#1
What is the primary function of synovial fluid in a joint?
Reduces friction between joint surfaces
ExplanationActs as a lubricant, reducing friction and enabling smooth movement between joint surfaces.
#2
Which ligament is commonly injured in a sprained ankle?
Lateral collateral ligament (LCL)
ExplanationProvides lateral stability to the ankle joint; often injured during excessive inversion.
#3
Which type of joint is found between the carpal bones of the wrist?
Gliding joint
ExplanationAllows limited movement in multiple directions, facilitated by flat articulating surfaces.
#4
In which joint is the meniscus commonly found?
Knee joint
ExplanationActs as a cushion and stabilizer between the femur and tibia, aiding in load distribution.
#5
Which type of joint is found in the thumb, allowing a wide range of motion?
Saddle joint
ExplanationAllows movement in two planes, resembling the rider sitting in a saddle.
#6
Which type of joint allows the widest range of motion?
Ball and socket joint
ExplanationOffers a wide range of movement due to its spherical head fitting into a cup-like socket.
#7
What is the purpose of the meniscus in the knee joint?
Enhances joint stability
ExplanationAids in shock absorption, stability, and load distribution within the knee joint.
#8
What is the term for the movement that decreases the angle between two body parts, such as bending the elbow?
Flexion
ExplanationReduces the angle between bones, typically occurring in a sagittal plane.
#9
Which joint allows rotational movement, such as the turning of the head?
Pivot joint
ExplanationAllows rotation around a central axis, common in the neck and forearm.
#10
What is the term for the movement that brings a body part closer to the midline of the body?
Adduction
ExplanationMoves a body part toward the midline of the body, typically occurring in the frontal plane.
#11
Which of the following joints is classified as a fibrous joint?
Skull sutures
ExplanationHeld together by dense connective tissue, providing minimal movement and maximum stability.
#12
What is the function of the articular cartilage in a synovial joint?
Cushions and reduces friction
ExplanationCovers the ends of bones, providing cushioning and reducing friction during movement.
#13
What is the role of tendons in relation to joints?
Connect muscle to bone
ExplanationAttach muscle to bone, transmitting force from muscle contraction to produce joint movement.
#14
What is the purpose of the anterior cruciate ligament (ACL) in the knee joint?
Prevent hyperextension
ExplanationRestrains excessive forward movement of the tibia, preventing hyperextension of the knee.
#15
What is the primary function of the intervertebral discs in the spine?
Provide shock absorption
ExplanationAbsorb shock, distribute pressure, and allow movement between adjacent vertebrae.