Chapter 9- Articulations

Question 0

The amphiarthrotic articulation that limits movements between the two pubic bones is the…

Answer 0

Pubic symphysis

Question 1

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?

Answer 1

Synarthrosis, amphiarthrosis, diarthrosis

Question 2

The type of synarthrosis that binds each tooth to the surrounding bony socket is a…

Answer 2

Gomphosis

Question 3

Which joint is correctly matched with its type of joint?

Answer 3

Knee-synovial

Question 4

The functions of synovial fluid that fills the joint cavity are…

Answer 4

1. It nourishes the chondrocytes
2. It provides lubrication
3. It acts as a shock absorber

Question 5

The primary functions of menisci in synovial joints are…

Answer 5

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

Question 6

Flex ion is defined as movement that…

Answer 6

Decreases the angle between articulating elements

Question 7

Abduction and adduction always refer to movements of the…

Answer 7

Appendicular skeleton

Question 8

Movements that occur at the shoulder and the hip represent the actions that occur at a………..joint

Answer 8

Ball and socket

Question 9

The reason that the elbow and knee are called hinge joints is…

Answer 9

They permit angular movement in a single plane

Question 10

The type of joint that connects the finger and toes with the metacarpals and metatarsals is an…

Answer 10

1. Condylar joint
2. Biaxial joint
3. Synovial joint

Question 11

Examples of angular motion include…

Answer 11

1. Flexion and extension
2. Abduction and adduction
3. Circumduction

Question 12

The parts of the vertebral column that do not contain intervertebral discs are the…

Answer 12

1. Sacrum
2. Coccyx
3. First and second cervical vertebrae

Question 13

Movements of the vertebral column are limited to…

Answer 13

1. Flexion and extension
2. Lateral Flexion
3. Rotation

Question 14

The joint that permits the greatest range of motion of any joint in the body is the…

Answer 14

Shoulder joint

Question 15

The elbow joint is quite stable because the…

Answer 15

1. Bony surfaces of the humerus and ulna interlock
2. Articular capsule is very thick
3. Capsule is reinforced by stout ligaments

Question 16

Examples of monaxial joints, which permit angular movements in a single plane, are the…

Answer 16

Elbow and knee joints

Question 17

The knee joint functions as a…

Answer 17

Hinge joint

Question 18

The reason the points of contact in the knee joint are constantly changing is…

Answer 18

The rounded femoral condyles roll across the top of the tibia

Question 19

The risk of fractures increase with age because…

Answer 19

Bone mass decreases and bones become weaker

Question 20

Arthritis encompasses all of the rheumatic diseases that affect…

Answer 20

Synovial joints

Question 21

The digestive and urinary systems are intimately associated with the skeletal system because they…

Answer 21

Provide calcium and phosphate minerals needed for bone growth

Question 22

Localized masses of adipose tissue that protect articular cartilages and act as packing material for the joint are…

Answer 22

Fat pads

Question 23

A movement away from the longitudinal axis of the body in the frontal plane is…

Answer 23

Abduction

Question 24

The opposing movement of supination is…

Answer 24

Pronation

Question 25

The special movement of the thumb that enables it to grasp and hold an object is…

Answer 25

Opposition

Question 26

Twiddling your thumbs during a lecture demonstrates the action that occurs at a…

Answer 26

Saddle joint

Question 27

A characteristic decrease in height with advanced age may result from…

Answer 27

Decreased water content of the nucleus pulposus in an intervertebral disc

Question 28

When the nucleus pulposus breaks through the anulus and enters the vertebral canal, the result is an…

Answer 28

Herniated disc

Question 29

Contraction of the biceps brachii muscle produces…

Answer 29

Supination of the forearm and Flexion of the elbow

Question 30

The unique compromise of the articulations in the appendicular skeleton is…

Answer 30

The stronger the joint, the more restricted the range of motion

Question 31

Even though the specific cause may vary, arthritis always involve damage to the…

Answer 31

Articular cartilages

Question 32

In a shoulder seperation, the…

Answer 32

Acromioclavicular joint undergoes partial or complete seperation

Question 33

If you run your fingers along the superior surface of the shoulder joint, you will feel a process called the…

Answer 33

Acromion

Question 34

Structures found in synovial joints that reduce friction where large muscles and tendons pass across the joint capsule are referred to as…

Answer 34

Bursae

Question 35

A complete dislocation of the knee is extremely unlikely because of the…

Answer 35

Seven major ligaments that stabilize the knee joint

Question 36

The mechanism that allows standing for prolonged periods without continually contracting the extensor muscles is…

Answer 36

A slight lateral rotation of the tibia tightens the anterior cruciate ligament and jams the meniscus between the tibia and femur

Question 37

Continuous passive motion of any injured joint appears to encourage the repair process by…

Answer 37

Improving the circulation of synovial fluid

Question 38

A meniscus, or articular disc within a synovial joint, may…

Answer 38

1. Subdivide a synovial cavity
2. Channel the flow of synovial fluid
3. Allow for variations in the shapes of the articular surfaces

Question 39

Rotation of the forearm that makes the palm face posteriorly is…

Answer 39

Pronation