Lab quiz #4

Question 1

What structure of the dura mater extends downward into the longitudinal fissure?

Answer 1

Falx Cerebri

Question 2

Separates the cerebellum from the occipital lobe

Answer 2

Tentorium cerebelli

Question 3

Where can you find the arachnoid granulations?

Answer 3

Dural Venus sinuses

Question 4

Name the meninges in order, including spaces and maters from outermost to innermost.

Answer 4

Epidural space, dura mater, Subdural space, arachnoid mater, subarachnoid space, pia mater,

Question 5

What structure of the spinal cord forms the “tips” of the “butterfly wings”

Answer 5

Posterior gray horn.

Question 6

What is the function of nuclei in the posterior gray horn?

Answer 6

contains sensory nuclei and receives sensory input

Question 7

What forms the bridge between the two “wings” of the central canal of the spinal cord?

Answer 7

Posterior gray commissure and Anterior gray commissure.

Question 8

Describe a Dorsal root shape. Is it sensory, motor, or mixed?

Answer 8

Coming from the CC, has a bulge known as the dorsal root ganglion whereas the other root does not. Sensory

Question 9

Is the Ventral Root sensory, motor, or mixed?

Answer 9

Motor. No ganglion.

Question 10

Describe the location of the Sciatic nerve on a human in anatomical position.

Answer 10

Running down the backside of the leg and splitting into the Tibial nerve and Common Fibular nerve near the knee

Question 11

What is the order of the brachial plexus structures?

Answer 11

Roots - Trunks - Divisions - Cords - Branches

Question 12

Are the Rami (Both Dorsal and Ventral) sensory, motor, or mixed?

Answer 12

Mixed

Question 13

Where does the sympathetic ganglion lie?

Answer 13

On the white and gray ramus communicates

Question 14

What is the Reflex Arc?

Answer 14

Receptor - nerve impulse of Afferent division
or Receptor - spinal cord - interneuron of CNS or Receptor - Spinal cord - motor neuron - muscles of efferent division

Question 15

What type of Reflex arc is the Monosynaptic Arc?

Answer 15

“Knee Jerk” reaction

Question 16

What are the Three Trunks of the Brachial Plexus?

Answer 16

Superior, Middle, Inferior.

Question 17

What are the Three Cords of the Brachial Plexus?

Answer 17

Lateral Cord, Medial Cord, Posterior Cord.

Question 18

The Ventral Rami of vertebrae C5 fusing with C6 becomes ____?

Answer 18

the Superior Trunk of the Brachial Plexus

Question 19

The Anterior division of the Superior trunk and the anterior division of the middle trunk of the brachial plexus becomes _______?

Answer 19

The Lateral Cord.

Question 20

The fusion of vertebrae C8 and T1 becomes _____?

Answer 20

The Inferior trunk of the Brachial Plexus.

Question 21

The posterior division of the superior trunk and the posterior division of the middle trunk become ___?

Answer 21

The Posterior Cord

Question 22

The Medial cord is made from the ___

Answer 22

The posterior division of the Inferior trunk of vertebrae C8 and T1.

Question 23

Vertebrae C7 goes on to becomes the _______?

Answer 23

Middle trunk

Question 24

Structure of the Brain that divides the Frontal and Parietal Lobes.

Answer 24

Central Sulcus

Question 25

What two structures lie either side of the Central Sulcus?

Answer 25

Precentral gyrus and Postcentral gyrus.

Question 26

Which structure of the brain divides the Parietal and Temporal lobe?

Answer 26

Lateral Sulcus

Question 27

Where is the Primary visual cortex located?

Answer 27

The Occipital lobe

Question 28

What is the term for when a nerve or tract crosses over from one hemisphere to the other?

Answer 28

Decussating

Question 29

The dura mater attaches to two structures, what are they?

Answer 29

The periosteum of the skull and the arachnoid mater.