spinal canal and spinal cord relationships ex. 1 QQ

Question 1

at the intervertebral foramen, what is the relationship between spinal nerve number and vertebral nerve number along the cervical spine?

Answer 1

in the cervical spine, spinal nerves exit above the segment they are numbered after (C8 is exception to this rule) C3 nerve exits above C3 or between C2/3

Question 2

at the intervertebral foramen, what is the relationship between spinal nerve number and vertebral nerve number along the thoracic and lumbar spine and sacrum?

Answer 2

in the thoracic and lumbar spine for the sacrum, spinal nerves exit below the segment they are numbered after (Co1 exception) T6 nerve exits below T6 or between T6/T7

Question 3

what is the relationship between rib number and vertebral numbers at the costocentral joint?

Answer 3

rib number always equates to the same vertebral number at the costocentral joint;
rib 3 articulates with T3 segment and also T2 segment
only ribs 1, 11, 12 joint with single segment

Question 4

what is the relationship between spinal nerve number, rib number and vertebral number in a thoracic intervertebral foramen?

Answer 4

the spinal nerve number relates to the upper segment number in the vertebral couple
the rib number relates to the lower segment number in the vertebral couple