Soc 13- Joints, Tendons, Ligaments

Question 1

What is a joint?

Answer 1

A joint is a place where two or more bones meet.

Question 2

What are the four types of joints?

Answer 2

Pivot
Hinge
Ball and socket
Condyloid

Question 3

Condyloid joints

Answer 3

Ball rests against the end of a bone, rather than inside a socket. This allows circular motion. An exmaple is the wrist.

Question 4

Pivot joint

Answer 4

The Pivot Joint allows bones to rotate. In a pivot Joint, one bone shaped as a Cylinder rotates inside another bone or ligament. There are 3 pivoted Joints in the body, neck, wrist and elbow

Question 5

Hinge Joints

Answer 5

A hinge Joint allows only backward and forwad motion just like the hinge on a door. There
are multiple hinge Joints -Knee, elbow, Ankle.

Question 6

Ball and socket joints

Answer 6

The rounded head of a long bone fits into a cup shaped hole. Some examples of these are hip and shoulder joints.

Question 7

What does a ligament do?

Answer 7

Connects bone to bone

Question 8

What does a tendon do?

Answer 8

Connects muscle to bone

Question 9

Rotation

Answer 9

Movement around a single axis or pivot joint

Question 10

Flexion

Answer 10

Bending movemnt that decreases the angle between body parts

Question 11

Extension

Answer 11

Straightening movement that increases the angle between body parts

Question 12

Dorsi Flexion

Answer 12

Bending or flexing the toes up, closer to the shin( tibialis anterior)

Question 13

Plantar flexion

Answer 13

Extending or pointing the toes down, away from the shin(gastrocnemius)

Question 14

Adduction

Answer 14

Movement that pulls towards the midline of the body

Question 15

Abduction

Answer 15

Movement that pulls away from the midline of the body

Question 16

Circumduction

Answer 16

Moving in a circular or conical shape