Activity 3: Synovial Joints and Examining Synovial Joint structure

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1

Synovial joints are special in which the articulating bone ends are separated by what type of type of cavity?

Joint cavity

2

The joint cavity of synovial joints is filled with what type of fluid?

Synovial fluid

3

All synovial joints are classified functionally as what?

Diarthroses

4

Most joints in the body are what type of joints?

Synovial joints

5

What are the 9 structural characteristics of synovial joints?

1. Joint cavity

2. Articular cartilage

3. Articular capsule

4. Synovial fluid

5. Reinforcing ligaments

6. Nerves

7. Blood vessels

8. Articular discs

9. Bursa and tendon sheath

6

Describe the joint cavity of synovial joints in term of what it's filled with and where it is found.

A cavity filled with synovial fluid that is found between articulating bones.

7

Describe the articular cartilage of synovial joints in term of the specific cartilage type and what it covers.

Hyaline cartilage covering surfaces of bones forming joints.

8

The articular capsule of synovial joints is made up of how many layers and which feature of synovial joints does it enclose.

2 layers and encloses the joint cavity

9

What are the 2 layers of the articular capsule?

1. Fibrous layer

2. Synovial membrane

10

The fibrous layer acts as which type of layer and is made up of what type of tissue?

Acts as the external layer and is made up of dense irregular connective tissue.

11

The synovial membrane acts as which type of layer and is made up of what type of tissue?

Acts as the inner layer and is composed of loose connective tissue.

12

Where is the synovial cavity located?

in the joint cavity

13

What is the primary function of the synovial fluid?

Acts as a lubricant to reduce friction

14

Synovial joints are reinforced by what 2 types of reinforcing ligaments?

1. Extracapsular ligaments

2. Intracapsular ligaments

15

Extracapsular ligaments are found outside of what particular feature of synovial joints?

Outside the articular capsule

16

Intracellular ligaments are found inside of what particular feature of synovial joints?

Inside the articular capsule

17

Intracapsular ligaments are covered with what type of membrane?

Synovial membrane

18

The synovial membrane covering intracapsular ligaments separate them from what feature of synovial joints?

The joint cavity

19

The nerves in synovial joints detect what 2 stimuli?

1. Pain

2. Joint stretching

20

What supplies nutrients to most of the synovial membrane?

Blood vessels

21

Articular discs are composed of what type of cartilage?

Fibrocartilage

22

What is the function of articular discs?

Minimize wear to the bone surfaces

23

The bursa and tendon sheath acts as a sac that is filled with what type of fluid and what is that fluid's function?

Filled with synovial fluid that functions to reduce friction.

24

What is the type of cartilage that makes up synovial joints?

Articular cartilage (aka hyaline cartilage)

25

Is there a joint cavity in synovial joints?

Yes

26

What are the 6 structural types of synovial joints?

1. Plane joint

2. Hinge joint

3. Pivot joint

4. Condylar joint

5. Saddle joint

6. Ball and socket joint

27

What is an example of a plane joint that falls under synovial joints?

Between carpals

28

What is an example of a hinge joint that falls under synovial joints?

elbow joint

29

What is an example of a pivot joint that falls under synovial joints?

joint between atlas and axis

30

What is an example of a condylar joint that falls under synovial joints?

joint between occipital condyles and atlas

31

What is an example of a saddle joint that falls under synovial joints?

between trapezium and metacarpal I

32

What is an example of a ball and socket joint that falls under synovial joints?

shoulder joint

33

What is the functional classification for plane, hinge, pivot, condylar, saddle, and ball and socket joints that all fall under synovial joints?

Diarthrosis

34
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Identify the missing features.

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