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Human Anatomy and Physiology Help » Gross Anatomy » Joints » Identifying Types of Joints
Example Question #1 : Identifying Types Of Joints
Which of the following types of jointsallows the greatest degree of freedom?
Possible Answers:
Cartilaginous joints
Sinovial joints
Suture joints
Fibrous joints
Synarthroticjoints
Correct answer:
Sinovial joints
Explanation:
Joints allowing a great range of motion require lubrication. This lubrication is provided by sinovial fluid, which is present in sinovial joints. The fluid is encased inside a membrane to provide this lubrication, allowing a greater degree of motion.
Fibrous joints and suture joints are significantly less mobile, while cartilaginous joints are somewhat less mobile. Synarthrosis is a term used to describe any type of joint that does not allow for motion.
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Example Question #411 : Gross Anatomy
What kind of joint exists between the first metacarpal and the trapezium?
Possible Answers:
Hinge joint
Ball-and-socket joint
Saddle joint
Suture joint
Rotational joint
Correct answer:
Saddle joint
Explanation:
Thejoint between the first metacarpal and the trapezium(thumb joint) is a saddle joint. This allows for opposition and movement in three dimensions.
Ball-and-socket joints are found in the shoulder joints and hip joints. Hinge joints are found in the knee and elbow joints. The only rotational joints exist between the radius and ulna, allowing for pronation and supination. Suture joints are used to fuse bones together, and can be found in the skull.
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Example Question #1 : Identifying Types Of Joints
Which of the following best describessynchondroses?
Possible Answers:
Joints capable of a wide range of motion, such as the glenohumoral joint
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
Correct answer:
A joint held together by only a cartilage connection, such as the joint between the diaphysis and epiphysis in a developing bone
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,whichjoins the rib and the cartilage band, and the sternocostal joint, joining the cartilage and the sternum.
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Example Question #4 : Identifying Types Of Joints
Which of the following correctly lists an example of each joint type in order:
Syndesmosis, Cartilaginous, Synovial
Possible Answers:
Inferior tibiofibular, pubic symphesis, intercarpal
Superior tibiofibular, intercarpal, radioulnar
Condyloid, pivot, gliding
Intercarpal, radioulnar, epiphyseal plate
Atlas, axis, metatarsophalangeal
Correct answer:
Inferior tibiofibular, pubic symphesis, intercarpal
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.
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Example Question #1 : Identifying Types Of Joints
What does the following list best describe?
Hinge, Pivot, Ball and Socket, Saddle, Condyloid, Gliding
Possible Answers:
Types of joint-ligament connections
Types of synovial joints
Types of cartilaginous joints
Types of joint plates
Types of fibrous joints
Correct answer:
Types of synovial joints
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, whichallows flexion and extension along a single axis, but not adduction or rotation.
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Example Question #6 : Identifying Types Of Joints
Which of the following is considered a trochoid (pivot) joint?
Possible Answers:
Atlanotoaxial joint
Acromioclavicular joint
Humeroulnar joint
Glenohumeral joint
Sternoclavicular joint
Correct answer:
Atlanotoaxial 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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Example Question #1 : Identifying Types Of Joints
Which is the weaker of the three ball-and-socket joints?
Possible Answers:
The knee, hip, and the shoulder
None of these
The elbow, shoulder, and ankle
The elbow, knee, and hip
The ankle, hip, and knee
Correct answer:
None of these
Explanation:
There are only two ball and socket joints in the human body. They are the hip and the shoulder joints (there are two in the hip and one in eachshoulder). Of the two areas where there are ball and socket joints, the shoulder is the weakest. More shoulder dislocations occur than any other joint. The greater the range of movement, generally the weaker the joint is. Unlike the hip which has a deeper depression for the femur to fit into, the shoulder joint has a relatively shallow depression for the humerus to fit into. This coupled with its weaker tendons makes it the weaker of the two ball and socket joints.
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Example Question #2 : Identifying Types Of Joints
Which type of joint only permits sagittal plane movement?
Possible Answers:
Lateral ginglymus
Ginglymus
Cotyloid
Pivot joint
Ball and socket
Correct answer:
Ginglymus
Explanation:
Ginglymus joints are also known as hinge joints, which only permit flexion/extension movements. The humeroulnar joint of the elbow is the best example of this. Cotyloid and ball and socket joints are synonymous, and permit motion in all three planes. Pivot joints and lateral ginglymus are synonymous, and permite transverse plane movement.
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Example Question #3 : Identifying Types Of Joints
What is an example of a ball and socket joint?
Possible Answers:
The knuckles
The thumb
The shoulder
The elbow
Correct answer:
The shoulder
Explanation:
The shoulder is a ball and socket joint, which allows a wide range of movement. The elbow is a hinge joint, which only allows movement in one plane. The thumb is a saddle joint, which allows movements in a variety of directions. Finally, the knuckles are a condyloid joint which is a rounded bone moving within a shallow "bowl" shape of another bone.
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Example Question #4 : Identifying Types Of Joints
Order the three main types of joints in descending order of mobility.
Possible Answers:
Diarthroses, synarthroses, amphiarthroses
None of these
Synarthroses, diarthroses, amphiarthroses
Amphiarthroses, synarthroses, diarthroses
Diarthroses, amphiarthroses, synarthroses
Correct answer:
Diarthroses, amphiarthroses, synarthroses
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 unwantedsuch as the vertebral joints. Synarthroses allow no movement. The sutures of the skull are an example.
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