Joints Chapter 8 PPT Notes

Question 1

What is another name for joints?

Answer 1

Joints are also called articulations.

Question 2

What are the 2 primary functions of joints?

Answer 2

1. Mobility
2. Hold skeleton together

Question 3

What are the 2 ways to classify joints?

Answer 3

1. Structural (fibrous, cartilaginous, synovial)
2. Functional (syn/amphi/diarthrosis)

Question 4

What are the 3 structural classifications of joints?

Answer 4

1. fibrous
2. cartilaginous
3. synovial

Question 5

What are the main characteristics of Fibrous joints?

Answer 5

a. Fibrous: bones are joined by fibrous tissue and no cavity is present.
b. The amount of movement relies upon the length of the fibers.
c. Most of this type are immovable.
d. Fibrous joints are further divided into sutures, syndesmoses, gomphoses.

Question 6

What are the (3) types of fibrous joints?

Answer 6

1. Sutures (seams)
2. Syndesmoses
3. gomphoses.

Question 7

What are the characteristics of sutures (fibrous joints)?

Answer 7

i. Very short connective tissue.
ii. Ossify during middle age (synostoses)

Question 8

What are the characteristics of syndesmoses (fibrous joints)?

Answer 8

i. Bones connected by ligaments.
ii. Fiber length varies which dictates movement.
iii. Tibiofibular joint

Question 9

What are the characteristics of sutures (fibrous joints)?

Answer 9

peg in socket (tooth)

Question 10

Characteristics of Cartilaginous Joints

Answer 10

1. Linked together by cartilage.
2. Lacks a joint capsule.
3. Two types of cartilaginous joints: (Synchondrosis: immovable & symphysis: slightly moveable)

Question 11

What are the 2 types of cartilaginous joints?

Answer 11

1. Synchondrosis: immovable
2. symphysis: slightly moveable

Question 12

What are the characteristics of synchondrosis joints?

Answer 12

1. Utilizes hyaline cartilage
2. Epipheseal plate and 1st rib attachment.

Question 13

What are the characteristics of symphysis joints?

Answer 13

1. Articular surface covered with hyaline cartilage that is attached to fibrocartilage.
2. Intervertebral discs and symphysis pubis.

Question 14

What are the characteristics of synovial joints?

Answer 14

a. Most abundant joint type in the body.
b. Opposing bones separated by fluid filled cavity.
c. All are classified as diathrotic.
d. Free movements.

Question 15

What are the 5 general features of synovial joints?

Answer 15

1. Articular cartilage: absorbs compression.
2. Joint cavity
3. Articular capsule:
   a. External fibrous capsule (dense irregular con tissue)
   b. Synovial membrane (loose connective tissue)
4. Synovial Fluid
5. Reinforcing ligaments