lab 1

Question 1

What surrounds the dura mater?

Answer 1

Epidural space

Question 2

Subarachnoid space function

Answer 2

Filled with cerebrospinal fluid, protective cushion around spinal coard and brain

Question 3

Spinal cord membrane order

Answer 3

DASP: Dura mater, arachnoid mater, subarachnoid space, pia mater

Question 4

White mater composition

Answer 4

Myelinated axons, making it white

Question 5

What are the dorsal, lateral, and ventral columns made of?

Answer 5

Axons of neurons

Question 6

What is the largest descending tract?

Answer 6

Corticospinal tract

Question 7

What is an example of a acesnding tract?

Answer 7

Spinothalamic tract

Question 8

What does the spinothalamic tract do

Answer 8

Its neurons carry pain and temperature signals from the spinal cord to the thalamus of the brain

Question 9

What does the corticospinal tract do?

Answer 9

Carries infofrom the cerebral cortex to the motor neurons of the spinal cord

Question 10

What is gray matter made of?

Answer 10

Interneurons that communicate to/from the brain to other spinal cord regions, sensory and motor cell bodies of neurons that bring signals in/out spinal cordd

Question 11

What are fasicles?

Answer 11

They are axon bundles found in a nerve

Question 12

What is a nerve?

Answer 12

Organ compromised of neuron axons, connective tissue, and blood vessels

Question 13

What’s a ganglion?

Answer 13

Enlarged region of a nerve with a cluster of cell bodies (soma)

Question 14

Dorsal root conatins only…

Answer 14

Sensory neurons

Question 15

What is a dorsal root ganglion?

Answer 15

Sensory neuron bodies swelling in the dorsal root

Question 16

Ventral root contains…

Answer 16

Only axons of motor neurons

Question 17

What are rami?

Answer 17

Branches of spinal nerves the send neurons where they need to go

Question 18

What are roots?

Answer 18

Roots come together from the spinal cord to form spinal nerves

Question 19

Dorsal ramus contains

Answer 19

Somatic motor and somatic sensory neurons headed to/from the skin, muscle, and back bones

Question 20

Ventral ramus carries…

Answer 20

Somatic motor and somatic sensory neurons to the skin, muscle, and bones of the body wall and lmibs

Question 21

What are communicating rami?

Answer 21

Small branches that carry neurons to smooth muscle, cardiac muscle, and glands of the body

Question 22

Sympathetic ganglion

Answer 22

Site of synapse and the location of cell bodies

Question 23

Sympathetic chain

Answer 23

The communiating rami and sympathetic ganglion as whole, which functions as part of the ANS to activate sympathetic nervous system

Question 24

Ventral rami form…

Answer 24

Groups of nerves called plexuses

Question 25

Intercoastal nerves send…

Answer 25

Small branches of nerves to nearby muscles, bones, and skin

Question 26

Branchial plexus

Answer 26

C5-T1

Question 27

Lumosacral plexus

Answer 27

L2-S4

Question 28

Polysynaptic reflex

Answer 28

Requires at least two synapses

Question 29

Monosynaptic reflex

Answer 29

Sensory neuron synapses directly with ventral horn motor neurons, like the knee-jerk