Questions and Answers
What is the annular ligament?
c
Which ligament prevents the tibia from moving too far medially on the femur?
B
Synovial joints are different from cartilaginous and fibrous joints due to the presence of a joint (synovial) cavity.
True
Opposition and reposition occur only at the thumb or the first carpometacarpal joint.
Signup and view all the answers
Joint classifications are known as structural classifications when based on the degree of motion they allow.
Signup and view all the answers
Which ligament of the coxal joint supports the inferior aspect of the joint?
Signup and view all the answers
Which cartilaginous joint is found only in young, growing people?
Signup and view all the answers
Which of the following is an example of a pivot joint?
Signup and view all the answers
The coxal joint is an articulation formed by:
Signup and view all the answers
Which type of fibrous joint is found between bones of the cranium?
Signup and view all the answers
Which of the following is a joint found only in the skull?
Signup and view all the answers
What feature is NOT one of the three unique features of the synovial joint?
Signup and view all the answers
Which type of angular movement moves a body part away from the midline of the body?
Signup and view all the answers
Which of the following has the greatest range of motion?
Signup and view all the answers
Which of the following is NOT a function of synovial fluid?
Signup and view all the answers
Select the order of functional classes of synovial joints that represents the least number of axes to the most number of axes.
Signup and view all the answers
Which movement is an example of abduction?
Signup and view all the answers
Which of the following is NOT a function of joints?
Signup and view all the answers
The shoulder and hip joints are similar because they are both:
Signup and view all the answers
What type of biaxial joint is characterized by articulating bones with a deeper complementary fit?
Signup and view all the answers
What movement caused Elizabeth's injury when the angle between her right foot and tibia increased?
Signup and view all the answers
What best describes cartilaginous joints?
Signup and view all the answers
What is moving a limb away from the median plane of the body called?
Signup and view all the answers
Which of the following is a freely movable joint?
Signup and view all the answers
Kayleigh wears a cast to immobilize her elbow. What functional class of joint does this resemble?
Signup and view all the answers
What is the fibular collateral ligament?
Signup and view all the answers
What is the posterior cruciate ligament?
Signup and view all the answers
What are connective tissue sacs lined with synovial membranes that act as cushions in places where friction develops called?
Signup and view all the answers
Where can pronation and supination occur?
Signup and view all the answers
What is the hip known as?
Signup and view all the answers
What type of joint is a ball-and-socket joint?
Signup and view all the answers
Classify the elbow joint, which is structured with the convex surface of one bone fitting into the concave depression of another bone.
Signup and view all the answers
Which joint is associated with the rotator cuff?
Signup and view all the answers
What movement would you expect to see in a pivot joint?
Signup and view all the answers
Which key feature distinguishes a synovial joint from other joint types?
Signup and view all the answers
Study Notes
Joint Types and Classifications
- Annular Ligament: A connective tissue structure encircling a joint.
- Tibial Ligament Function: Prevents excessive medial movement of the tibia on the femur.
- Synovial Joints: Characterized by the presence of a joint cavity, differing from cartilaginous and fibrous joints.
- Opposition and Reposition: Movements exclusive to the thumb at the first carpometacarpal joint.
Joint Classifications
- Structural Classifications: Based on the physical structure rather than the degree of motion allowed.
- Coxal Joint: Formed by the head of the femur fitting into the acetabulum.
- Fibrous Joints in Cranium: Linked by sutures, immovable connections found exclusively in the skull.
- Key Feature of Synovial Joints: The presence of a joint cavity distinguishes them from other joint types.
Movements and Functional Classes
- Angular Movement: Abduction moves a body part away from the midline.
- Multiaxial Joints: These joints offer the greatest range of motion.
- Joint Functions: Functions include movement but not necessarily a wide variety of motions.
- Joint Immobilization: Resembles synarthrosis when a cast is used for immobilization.
Synovial Fluid and Joints
- Functions of Synovial Fluid: Provides lubrication but does not protect tendons.
- Functional Classes of Synovial Joints: Ordered from least to most axes: nonaxial, uniaxial, biaxial, multiaxial.
- Hinge Joint: Defined by convex surfaces fitting into concave surfaces.
Specific Joint Features
- Bursae: Synovial membrane-lined sacs that reduce friction.
- Rotational Movement: Characteristic of pivot joints, allowing bones to rotate around an axis.
- Shoulder Joint and Rotator Cuff: The shoulder is supported by the rotator cuff muscles and tendons.
Cartilaginous Joints and Motion
- Cartilaginous Joints: Generally offer little to no motion; specific types like the epiphyseal plate are found in growing individuals.
- Saddle Joints: A type of biaxial joint with complementary convex and concave surfaces for mobility.
Examples of Joint Actions
- Plantar Flexion: Occurs when the angle between the foot and tibia increases as toes point downward.
- Pronation and Supination: Movements occurring at the proximal radioulnar joint in the forearm.
- Spreading Fingers: An example of abduction.
Summary of Joint Characteristics
- Coxal Joint and Hip: Both refer to the same structure; categorized as a ball-and-socket joint, allowing movement in multiple axes.
- Prevention of Movements: Ligaments like the fibular collateral and posterior cruciate fulfill roles in joint stability but may be noted as not applicable or varying in context for injury.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on key terms and concepts from Chapter 8 of Anatomy and Physiology. This quiz includes definitions of important anatomical structures such as ligaments and synovial joints. Perfect for reinforcing your understanding of human anatomy.
