Locomotion and movement - skeletal system joints muscles mechanism of muscle contraction - Question Bank
1. Which of the following is a characteristic of smooth muscle?
2. The skeletal structure of the arm consists of:
3. What is the role of ATP in muscle contraction?
4. Which of the following is a type of synovial joint characterized by opposing surfaces that are flat or slightly curved, allowing gliding movements?
5. The 'H zone' within a sarcomere is the region that:
6. What is the primary function of the hyoid bone?
7. The 'cross-bridge cycling' in muscle contraction refers to the:
8. Which part of the vertebral column has the largest and strongest vertebrae to support body weight?
9. What is the total number of bones in the adult human body?
10. The 'Z line' or 'Z disc' marks the boundary of which functional unit?
11. Which joint allows for flexion and extension, like in the fingers and toes?
12. What is the term for the connective tissue sheath that surrounds a fascicle (bundle of muscle fibers)?
13. The 'M line' is located in the center of which band in a sarcomere?
14. Which of the following is a characteristic of cardiac muscle?
15. The process of muscle relaxation involves:
16. What is the substance that stores oxygen in muscle cells?
17. The 'I band' in a sarcomere represents the region where:
18. What is the primary function of ligaments?
19. Which bone articulates with the tibia and fibula to form the knee joint?
20. The connection between a motor neuron and a muscle fiber is called the:
21. What is the term for the invagination of the sarcolemma that carries the action potential deep into the muscle fiber?
22. Which of the following is NOT a component of the axial skeleton?
23. What is the process by which a muscle fiber shortens?
24. The 'A band' in a sarcomere represents the region where:
25. Which type of joint allows for rotation around a central axis, like in the neck (atlas-axis articulation)?
26. What is the primary protein that forms the thick filaments in muscle cells?
27. The 'red' color of skeletal muscles is due to the presence of:
28. Which part of the pelvis articulates with the femur?
29. Muscle fatigue is often associated with the accumulation of which metabolic byproduct?
30. What is the main function of tropomyosin in muscle contraction?
31. The skull is an example of which type of joint?
32. Which bone is commonly called the 'funny bone'?
33. The elbow joint is primarily a type of:
34. What type of joint is found between the carpals and metacarpals?
35. What is the neurotransmitter released at the neuromuscular junction that triggers muscle contraction?
36. Which part of a muscle cell contains the sarcoplasmic reticulum?
37. The sliding filament theory explains muscle contraction by the:
38. A decrease in muscle mass due to lack of use is termed:
39. What connective tissue connects muscles to bones?
40. Which bones form the pectoral girdle?
41. What is the primary role of the skeletal system?
42. The sternum is also known as the:
43. What part of the vertebral column consists of five fused vertebrae?
44. Which joint allows for the greatest range of motion, like in the shoulder and hip?
45. What is the name of the membrane that surrounds the entire skeletal muscle?
46. The 'all-or-none' principle in muscle contraction refers to:
47. Which ion is crucial for initiating muscle contraction by binding to troponin?
48. What is the functional unit of muscle contraction?
49. The 'powerhouse' of the cell, responsible for ATP production, is abundant in muscle cells. What is this organelle?
50. Which type of muscle tissue is characterized by voluntary control and striations?