$$\text{Joint Stability} \propto \text{Muscle Tone}$$

$$\theta = \$$theta_2$$ - \$$theta_1$$

Question 1

Which structural feature distinguishes synovial joints from other types of joints?

Accepted Answer

Presence of a fluid-filled joint cavity

Question 2

A patient presents with inflammation of a structure that reduces friction between a tendon and bone. Which structure is most likely affected?

Accepted Answer

Bursa

Question 3

Which of the following is NOT a natural factor that stabilizes synovial joints?

Accepted Answer

Presence of synovial fluid

Question 4

During a soccer game, a player moves her leg forward at the hip, decreasing the angle between her thigh and torso. Which movement is she performing?

Accepted Answer

Flexion

Question 5

Which synovial joint type allows movement in or around all three planes?

Accepted Answer

Ball-and-socket

Question 6

If a person shrugs their shoulders, which special movement is occurring?

Accepted Answer

Elevation

Question 7

Which movement describes turning the sole of the foot medially?

Accepted Answer

Inversion

Question 8

A gymnast performs a split, moving her legs away from the midline. What is this movement called?

Accepted Answer

Abduction

Question 9

Which equation best represents the relationship between muscle tone and joint stability?

Accepted Answer

$$	ext{Joint Stability} \propto 	ext{Muscle Tone}$$

Question 10

Which movement occurs when the palm faces anteriorly and the radius and ulna are parallel?

Accepted Answer

Supination

Question 11

Which synovial joint type is responsible for the movement of the thumb touching the tips of other fingers?

Accepted Answer

Saddle joint

Question 12

A patient is unable to point their toes downward. Which movement is impaired?

Accepted Answer

Plantar flexion

Question 13

Which joint allows only uniaxial movement?

Accepted Answer

Hinge joint

Question 14

Which movement involves turning a bone around its own long axis?

Accepted Answer

Rotation

Question 15

During a physical exam, a doctor asks a patient to move their jaw forward. Which movement is being tested?

Accepted Answer

Protraction

Question 16

Which synovial joint type is found between the articular processes of vertebrae?

Accepted Answer

Plane joint

Question 17

Which movement is a combination of flexion, abduction, extension, and adduction?

Accepted Answer

Circumduction

Question 18

Which equation best describes the angular movement at a synovial joint?

Accepted Answer

$$	heta = \$$theta_2$$ - \$$theta_1$$

Question 19

Which structure surrounds the synovial joint and helps contain the synovial fluid?

Accepted Answer

Joint capsule

Question 20

A patient with arthritis has reduced synovial fluid. What is the most likely consequence?

Accepted Answer

Increased friction and joint pain

Study Guide: Synovial Joints and Movements in Human Anatomy & Physiology

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