Identifying Types of Joints

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Anatomy › Identifying Types of Joints

Questions 11 - 20
11

The intercarpal joints are an example of                      joints.

gliding

pivot

saddle

condylar

ball and socket

Explanation

Gliding joints, also called plane joints, have flat articular surfaces that allow movement in all different directions. (There are eight carpal bones in the wrist: scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, hamate.)

12

What type of structural joint contains a cavity filled with fluid?

Synovial joint

Fibrous joint

Cartilaginous joint

All of these

None of these

Explanation

Synovial joints contain a synovial cavity that contains synovial fluid. This joint structure allows for many different types of movement. Neither cartilaginous nor fibrous joints contain fluid-filled cavities.

13

The radiocarpal joint differs from the intercarpal joints in that                     .

the radiocarpal joint is a condylar joint, and the intercarpal joints are gliding joints

the radiocarpal joint is a gliding joint, and the intercarpal joints are condylar joints

the radiocarpal joint is a hinge joint, and the intercarpal joints are gliding joints

the radiocarpal joint is a condylar joint, and the intercarpal joints are hinge joints

Explanation

The radiocarpal or wrist joint is a condylar synovial joint because the radius has a concave surface, and the carpals have a convex surface. The joint connects the radius with the scaphoid, lunate, and triquetrum.

14

What does the following list best describe?

Hinge, Pivot, Ball and Socket, Saddle, Condyloid, Gliding

Types of synovial joints

Types of cartilaginous joints

Types of fibrous joints

Types of joint plates

Types of joint-ligament connections

Explanation

These are all types of synovial joints, defined by their apparent shapes and mechanisms of motion. For example, the knee is a hinge joint, which allows flexion and extension along a single axis, but not adduction or rotation.

15

Order the three main types of joints in descending order of mobility.

Diarthroses, amphiarthroses, synarthroses

Diarthroses, synarthroses, amphiarthroses

None of these

Amphiarthroses, synarthroses, diarthroses

Synarthroses, diarthroses, amphiarthroses

Explanation

Diarthroses like the elbow and knee allow free movement. Amphiarthroses allow slight movement and are found in areas where flexibility is needed, but a lot of flexibility would be unwanted such as the vertebral joints. Synarthroses allow no movement. The sutures of the skull are an example.

16

Which of the following correctly lists an example of each joint type in order:

Syndesmosis, Cartilaginous, Synovial

Inferior tibiofibular, pubic symphesis, intercarpal

Intercarpal, radioulnar, epiphyseal plate

Superior tibiofibular, intercarpal, radioulnar

Condyloid, pivot, gliding

Atlas, axis, metatarsophalangeal

Explanation

Syndesmosis joints are held together by bands of connective tissue (ligaments), but lack the synovial fluid and capsule structure of a synovial joint. This limits their mobility; while some motion between the bones is possible, the joint is fairly rigid. The inferior (or distal) tibiofibular joint is a syndesmosis in which the tibia and fibula are connected near the ankle. Damage to this joint is known as a high ankle sprain.

Cartilaginous joints encompass the classifications of synchondroses and symphyses. Synchondroses are cartilaginous joints in which bones are joined by hyaline cartilage, while symphyses are joined by fibrocartilage. The pubic symphysis is a cartilaginous joint that connects the pelvic bones via fibrocartilage.

Synovial joints are surrounded by a joint capsule, which holds the joint in a matrix of synovial fluid. This fluid provides the joint with lubrication for a wide range of motion. Many of the joints commonly associated with movement and locomotion are synovial joints. The intercarpal joints, found between the bones of the wrist, are synovial joints.

17

Which type of joint permits the movements of flexion, extension, adduction, abduction, and rotation?

Ball and socket

Hinge

Ellipsoid

Gliding

Pivot

Explanation

Ball and socket joints, such as the glenohumeral joint in the shoulder and acetabulofemoral joint in the hip, allow for the widest range of movement.

18

Which of the following best describes synchondroses?

A joint held together by only a cartilage connection, such as the joint between the diaphysis and epiphysis in a developing bone

A joint held together by only a ligament connection, such as the radioulnar joint

A collagenous structure that surrounds an entire synovial joint

The cartilage pad found at the ends or articularting bones, helping to cushion and anchor joints

Joints capable of a wide range of motion, such as the glenohumoral joint

Explanation

Synchondroses are joints connecting two bones by a band of cartilage. Commonly, this type of joint is found at the ends of developing long bones between the diaphysis and epiphyses, where a thin band of cartilage is responsible for bone growth during intramembranous ossification. This joint eventually fuses as growth ends. In contrast, the ribs are connected to the sternum via permanent synchondrosis joints: the costochondral joint, which joins the rib and the cartilage band, and the sternocostal joint, joining the cartilage and the sternum.

19

The joints of the knuckles are examples of                      joints.

condylar

hinge

gliding

saddle

ball-and-socket

Explanation

Condylar or ellipsoid joints involve one bone that is concave and one bone that is convex. The metacarpophalangeal joints of the knuckles, as well as the wrist joint, are both condylar. As for the other bones of the hand, the intercarpal joints are gliding and the interphalangeal joints are hinge.

20

Which of the following is considered a trochoid (pivot) joint?

Atlanotoaxial joint

Sternoclavicular joint

Acromioclavicular joint

Glenohumeral joint

Humeroulnar joint

Explanation

The atlantoaxial joint connects the C1 vertebra (atlas) and the C2 vertebra (axis). This joint allows for side-to-side turning of the head, classifying it as a pivot joint. The atlantoaxial joint has the greatest range of motion of any intervetebral joints in the body.

The humeroulnar joint is a a hinge joint (the elbow), capable of flexion and extension in a single plane. The sternoclavicular joint is a saddle joint joining the medial end of the clavicle to the sternum. The acromioclavicular joint is a gliding joint joining the distal end of the clavicle to the acromion process of the scapula. The glenohumeral joint is a ball and socket joint securing the proximal end fo the humerus to the glenoid fossa of the scapula.

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