EXAM 4

Question 1

Neuron

Answer 1

Individual nerve cell

Question 2

Nucleus

Answer 2

Collection of neurons

Question 3

Region

Answer 3

Collection of nuclei

Question 4

Main brain divisions

Answer 4

Cerebrum, diencephalon, brain stem, cerebellum

Question 5

Functions of the meninges

Answer 5

Cover and protect CNS
Protect blood vessels and enclose venous sinuses
Contain CSF

Question 6

Dura mater

Answer 6

Tough mother
2 layers of tissue

Question 7

Arachnoid mater

Answer 7

Spider mother
Connective tissue between the dura mater and pia mater

Question 8

Pia mater

Answer 8

Tender mother
Thin layer of connective tissue

Question 9

Falx cerebri

Answer 9

Separates right and left hemispheres

Question 10

Falx cerebelli

Answer 10

Forms partition between right hemisphere of cerebellum and left hemisphere of cerebellum

Question 11

Tentorium cerebilli

Answer 11

Acts as a tent above cerebellum and cerebrum

Question 12

Brain herniation

Answer 12

Injury to the brain that causes an increase in pressure in the skull; pushes parts of the brain into other regions

Question 13

Ventricles

Answer 13

Cavities of the brain
Lined with ependymal cells
All connected

Question 14

How are all the ventricles connected?

Answer 14

Lateral ventricles are connected to the 3rd ventricles via interventricular foramen
3rd ventricle connected to 4th ventricle via cerebral aqueduct
4th ventricle connected to subarachnoid space via holes called median and lateral aperatures

Question 15

Function of CSF

Answer 15

Buoyancy/protection
Waste product removal: picks up waste material and dumps back into the cardiovascular system

Question 16

Choroid plexus

Answer 16

Production of CSF

Question 17

Flow of CSF

Answer 17

Lateral ventricles
Intervertebral foramina
Third ventricle
Cerebral aqueduct
Fourth ventricle
Either down into the central canal or out of the medial and lateral aperatures into
Subarachnoid space
Around brain and spinal cord
Arachnoid villus
Venous sinuses