Muscle Structure and Function (Grade 10 NSC Matric Life Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the correct hierarchical sequence of skeletal muscle organisation?
What is the correct hierarchical sequence of skeletal muscle organisation?
Myofibrils → Muscle fibres → Fascicles
What are the basic functional units of any muscle?
What are the basic functional units of any muscle?
Myofibrils
Which connective tissue surrounds muscle fibres to create fascicles?
Which connective tissue surrounds muscle fibres to create fascicles?
Perimysium
What is the primary function of tendons?
What is the primary function of tendons?
Connect muscles to bones & transfer force
What are Z-disks in sarcomere structure?
What are Z-disks in sarcomere structure?
Boundaries marking the ends of sarcomeres
During muscle contraction, how do actin and myosin filaments interact?
During muscle contraction, how do actin and myosin filaments interact?
Myosin heads grab actin & pull it inward
What happens to the filament lengths during muscle contraction?
What happens to the filament lengths during muscle contraction?
They don't change length, only slide
What happens to the H-zone during muscle contraction?
What happens to the H-zone during muscle contraction?
It becomes narrower
What molecule is required for muscle contraction to occur?
What molecule is required for muscle contraction to occur?
ATP
How is ATP produced for muscle contraction?
How is ATP produced for muscle contraction?
Cellular respiration using oxygen