This is a PowerPoint about joints in your skeletal system. This biological PowerPoint can be used or accessed by any CXC/CSEC student. This is on the CSEC syllabus. Good luck on your exams! Powerpoint by - Mr. Lynch

2.  Joints are the areas where 2 or more bones
meet.

3.  Most joints are mobile, allowing the bones to
move.

4.  Cartilage. This is a type of tissue that covers the surface of a bone at
a joint. Cartilage helps reduce the friction of movement within a
joint.
 Synovial membrane. A tissue called the synovial membrane lines
the joint and seals it into a joint capsule. The synovial membrane
secretes a clear, sticky fluid (synovial fluid) around the joint to
lubricate it.
 Ligaments. Strong ligaments (tough, elastic bands of connective
tissue) surround the joint to give support and limit the joint's
movement. Ligaments connect bones together.
 Tendons. Tendons (another type of tough connective tissue) on
each side of a joint attach to muscles that control movement of the
joint. Tendons connect muscles to bones.
 Bursas. Fluid-filled sacs, called bursas, between bones, ligaments,
or other nearby structures. They help cushion the friction in a joint.
 Synovial fluid. A clear, sticky fluid secreted by the synovial
membrane.
 Meniscus. This is a curved part of cartilage in the knees and other
joints.

6. 1. Immovable joints
2. Partially movable joints
3. Movable joints

7.  Are also called sutures. The bones are fused
together allowing no movement.
 Eg. are joints to the cranium and pelvic girdle

8.  Allow some movement.
 The bones can slide over each other producing
the movement seen in the wrist and ankle.

9.  These are call gliding joints.
 They also exists between the atlas and the axis at the
top of the neck allowing some movement of the
head. E.g. nodding or shaking.
 This is called a pivot joint.

10.  These are also called synovial joints.
 Synovial fluid in these joints reduces friction
allowing free movement of the bones.

11. 1. Hinge joint- allows movement in one plane,
e.g. elbow, knee & finger joints
Bones of hinge joint are capable of carrying
heavy loads.

12. 2. Ball and socket joint – allows movement
in all planes, e.g. the shoulder & hip
joints.