The Nervous system

Question 1

What is the Central Nervous System composed of?

Answer 1

The Cerebral hemispheres, cerebellum, brain stem and spinal chord

Question 2

What is the peripheral nervous system composed of?

Answer 2

All the nerves and associated nervous tissue outside the brain and spinal chord

Question 3

What is the overall function of the Central Nervous System?

Answer 3

The CNS is the integrating and controls centre.
The brain integrates information from many internal and external Sense organs, stores information in memory centers, controlled our emotions and intellect, and acts as the main command center, sending information through the spinal chord to muscles and organs throughout the body.

Question 4

What are the four lobes of the brain?

Answer 4

Frontal
Temporal
Parietal
Occipital

Question 5

What does is the function of the frontal lobe?

Answer 5

The frontal lobe is associated with, thinking planning, emotions, problem solving, controlling emotions (particularly negative) and behavioral control.

Also had the motor area which controls voluntary muscles and Broca’s Area which is associated with speech control

Question 6

What is the function of the temporal lobe?

Answer 6

Hearing
Language
Memory

Also contains Wernickes area which is associated with language comprehension

Question 7

What is the function of the parietal lobe

Answer 7

Sensations 
language 
perception 
body awareness 
Attention 

Also contains the Sensory area what is associated with skin sensations (temp, pressure and pain)

Question 8

What is the function of the occipital lobe

Answer 8

Vision

Perception

Question 9

What is the function of the brain stem

Answer 9

Consciousness
Breathing
Heart rate

Question 10

What is the function of the cerebellum

Answer 10

Posture
Balance
Coordination of movement

Question 11

What does the brain stem consist of?

Answer 11

Midbrain
Pons
Medulla oblongata

Question 12

What is the function of the corpus callosum

Answer 12

The cerebral hemispheres are separated by a deep fissure. The corpus callosum is a bridge of fibers which enables information of travel between the two hemispheres

Underneath the corpus callosum there are small clusters of nerve cells called nasal ganglia, these have dopamine receptors which play an important role in motor coordination.
Conditions such as Parkinson’s is caused when these receptors break down or die

Question 13

What is cushing’s triad

Answer 13

Cushing’s triad is a clinical indicator characterized by irregular respiration’s, widening pulse pressures and bradycardia that usually indicates impaired brain stem function usually caused by increased inter cranial pressure.