BIO 240 Exam 3

Question 1

Arthrology

Answer 1

Study of joints

Question 2

How is a joint formed?

Answer 2

When two bones are connected

Question 3

Joints are classified by?

Answer 3

Function and Structure

Question 4

What is functional classification?

Answer 4

How much movement is possible between bones

Question 5

What is structural classification?

Answer 5

Type of connective tissue that holds the bones &

presence/absence of joint cavity

Question 6

3 Functional Classifications

Answer 6

Synarthroses
Amphiarthroses
Diarthroses

Question 7

3 Structural Classifications

Answer 7

Fibrous
Cartilaginous
Synovial

Question 8

Synarthroses

Answer 8

No movement
e.g., skull
Axial skeleton

Question 9

Amphiarthroses

Answer 9

Slightly movable due to stress/twisting
e.g., intervertebral discs
Axial skeleton

Question 10

Diarthroses

Answer 10

Freely movable joints
e.g., all synovial joints, knee, hip joint
Appendicular skeleton

Question 11

Fibrous

Answer 11

Dense regular connective tissue
No cavity, little if any movement
e.g., skull, ulna/radius, teeth/sockets

Question 12

Cartilaginous

Answer 12

Joints held together by hyaline or
fibrocartilage
No cavity, slightly mov.
e.g., first rib/sternum

Question 13

Synovial

Answer 13

Joints held together by fibrous capsule forming
synovial cavity
Most common, most movable
e.g., knee joint

Question 14

3 Types of Fibrous Joints

Answer 14

Sutures
Syndesmoses
Gomphoses

Question 15

Sutures

Answer 15

Immobile joints (synarthroses) / some bones in skull

Question 16

Syndesmoses

Answer 16

Bones joined by long strands of tissue
slightly movement (amphiarthroses)

Question 17

Gomphoses

Answer 17

Only found in teeth within their sockets

Question 18

2 Types of Cartilaginous Joints

Answer 18

Synchondroses

Symphyses

Question 19

Synchondroses

Answer 19

Made of hyaline cartilage (synarthroses)

e.g., epiphyseal plates, 1st rib and sternum

Question 20

Symphyses

Answer 20

Made of fibrocartilage, movement due to stress
(amphiarthroses)
e.g., pubic symphysis, interv. discs