Overview of the Back

Question 1

intervertebral joints

Answer 1

there are 3 joints between each pair of adjoining vertebrae

Question 2

synovial joint

Answer 2

2 between articular process (fluid between)

Question 3

not synovial joints

Answer 3

1 between vertebral bodies

Question 4

intervertebral disc parts

Answer 4

annulus fubrosus and nucleus pulposus

Question 5

annulus fibrosis

Answer 5

composed of tough tissue, outer ring

Question 6

nucleus pulposus

Answer 6

inside, composed of jelly filling; when we move we displace is and the nucleus pulposus squished so we can move

Question 7

CLINICAL: herniated disc

Answer 7

when enough pressure is applied to vertebrae an annulus fibrosus will rupture or tear, this makes the nucleus pulposus squeeze out; pushes on nervous tissue canal

Question 8

extention

Answer 8

reach back

Question 9

flexion

Answer 9

sit up/pick up

Question 10

lateral flexion

Answer 10

lean left and right

Question 11

rotation

Answer 11

rotate from side to side

Question 12

superficial back muscles

Answer 12

muscles associated with the movement of your upper limbs, not true back muscles

Question 13

erector spinae muscles actions

Answer 13

attach to vertebrae medically and ribs laterally (bulk attach to the axial skeleton) actions depends on what muscles are active (muscles straighten/extend spine)

Question 14

unilaterally

Answer 14

use only one side at a time, allow us to have control, produce lateral bending

Question 15

bilaterally

Answer 15

use muscles on both sides, extension!

Question 16

examples of erector spinae muscles

Answer 16

spinalis, longissimus, iliocatalis

Question 17

spinalis

Answer 17

most medial

Question 18

longissimus

Answer 18

between

Question 19

iliocostalis

Answer 19

most lateral