Spinal Cord

Question 1

is a cylinder-shaped tube of tissue that runs through the center of your spine, from your brainstem to your lower back. It’s made of nerves and cells that carry messages from your brain to the rest of your body. Your spinal cord is one of the main parts of your nervous system.

Answer 1

spinal cord

Question 2

Your spinal cord carries nerve signals from your _______ to the rest of your body and back. The signals are electrical messages that help almost everything in your body work correctly, including:

Answer 2

brain

Controlling your body’s movements and functions
Reporting senses to your brain
Managing your reflexes

Question 3

Your spinal cord starts at the bottom of your _______ and runs the length of your spine. It ends in your lower back in a cone shape called the ________

Answer 3

brainstem
conus medullaris.

Question 4

What are the three main parts of the spinal cord?

Answer 4

Cervical (your neck).
Thoracic (your upper back).
Lumbar (your lower back).

Question 5

Cervical

Answer 5

C1 - C8

Question 6

Thoracic

Answer 6

T1-T12

Question 7

Lumbar

Answer 7

L1-L5

Question 8

Sacral

Answer 8

S1-S5

Question 9

Carries sensory information (touch, pain, temperature) from the body to the spinal cord.

Answer 9

Dorsal (posterior) root:

Question 10

Carries motor commands from the spinal cord to the muscles.

Answer 10

Ventral (anterior) root:

Question 11

31 pairs in total, divided into cervical, thoracic, lumbar, sacral, and coccygeal regions.

Answer 11

Spinal Nerves:

Question 12

Protective Structures of Spinal cord

Answer 12

Vertebrae
Meninges
Cerebrospinal Fluid (CSF):

Question 13

: Strong bones that form the spinal column and protect the cord

Answer 13

Vertebrae

Question 14

: Three protective layers—dura mater (outer), arachnoid mater (middle), and pia mater (inner).

Answer 14

Meninges

Question 15

Liquid that cushions the spinal cord, protects it from injury, and carries nutrients.

Answer 15

Cerebrospinal Fluid (CSF):

Question 16

final nerve is a bundle at the base of your spine called the ________ that gives sensation to your lower body

Answer 16

cauda equina

Question 17

cauda equina _________ continues as a bundle of nerves.

Answer 17

(“horse’s tail”)

Question 18

Your spinal cord is covered in layers of tissue called _______ (just like the ones that surround your brain). These protective tissues include:

Answer 18

meninges

Question 19

These protective tissues include:

Answer 19

Dura mater
Arachnoid mater
Pia mater

Question 20

The outer layer that protects your spinal cord from injury.

Answer 20

Dura mater:

Question 21

The middle layer.

Answer 21

Arachnoid mater:

Question 22

The deepest inner layer.

Answer 22

Pia mater:

Question 23

A _______ is the pathway for reflex actions, allowing the body to respond instantly without waiting for the brain.

Answer 23

reflex arc