Podcast
Questions and Answers
Which type of joint allows for the greatest range of motion?
Which type of joint allows for the greatest range of motion?
Which of the following is NOT a subtype of a diarthrodial joint?
Which of the following is NOT a subtype of a diarthrodial joint?
Which type of muscle fiber arrangement allows for the greatest shortening velocity and range of motion?
Which type of muscle fiber arrangement allows for the greatest shortening velocity and range of motion?
Which of the following is an example of an isometric contraction?
Which of the following is an example of an isometric contraction?
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Which of the following is the antagonist muscle during a bicep curl?
Which of the following is the antagonist muscle during a bicep curl?
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Flashcards
Ligament
Ligament
A connection of bones in a joint.
Diarthrodial joint
Diarthrodial joint
A type of joint that is freely movable.
Tendon
Tendon
Connects muscles to bones.
Isometric contraction
Isometric contraction
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Agonist muscle
Agonist muscle
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Study Notes
Joint Connections
- A connection of bones in a joint is called an articulation.
- Ligaments connect bones to bones.
- Tendons connect muscles to bones.
- Aponeurosis is a flat sheet of tendon that connects muscles.
Joint Types
- Diarthrodial joints are freely movable joints.
- Synarthrodial joints are immovable joints.
- Amphiarthrodial joints have limited movement.
Diarthrodial Joint Subtypes
- Hinge
- Ball and Socket
Muscle Attachments
- Tendons attach muscles to bones.
- The origin is the less movable end of a muscle, typically more proximal.
- The insertion is the more movable end of a muscle, typically more distal, where the action occurs.
Muscle Structure - Pennate Muscles
- Some muscles have a pennate arrangement, where muscle fibers are positioned obliquely to the central tendon.
- Pennate muscles have a different structure that influences force and velocity.
Muscle Contractions
- Isometric contraction: Muscle develops tension but does not change length.
- Concentric contraction: Muscle shortens while developing tension. This is associated with movement in the direction of the power stroke.
- Eccentric contraction: Muscle lengthens while developing tension. This is usually used to control speed or prevent an object from moving further.
- Isotonic contraction: This includes both concentric and eccentric contractions, involving muscle shortening or lengthening.
Muscle Actions
- Agonist muscles are the muscles primarily responsible for a movement.
- Antagonist muscles oppose the action of the agonist.
Stabilizer Muscles
- Stabilizer muscles contract to maintain posture or a position of a joint that another muscle crosses or works on two joints when a muscle crosses more than one joint - this is to prevent or limit movement at one joint while the other joint is moving.
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Description
Explore the intricate relationships between joints and muscles in this anatomy quiz. Learn about different types of joints, muscle attachments, and the various arrangements of muscle fibers. Test your understanding of key concepts such as ligaments, tendons, and muscle contractions.
