of one.
What is the primary function of the sliding filament theory in muscle contraction?
To generate ATP
To move actin and myosin filaments past each other
To regulate calcium ion concentration
To activate neurotransmitters at the neuromuscular junction
Which protein molecule acts as the "molecular motor" responsible for sliding filaments past each other during muscle contraction?
Tropomyosin
Troponin
Actin
Myosin
During muscle contraction, which ion binds to troponin, causing a conformational change that exposes the active sites on actin?
Sodium
Potassium
Calcium
Magnesium
What is the role of ATP in the sliding filament theory?
a) . b) A. c) ATP provides energy to move tropomyosin away from the myosin-binding sites on actin. d) ATP stabilizes the actin and myosin filaments.
ATP binds to myosin, allowing it to detach from actin
TP binds to troponin, causing it to change shape
ATP provides energy to move tropomyosin away from the myosin-binding sites on actin
ATP stabilizes the actin and myosin filaments.
Which step in the sliding filament theory involves the release of ADP and inorganic phosphate from myosin, resulting in the power stroke?
Cross-bridge formation
Cross-bridge cycling
Cross-bridge detachment
Cross-bridge activation
What is the sliding filament theory?
Which filaments slide during muscle contraction?
What triggers the sliding filament theory?
How does ATP play a role in the sliding filament theory?
What happens to the sarcomere during muscle contraction according to the sliding filament theory?
Movement of a limb away from the midline is known as
(a)
This muscle causes the desired action. Often referred to as the prime mover.
(a)
Shortening of a muscle causes what to occur
(a)
This muscle acts indirectly in steadying a joint
(a)
This fibrous tissue attaches muscle to bone
(a)
This fibrous tissue attached bone to bone
(a)
This type of muscle contracts to immobilise a joint.
(a)
