Flashcards in Chapter 9- Articulations Deck (40)
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Joints, or articulations, are classified on the basic of their degree of movement. What identifies the joints on the basis of: no movement, slightly moveable, freely moveable?
Synarthrosis, amphiarthrosis, diarthrosis
1
The amphiarthrotic articulation that limits movements between the two pubic bones is the...
Pubic symphysis
2
The type of synarthrosis that binds each tooth to the surrounding bony socket is a...
Gomphosis
3
Which joint is correctly matched with its type of joint?
Knee-synovial
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The functions of synovial fluid that fills the joint cavity are...
1. It nourishes the chondrocytes
2. It provides lubrication
3. It acts as a shock absorber
5
The primary functions of menisci in synovial joints are...
1. To subdivide a synovial cavity
2. To channel the flow of synovial fluid
3. To allow for variations in the shapes of the articulate surfaces
6
Flex ion is defined as movement that...
Decreases the angle between articulating elements
7
Abduction and adduction always refer to movements of the...
Appendicular skeleton
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Movements that occur at the shoulder and the hip represent the actions that occur at a...........joint
Ball and socket
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The reason that the elbow and knee are called hinge joints is...
They permit angular movement in a single plane
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The type of joint that connects the finger and toes with the metacarpals and metatarsals is an...
1. Condylar joint
2. Biaxial joint
3. Synovial joint
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Examples of angular motion include...
1. Flexion and extension
2. Abduction and adduction
3. Circumduction
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The parts of the vertebral column that do not contain intervertebral discs are the...
1. Sacrum
2. Coccyx
3. First and second cervical vertebrae
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Movements of the vertebral column are limited to...
1. Flexion and extension
2. Lateral Flexion
3. Rotation
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The joint that permits the greatest range of motion of any joint in the body is the...
Shoulder joint
15
The elbow joint is quite stable because the...
1. Bony surfaces of the humerus and ulna interlock
2. Articular capsule is very thick
3. Capsule is reinforced by stout ligaments
16
Examples of monaxial joints, which permit angular movements in a single plane, are the...
Elbow and knee joints
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The knee joint functions as a...
Hinge joint
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The reason the points of contact in the knee joint are constantly changing is...
The rounded femoral condyles roll across the top of the tibia
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The risk of fractures increase with age because...
Bone mass decreases and bones become weaker
20
Arthritis encompasses all of the rheumatic diseases that affect...
Synovial joints
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The digestive and urinary systems are intimately associated with the skeletal system because they...
Provide calcium and phosphate minerals needed for bone growth
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Localized masses of adipose tissue that protect articular cartilages and act as packing material for the joint are...
Fat pads
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A movement away from the longitudinal axis of the body in the frontal plane is...
Abduction
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The opposing movement of supination is...
Pronation
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The special movement of the thumb that enables it to grasp and hold an object is...
Opposition
26
Twiddling your thumbs during a lecture demonstrates the action that occurs at a...
Saddle joint
27
A characteristic decrease in height with advanced age may result from...
Decreased water content of the nucleus pulposus in an intervertebral disc
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When the nucleus pulposus breaks through the anulus and enters the vertebral canal, the result is an...
Herniated disc
29
Contraction of the biceps brachii muscle produces...
Supination of the forearm and Flexion of the elbow
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The unique compromise of the articulations in the appendicular skeleton is...
The stronger the joint, the more restricted the range of motion
31
Even though the specific cause may vary, arthritis always involve damage to the...
Articular cartilages
32
In a shoulder seperation, the...
Acromioclavicular joint undergoes partial or complete seperation
33
If you run your fingers along the superior surface of the shoulder joint, you will feel a process called the...
Acromion
34
Structures found in synovial joints that reduce friction where large muscles and tendons pass across the joint capsule are referred to as...
Bursae
35
A complete dislocation of the knee is extremely unlikely because of the...
Seven major ligaments that stabilize the knee joint
36
The mechanism that allows standing for prolonged periods without continually contracting the extensor muscles is...
A slight lateral rotation of the tibia tightens the anterior cruciate ligament and jams the meniscus between the tibia and femur
37
Continuous passive motion of any injured joint appears to encourage the repair process by...
Improving the circulation of synovial fluid
38
A meniscus, or articular disc within a synovial joint, may...
1. Subdivide a synovial cavity
2. Channel the flow of synovial fluid
3. Allow for variations in the shapes of the articular surfaces
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