Podcast
Questions and Answers
Which muscle type is characterized by involuntary contractions and the presence of intercalated discs?
Which muscle type is characterized by involuntary contractions and the presence of intercalated discs?
- Visceral muscle
- Cardiac muscle (correct)
- Skeletal muscle
- Smooth muscle
Which of the following muscles is primarily responsible for hip flexion?
Which of the following muscles is primarily responsible for hip flexion?
- Gluteus maximus
- Rectus abdominis
- Hamstrings
- Iliopsoas (correct)
In a force couple relationship involving the pelvis, which muscles work together to create anterior pelvic tilt?
In a force couple relationship involving the pelvis, which muscles work together to create anterior pelvic tilt?
- Hamstrings and hip flexors
- Erector spinae and hip flexors (correct)
- Gluteals and abdominals
- Abdominals and hamstrings
During the 'Pelvic Curl' exercise, what is the primary focus of the movement?
During the 'Pelvic Curl' exercise, what is the primary focus of the movement?
Which muscle is the prime mover in the 'Chest Lift' exercise?
Which muscle is the prime mover in the 'Chest Lift' exercise?
In the 'Hundred' exercise, what breathing pattern is typically emphasized and why?
In the 'Hundred' exercise, what breathing pattern is typically emphasized and why?
During the 'Roll-Up' exercise, what is the most important aspect to focus on to protect the spine?
During the 'Roll-Up' exercise, what is the most important aspect to focus on to protect the spine?
Which of the following is a key benefit of performing the 'Spine Stretch Forward' exercise?
Which of the following is a key benefit of performing the 'Spine Stretch Forward' exercise?
What is the main objective of the 'Rolling Like a Ball' exercise?
What is the main objective of the 'Rolling Like a Ball' exercise?
In the context of the 'Teaser' exercise, what is the primary role of the abdominal muscles?
In the context of the 'Teaser' exercise, what is the primary role of the abdominal muscles?
Flashcards
Iliopsoas Muscle
Iliopsoas Muscle
A major hip flexor composed of the psoas major and iliacus muscles.
Rectus Femoris
Rectus Femoris
A muscle located in the thigh, part of the quadriceps, that extends the knee and flexes the hip.
Rotator Cuff
Rotator Cuff
A group of four muscles and their tendons that stabilize the shoulder joint.
Deltoid Muscle
Deltoid Muscle
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Pelvic Curl
Pelvic Curl
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One Leg Circle
One Leg Circle
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Crisscross
Crisscross
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Teaser
Teaser
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Rolling Like a Ball
Rolling Like a Ball
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Back Extension Prone
Back Extension Prone
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Study Notes
Muscles at Work
- Muscles contract, lengthen, or stay the same length depending on the opposing forces.
- Muscle contractions are classified as dynamic (isotonic) or static (isometric).
- Dynamic contractions involve visible joint movement, further categorized into concentric (muscle shortening) and eccentric (muscle lengthening). Concentric contractions occur in the same direction as the primary muscle action, while eccentric contractions occur in the opposite direction.
- Static contractions involve no visible joint movement, and the forces are balanced.
Muscle Roles
- Movers (agonists) produce the desired movement at a joint.
- Secondary muscles (assistant movers) aid the primary mover.
- Antagonists oppose the desired movement.
- Synergists coordinate with the prime mover to neutralize undesired actions.
- Stabilizers maintain joint position through isometric contractions.
Muscles as Force Couples
- Force couples involve muscles acting together to produce rotation.
- Muscles often act together to create or prevent specific movements like a pelvic tilt.
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