Chapter 8: Nervous system (PT. 2)

Question 1

The spinal cord begins where?

Answer 1

below the foramen magmum… to verteberal level between L1/L2

Question 2

Where does the spinal cord end?

Answer 2

ends in tapered cone, called Conus Medullaris

Question 3

Cauda Equina:

Answer 3

“horse tail” group of nerves found at end of spinal cord

Question 4

BONUS FUN QUESTION:
Where did the lady with the name “Cauda Equina” work at? (in Chicago)

Answer 4

CVS

Question 5

How many spinal nerves are there in total?

Answer 5

31 pairs

Question 6

What do those 31 spinal nerves consists of?

Answer 6

-8 pairs of CERVICAL
-12 pairs of THORACIC
-5 pairs of LUMBAR
-5 pairs of SACRAL
-1 pair of COCCYGEAL

Question 7

What is the Medial aspect of the spinal cord called?

Answer 7

Horns

Question 8

What is the Lateral aspect of the spinal cord called?

Answer 8

Columns

Question 9

Cerebrum is also known as…

Answer 9

the large brain

Question 10

Cerebellum is known as the…

Answer 10

small brain

Question 11

Which cerebral hemisphere is the MOST dominant?

Answer 11

LEFT cerebral hemisphere is the most dominant >:)

Question 12

Among the cerebrum, there are 5 lobes on the brain. What are they?

Answer 12

-Frontal lobe (motor/body movement) **
-Parietal lobe (feelings, touch) ** EX: Meissner
-Occipital lobe (visual) **
-Temporal lobe (auditory)
-Insula (gustatory/taste)

Question 13

What are Meninges?

Answer 13

connective tissue membranes (3-layers) of brain and spinal cord

Question 14

What are the 3 layers of the Meninges?

Answer 14

-Dura mater (tough layer; MOST superficial)
-Arachnoid mater (thin middle layer; SPIDER-WEBS)
-Pia mater (MOST deep)

Question 15

What is the subarachnoid space? (found in the arachnoid mater)

Answer 15

space where CSF is contained

Question 16

If a patient has meningitis, what would that mean?

Answer 16

infection of 1/3 layers of the meninges

Question 17

AGAIN, how many cranial nerves are there?

Answer 17

12 pairs

Question 18

While there’s 12 pairs in total, only name 5 (only those will be on the exam)

Answer 18

CN I (1): Olfactory (smell)
CN II (2): Optic (vision)
CN V (5): Trigeminal (touch sensation to forehead, face, and lower jaw)
CN VII (7): Facial (facial expression)
CN X (10): Vagus (organs of digestive system)

Question 19

NOW, out of the 7 cranial nerves we didn’t name… what 3 nerves MOVE OCULAR (eyeball) MUSCLES?

Answer 19

-CN III (3): Oculomotor nerve
-CN IV (4): Trochlear nerve (superior oblique muscle)
-CN VI (6): Abducens nerve (lateral rectus muscle)