AP03 - joint tissue

Question 1

Name the 3 main classifications of joints

Answer 1

fibrous
cartilaginous
synovial

Question 2

Name 3 types of fibrous joints

Answer 2

sutures
syndesmoses
gomphosis

Question 3

What are the true names for the types of cartilaginous joints?

Answer 3

1 - synchondroses

2 - symphyses

Question 4

With regards to joints, what are labra?

Answer 4

articular lips

Question 5

Define fulcrum

Answer 5

the point about which the lever rotates (normally the joint)

Question 6

Define load arm

Answer 6

part of the lever between the fulcrum and the load (this is either body weight or external resistance)

Question 7

Define force arm

Answer 7

part of the lever between the fulcrum and the force applied

Question 8

Define first class lever, and give an example

Answer 8

fulcrum between the load and force arm

extensor muscles of the head and neck acting o n the atlanto-occipital joint

Question 9

Define second class lever, and give an example

Answer 9

load between the force and fulcrum (like a wheelbarrow)

someone in anatomical position and raising s they’re standing on their toes

Question 10

What is the most common type of lever in the body?

Answer 10

3rd class

Question 11

What type of joint exists between the bones of an infant?

Answer 11

frontanelle, between calvaria of an infant to allow for stretching

Question 12

Give 2 examples of a secondary cartilaginous joint

Answer 12

manubriosternal joint, pubic symphysis

Question 13

Name 7 joint SHAPE types

Answer 13

hinge
plane
pivot (trochoid)
saddle
ball and socket (spheroidal)
condyloid
ellipsoid

Question 14

What is the function of the annulus fibrosis?

Answer 14

limits rotation of vertebrae

pain reception

Question 15

Define hilton’s law

Answer 15

the nerve supplying the muscles extending directly across the acting at a given joint not only supplies the muscle but innervates the joint and the skin overlying the tissue