Lecture 38: Musculoskeletal I

Question 1

two main types of joints

Answer 1

fibrocartilaginous

synovial (diarthrosis)

Question 2

fibrous joint types

Answer 2

suture 
gomphosis
syndemosis 
schindylesis 
(synathrosis)

Question 3

cartilaginous joint types

Answer 3

symphesis
synchondrosis
(amphiarthrosis)

Question 4

where are suture joints found

Answer 4

human skull

Question 5

gomphosis explanation and example

Answer 5

something in a socket connected by ligaments with very little movement (ex: teeth)

Question 6

syndemosis

Answer 6

fibrous connection between bones with no capsules or movement
(ex: tibio-fibular)

Question 7

schindylesis

Answer 7

bone wedged into groove (happens in mouth)

Question 8

synchondrosis explanation and where they are found

Answer 8

joint with bone, then cartilage, then bone. ONLY found in bottom of skull and long bones

Question 9

what kind of joints often ossify

Answer 9

synchondrosis

Question 10

symphysis example

Answer 10

intervertebral discs

Question 11

why do humans have economy of energy

Answer 11

we rely on our ligaments, not our muscles, to keep us erect

Question 12

what way can we rotate our knee

Answer 12

medial to lateral but not lateral to medial or you tear the ligament

Question 13

what supports the arches of the foot

Answer 13

tibialis posterior

Question 14

why would you let go if you are hanging from a cliff

Answer 14

eventually afferent fibers will put you in so much pain that you let go to save your ligaments (body works VERY hard to preserve these)

Question 15

where do long bones grow from

Answer 15

epiphyseal plate 
(cartilage underneath turns into bone)

Question 16

what is the growth plate composed of

Answer 16

resting zone
proliferating zone
hypertrophic zone