The Brain in General- Week One

Question 1

What divides the 2 hemispheres?

Answer 1

Inter hemipheric fissure

Question 2

What divides the frontal lobe and parietal lobe?

Answer 2

Central sulcus

Question 3

The Sylvian fissure divides which 2 lobes?

Answer 3

Frontal and temporal lobes

Question 4

Human vs animal brains:

Answer 4

Humans have larger brains
More complex shape
Convolutions: increased S.A
Gyri and Sulci
bigger brain to body weight ratio
Extreme No of neurons

Question 5

The 4 Lobes (Briefly)

Answer 5

Frontal Lobe: memory, planning and movement
Parietal Lobe: somatosensory cortex, attention
Temporal Lobe: contains auditory cortex, involved in speech perception
Occipital Lobe: visual cortex, vision

Question 6

Locations of the Cortexes:

Answer 6

Motor Cortex: in the frontal lobe just to the left of the central sulcus
Somatosensory Cortex: parietal lobe just to the right of the central sulcus
Visual Cortex: in the occipital lobe
Auditory Cortex: temporal lobe
Olfactory Cortex: frontal lobe

Question 7

Role of the Cerebellum:

Answer 7

allows multitasking, execution of motor skills and some cognition

Question 8

Role of the Brainstem:

Answer 8

Networks of connections from the spinal cord

Question 9

The role of ‘pons’:

Answer 9

sleep/arousal, breathing. motor control and posture

Question 10

The role of ‘medulla’:

Answer 10

controls reflexive actions; vomiting, balance, respiration and heart rate

Question 11

What are the roles of cranial nerves?

Answer 11

Control unconcious actions: e.g heart rate and gut activity

V.important in relation to emotional reactions e.g stress