Question 1

Which of the following are biaxial joints?&#10;A)pivot and hinge&#10;B)ball-and-socket&#10;C)condyloid and saddle&#10;D)pivot and condyloid

Accepted Answer

Condyloid and saddle joints are both biaxial, as they permit movement in two planes (frontal and sagittal). Pivot and hinge joints are uniaxial, allowing movement in only one plane, while ball-and-socket joints are triaxial, allowing movement in all three planes. Therefore, only choice C fits the criteria of a biaxial joint.

Question 2

Which of the following describes a joint that allows motion around two axes?&#10;A)uniaxial&#10;B)triaxial&#10;C)nonaxial&#10;D)biaxial

Accepted Answer

A joint that allows motion around two different axes is referred to as a biaxial joint.

Question 3

The hip joint is classified as which of the following?&#10;A)hinge&#10;B)ball-and-socket&#10;C)biaxial&#10;D)cartilaginous

Accepted Answer

The hip joint is a ball-and-socket joint, where the rounded head of the femur bone fits into the cup-shaped socket of the pelvic (acetabulum) bone. This type of joint allows for a wide range of motion in multiple planes, making it suitable for weight-bearing activities like walking, running, jumping, and squatting. The hinge joint is a uni-axial joint (like the elbow and knee) that permits only flexion-extension movements, while the biaxial joint (like the ankle and wrist) allows for flexion-extension and abduction-adduction movements. The cartilaginous joint (like the pubic symphysis and intervertebral discs) is connected by fibrocartilage or hyaline cartilage and permits limited movement.

Question 4

The elbow joint is classified as which of the following?&#10;A)pivot&#10;B)hinge&#10;C)saddle&#10;D)condyloid

Accepted Answer

The elbow joint is a hinge joint, which means it allows for movement in only one plane, similar to the opening and closing of a hinged door. The bones involved in the elbow joint are the humerus, radius, and ulna. The humerus has a rounded end that fits into a cup-shaped depression in the ulna, while the radius rotates around the ulna to allow for forearm movement.

Question 5

Synovial joints are usually classified as which of the following?&#10;A)synarthrotic&#10;B)diarthrotic&#10;C)nonaxial&#10;D)ball-and-socket

Accepted Answer

Synovial joints are classified as diarthrotic because they are freely movable joints that have a synovial cavity filled with synovial fluid that allows for smooth movement between the articulating bones. Choices A and C are incorrect because synarthrotic joints are immovable and nonaxial joints have movement in only one plane. Choice D is incorrect because ball-and-socket joints are just one type of synovial joint, but not all synovial joints are ball-and-socket joints.

Question 6

Which motions are usually permitted by a hinge joint?&#10;A)flexion and extension&#10;B)medial rotation and lateral rotation&#10;C)abduction and adduction&#10;D)right lateral flexion and left lateral flexion

Accepted Answer

A hinge joint permits flexion (bending) and extension (straightening) in only one plane of motion, similar to the motion of a door on a hinge. Hinge joints are found in the knees, elbows, and fingers.

Question 7

Which are functional classifications of a joint?&#10;A)synarthrotic,amphiarthrotic,diarthrotic&#10;B)fibrous,cartilaginous,synovial&#10;C)synarthrotic,synovial,triaxial&#10;D)diarthrotic,cartilaginous,nonaxial

Accepted Answer

Synarthrotic, amphiarthrotic, and diarthrotic are terms that classify joints based on their function or degree of mobility. Synarthrotic joints are immovable, amphiarthrotic joints are slightly movable, and diarthrotic joints are freely movable.

Question 8

Fibrous joints are usually classified as which of the following?&#10;A)synarthrotic&#10;B)diarthrotic&#10;C)nonaxial&#10;D)ball-and-socket

Accepted Answer

Fibrous joints are characterized by their lack of movement and immovability, which is also known as synarthrosis. Synarthrosis means "together immovable," which is exactly what fibrous joints are. They are held together by fibrous connective tissue, which provides stability and support. Therefore, the best choice is A, synarthrotic.

Question 9

Which type of joint is usually least mobile?&#10;A)fibrous&#10;B)cartilaginous&#10;C)synovial&#10;D)amphiarthrotic

Accepted Answer

Fibrous joints are usually the least mobile because they are connected by dense connective tissue, allowing little to no movement between the bones they connect.

Question 10

Which motions are usually permitted by a pivot joint?&#10;A)flexion and extension&#10;B)rotations&#10;C)abduction and adduction&#10;D)lateral flexions

Accepted Answer

Pivot joints, such as the atlantoaxial joint in the neck, typically allow for rotational motions, such as shaking your head "no." Flexion and extension, abduction and adduction, and lateral flexion are more commonly associated with other types of joints, such as hinge joints or ball-and-socket joints.

Question 11

Which is a saddle joint?&#10;A)elbow&#10;B)hip&#10;C)carpometacarpal of the thumb&#10;D)atlantoaxial

Accepted Answer

The answer of Which is a saddle joint?&#10;A)elbow&#10;B)hip&#10;C)carpometacarpal of the...

Question 12

Which type of joint usually allows the most motion?&#10;A)fibrous&#10;B)cartilaginous&#10;C)synovial&#10;D)synarthrotic

Accepted Answer

The answer of Which type of joint usually allows the...

Question 13

Which are structural classifications of a joint?&#10;A)synarthrotic,amphiarthrotic,diarthrotic&#10;B)synarthrotic,fibrous,synovial&#10;C)uniaxial,biaxial,triaxial&#10;D)fibrous,cartilaginous,synovial

Accepted Answer

The answer of Which are structural classifications of a joint?&#10;A)synarthrotic,amphiarthrotic,diarthrotic&#10;B)synarthrotic,fibrous,synovial&#10;C)uniaxial,biaxial,triaxial&#10;D)fibrous,cartilaginous,synovial...

Deck 2: The Skeletal System