ch.2 - movement

Question 1

what are the meeting places between 2 or more bones

Answer 1

joints

Question 2

what are the functions of a joint?

Answer 2

they give stability to the skeleton and hold it together

Question 3

body movements happen when muscles __________ across joints

Answer 3

contract

Question 4

what are important connective tissues?

Answer 4

ligaments and tendons

Question 5

how are joints classified?

Answer 5

by structure and/or function

Question 6

the less movable the joint, the _______ stable it is

Answer 6

more

Question 7

synarthroses are

ex. found in skull

Answer 7

non-moving joints

Question 8

amphiarthroses

Answer 8

slightly-moving joints

Question 9

diarthroses

Answer 9

freely-moving joints

Question 10

what are some examples of freely-moving joints?

Answer 10

knee & elbow joints

Question 11

how do you classify bones?

Answer 11

based on what binds them & if a cavity is present

Question 12

these types of joints connect bones with the collagen fibers of dense connective tissues

Answer 12

fibrous joints

Question 13

fibrous joints are mostly __________

Answer 13

immovable

Question 14

what are the fibrous joints in the skull called?

Answer 14

sutures

Question 15

fibrous joints in your tibia and fibula (in the lower leg) are called

Answer 15

syndesmoses

Question 16

joints that keep teeth embedded in their sockets

Answer 16

gomphoses

Question 17

what do cartilaginous joints do?

Answer 17

connect bones with cartilage

Question 18

_______ joints can be rigid but slightly movable

Answer 18

cartilaginous

Question 19

what is a synchondrosis joint and where is it located?

Answer 19

an immovable joint w/ a bar/plate of hyaline cartilage btwn the sternum and first rib

Question 20

what is a symphysis joint?

Answer 20

a slightly movable joint made of fibrocartilaginous intervertebral discs (act as shock absorbers btwn vertebrae)

Question 21

a ________ joint is a joint that connects bones w/ dense connective tissues + a fluid filled joint cavity

Answer 21

synovial

Question 22

what is a function of synovial joints?

Answer 22

they’re freely movable

Question 23

what are the different types of fibrous joints?

Answer 23

sutures, syndesmoses, and gomphoses

Question 24

fibrous joints are mostly ___________

ex. like those found in skull

Answer 24

immovable

Question 25

synchrondrosis and symphysis are examples of which types of joints?

Answer 25

cartiliginous

Question 26

synovial joints are all ____________

Answer 26

diarthroses

Question 27

what is the function of synovial fluid?

Answer 27

in the articular cavity and acts as a lubricant

also: protects against bone friction

Question 28

gliding or “plane” joints allow which type of movement?

ex. intercarpal & intertarsal joints (in wrists & ankles)

Answer 28

gliding

Question 29

this type of joint moves in one direction and only allow for angular movement (extension & hyperextension)

ex. elbow and finger joints

Answer 29

hinge

Question 30

pivot joints allow ________ as well as twisting movements back and forth

ex. where humerus meets radius in the elbow

Answer 30

rotation

Question 31

which type of movement also allows flexion and extension alongside abduction (moving away) and adduction (moving toward)?

ex. in the wrist

Answer 31

condylar

Question 32

saddle movement allows ________ as well as flexion/extension and abduction/adduction

ex. thumb joints

Answer 32

opposition