Neurons & CNS

Question 1

Neurilemma

Answer 1

Cell membrane of Schwann cell

Question 2

Nodes of ranviero

Answer 2

Gaps in myelin sheath that speed up AP

Question 3

Afferent neuron

Answer 3

Sensory neuron going to CNS

Question 4

Efferent neuron

Answer 4

Motor neuron going to the muscle

Question 5

Nerves

Answer 5

Parallel bundles if peripheral axons enclosed by successive wrappings of connective tissue

Question 6

Major lobes of brain

Answer 6

Frontal
Parietal
Occipital
Temporal

Question 7

Functions of cerebral cortex

Answer 7

Red - motor
Blue - sensory
Pink - association

Question 8

Gray matter

Answer 8

Cell bodies & I myelinated nerves

Question 9

White matter

Answer 9

Dense collections of myelinated axons

Question 10

Diencephalon

Answer 10

Hypothalamus
Epithalamus - choroid plexus
Thalamus
Pituitary gland

Question 11

Brain stem

Answer 11

Pons
Medulla
Midbrain

Question 12

Decussation of pyramids

Answer 12

Where tracts cross over to other side

Question 13

Ventricles

Answer 13

Lateral ventricles
3 ventricle
4 ventricle
Cerebral aqueduct

Question 14

Choroid plexus

Answer 14

Makes CSF

Question 15

Meninges

Answer 15

Dura mater “tough mother”
Arachnoid mater “spidery”
Subarachnoid space “Filled with CSF “
Pia mater “gentle mother”

Question 16

Schwann cells

Answer 16

Makes myelin sheath around axon