Mod B Week 2 Final

Front 1

What are the two main divisions of the body?

Back 1

The Central Nervous System & The Peripheral Nervous System

Front 2

What do they consist of?

Back 2

CNS: Brain and Spinal Cord
PNS: 12 pairs of cranial nerves and 31 pairs of spinal nerves.

Front 3

Describe the three different neurons.

Back 3

Sensory or afferent nerves receive stimuli from sense organs.
Connecting neurons or associative or internuncial neurons transmit impulses between sensory and motor neurons
Motor neurons or efferent neurons deliver response actions away from the brain and spinal cord.

Front 4

Define nerve fibers.

Back 4

Dendrites- Carry impulses toward the cell body.
Axon- Single nerve fiber that carries impulses away from the cell body.
Schwan cells surround axons of peripheral nerves to form the myelin sheath.

Front 5

Define action potential.

Back 5

Sodium and potassium ions move through channels in the cell membrane creating a current which will change the inside of the neuron to be more positive.(depolarization)

Front 6

How fast do normal nerve impulses travel?

Back 6

200 mph

Front 7

Define simple and complex reflexes.

Back 7

Simple reflex action involves impulses going to the spinal cord and back. No interpretation is needed or decision is required.
Complex reflex action relays impulses to the spinal cord, brain and then back down the spinal cord and out to appropriate nerve: Interpretation is required.

Front 8

What is the longest nerve in the body?

Back 8

sciatic nerve

Front 9

Define the autonomic nervous system:

Back 9

Regulates the bodies automatic or involuntary functions. Prepares the body for fight and flight response.

Front 10

Name the five divisions of the brain.

Back 10

Cerebrum
Cerebellum
Medulla Oblongata
Pons
Mid Brain

Front 11

Define the four lobes of the cerebrum.

Back 11

Frontal Lobe: emotions, personality, intellectual functions and speech.
Occipital Lobe: Vision
Parietal Lobe: many sensory and motor skills.
Temporal Lobe: hearing and smell

Front 12

What are the functions of the hypothalamus?

Back 12

Controls the autonomic nervous system
Controls most of the functioning of internal organs including blood pressure and intestinal tract.
Controls appetite, body temperature, wakefulness and certain emotions.

Front 13

Describe Meninges:

Back 13

Pia Mater- inner most layer; contains blood vessels to nourish nerve tissues
Arachnoid- middle layer; delicate lace like membrane.
Dura mater- outer layer; protects the CNS from damage.

Front 14

What is the differnce between Bells palsey and cerebral palsey?

Back 14

Bells palsey is a disease of the 7th cranial nerve.
Cerebral palsey is caused by a lack of oxygen associated with birth and it involves both nerves and muscle.

Front 15

List the diseases and disorders of the nervous system.

Back 15

Alzheimers, ALS/Lou Gehrigs disease, Bells Palsey, cerebral Palsey, encephalitis, epilepsy, hydrocephalus, meningitis, multiple sclerosis, parkinsons disease, Reyes syndrome, spinal cord defects and tourettes syndrome.

Front 16

Define spinal cord defects.

Back 16

they result from failure of tissue to properly close during the first trimester of pregnancy.

Front 17

Define hypnotics and sedatives.

Back 17

Hypnotics; used to produce sleep or drowsiness
Sedatives: used to reduce anxiety or calm the patient.

Front 18

What are the three categories of antidepressant medications.

Back 18

Trycyclic Antidepressants
Monoamine oxidose inhibitors
Selective seratonin reuptake inhibitors (SSRI)

Front 19

Which drugs are considered SSRI's?

Back 19

Prozac, Paxil, Zoloft, Luvox and effexor.

Front 20

Which drugs are considered antipsychotics?

Back 20

Risperdal, Clozeril, Tindal and Zyprexa