Podcast
Questions and Answers
The gastrocnemius muscle primarily influences which of the following areas?
The gastrocnemius muscle primarily influences which of the following areas?
- Upper limb and shoulder joint
- Forearm supination and flexion
- Arm adduction and rotation
- Lower limb, hip, and lumbar area (correct)
Which of the following scenarios would primarily engage the gluteal muscles?
Which of the following scenarios would primarily engage the gluteal muscles?
- Reaching for an object overhead
- Twisting the forearm to tighten a screw
- Flexing the elbow during a bicep curl
- Performing a side leg raise (correct)
Which action is primarily facilitated by the biceps brachii muscle?
Which action is primarily facilitated by the biceps brachii muscle?
- Adducting the arm towards the body
- Flexing and supinating the forearm (correct)
- Extending the leg at the knee
- Rotating the shoulder joint
What is the combined action of the hamstrings?
What is the combined action of the hamstrings?
What movements are primarily supported by the quadriceps muscles?
What movements are primarily supported by the quadriceps muscles?
Which of the following muscles is the strongest in the human body?
Which of the following muscles is the strongest in the human body?
What main function is served by the masseter muscle?
What main function is served by the masseter muscle?
Besides the masseter, which other muscle assists in closing the mouth?
Besides the masseter, which other muscle assists in closing the mouth?
Which of the following is a primary function of the latissimus dorsi muscle?
Which of the following is a primary function of the latissimus dorsi muscle?
What is the primary action of the pectoralis major muscle?
What is the primary action of the pectoralis major muscle?
Which statement accurately describes the role of smooth muscle in the body?
Which statement accurately describes the role of smooth muscle in the body?
What is the main function of cardiac muscle?
What is the main function of cardiac muscle?
Damage to the sternocleidomastoid would most likely affect which movement?
Damage to the sternocleidomastoid would most likely affect which movement?
An athlete who frequently performs squats and leg presses is primarily developing which muscle group?
An athlete who frequently performs squats and leg presses is primarily developing which muscle group?
If someone is having difficulty adducting their arm, which muscle is most likely injured?
If someone is having difficulty adducting their arm, which muscle is most likely injured?
Which muscle is primarily responsible for flexing the forearm?
Which muscle is primarily responsible for flexing the forearm?
What is the role of the tibialis anterior?
What is the role of the tibialis anterior?
Which muscle extends the shoulder?
Which muscle extends the shoulder?
Which of the following muscles is located on the posterior side of the leg?
Which of the following muscles is located on the posterior side of the leg?
What is the primary function of the external oblique muscle?
What is the primary function of the external oblique muscle?
Flashcards
Hamstrings
Hamstrings
Extend the hip and flex the knee; stabilize knee/hip during walking.
Quadriceps
Quadriceps
Extend the leg at the knee and flex the thigh at the hip.
Gastrocnemius
Gastrocnemius
Involved in walking and posture; affects the lower limb and lumbar area.
Deltoids
Deltoids
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Gluteal Muscles
Gluteal Muscles
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Latissimus Dorsi
Latissimus Dorsi
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Pectoralis Major
Pectoralis Major
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Biceps
Biceps
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Masseter
Masseter
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Temporalis
Temporalis
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Study Notes
- Muscles facilitate movement, maintain posture, and regulate temperature.
Skeletal Muscles
- Hamstrings extend the hip, flex the knee, and stabilize the knee and hip joints during walking.
- Quadriceps extend the leg at the knee, flex the thigh at the hip, and help stabilize the knee.
- Gastrocnemius is involved in walking and posture, and affects the lower limb, hip, and lumbar area.
- Deltoids move the arms and stabilize the shoulder joint.
- Gluteal muscles extend and abduct the thigh, while adducting, internally rotating, and externally rotating the thigh.
Other Muscles
- Latissimus dorsi depresses the arm, extends the shoulder, and internally rotates the shoulder.
- Pectoralis major adducts, medially rotates, transversely adducts, and extends the arm.
- Biceps flexes and supinates the forearm.
Muscle Types
- Cardiac muscle propels blood.
- Smooth muscle shortens and propels contents across organ systems.
- Masseter runs from the temporal bone to the mandible, lifts the lower jaw to close the mouth, and it is the strongest muscle in the body.
- Temporalis closes the mouth.
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