Muscular system Anatomy and physiology review
Flashcard
•
Science
•
11th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the organelle that contains actin and myosin?
Back
Myofibril
2.
FLASHCARD QUESTION
Front
What is the gap between the nerve cell and sarcolemma called?
Back
Synaptic cleft
3.
FLASHCARD QUESTION
Front
Which muscle is located in the upper arm and is responsible for flexing the elbow?
Back
Biceps
4.
FLASHCARD QUESTION
Front
What provides energy for muscle contraction and relaxation?
Back
ATP (Adenosine Triphosphate)
5.
FLASHCARD QUESTION
Front
Which type of muscle is found in the heart?
Back
Cardiac muscle
6.
FLASHCARD QUESTION
Front
What is the functional unit of a muscle fiber called?
Back
Sarcomere
7.
FLASHCARD QUESTION
Front
What is the role of calcium ions in muscle contraction?
Back
Calcium ions bind to troponin, causing tropomyosin to move and expose binding sites for myosin on actin.
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