Musculoskeletal
MC
MC
Skeletal Muscles working together
Short answer
Diagrams
100
Which of the following best describes the movement at a hinge joint such as the elbow?
A. Rotation and circumduction
B. Flexion and extension
C. Abduction and adduction
D. Elevation and depression
B. Flexion and extension
100
The _______ is the muscle that contracts to produce movement, while the _______ muscle opposes this action.
Agonist, antagonist
100
What two proteins are involved in the sliding filament theory of muscle contraction?
Answer: Actin and myosin
100
What is the protruding structure?
Answer: Osteon
200
What is a key difference between osteoporosis and osteoarthritis?
A. Osteoporosis affects muscles, osteoarthritis affects nerves
B. Osteoporosis results in joint inflammation, osteoarthritis weakens bones
C. Osteoporosis weakens bones, osteoarthritis damages joint cartilage
D. Osteoporosis affects the spine only, osteoarthritis affects only the knees
C. Osteoporosis weakens bones, osteoarthritis damages joint cartilage
200
The _______ of a muscle is the attachment point to a stationary bone, while the _______ is the attachment to the moving bone.
Origin, insertion
200
Name the three types of muscles found in the human body.
Answer: Skeletal, cardiac, and smooth
200
What is structure A?
Answer: Diaphysis
300
Which of the following is true about fibrous (fixed) joints?
A. They allow a wide range of movement
B. They are found in the knees and elbows
C. They are held together by ligaments and have synovial fluid
D. They are immovable and found in the skull
D. They are immovable and found in the skull
300
The muscle known as the _______ is the main muscle responsible for a specific movement.
Prime mover (also acceptable: agonist)
300
What is found between the bones in a synovial joint to reduce friction?
Answer: Synovial fluid
300
What structure is A and C?
Answers: A - I band. C - Myosin
400
Which of the following bones is part of the appendicular skeleton?
A. Sternum
B. Femur
C. Skull
D. Vertebrae
B. Femur
400
_______ muscles assist the prime mover by adding extra force or reducing unnecessary movement.
Fixator
400
What is the main function of compact bone?
Answer: Provides strength and support
400
What is structure 4 and 7?
Answers: 4 - Muscle Fibre. 7 - Tendon
500
During a bicep curl, which muscle acts as the agonist?
A. Triceps brachii
B. Hamstring
C. Biceps brachii
D. Deltoid
Answer: C. Biceps brachii
500
_______ muscles assist the prime mover by adding extra force or reducing unnecessary movement.
Synergist
500
What part of a long bone contains bone marrow?
Answer: The medullary cavity (or marrow cavity)
500
What is this joint?
Answer: Hinge