Basal ganglia and cerebellum and random

Question 1

function of motor association areas

Answer 1

planning and sequence

Question 2

what happens if you have a lesion of the motor association areas

Answer 2

get apraxia

Question 3

functions of the basal ganglia

Answer 3

• allow the selection of complex pattern of voluntary movements
• evaluating the success of actions in achieving the goals of those actions
• initiating movements

Question 4

functions of the cerbellum

Answer 4

• coordinating the timing and sequence of muscle actions and movements
• maintenance of muscle tone
• motor learning
• planning sequences of muscle activation for complex movements

Question 5

lesion of the cerebellum will result in a problem on which side of the body

Answer 5

ipsilateral side

Question 6

what is the somatotography of the cerebellum

Answer 6

medial cerebellum - controls proximal muscles

lateral cerebellum - controls lateral muscles

Question 7

why is a lesion of the cerebellum ipsilateral

Answer 7

due to double cross

cerebellum crosses over to contralateral motor cortex, but then the motor cortex crosses again to the other side

Question 8

why do cones have a greater visual acuity than rods

Answer 8

cones have a much lower convergence ratio to bipolar cells than rods

Question 9

which muscle changes the curvature of the lens

Answer 9

ciliary muscle

Question 10

what is the association between UMN signs of the face

Answer 10

will have weakness of the CONTRALATERAL lower face

Question 11

3 types of herniation

Answer 11

subfalcine - cingulate gyrus under the falx cerebri
transtenorial - medial temporal lobe under tentorium
tonisllar - cerebellar tonsills pushed through foramen magnum

Question 12

signs and symptoms of a transtentorial herniation

Answer 12

• fixed pupil dilation
• loss of consiousness
• loss of motor and sensory
• duret haemorrhages

Question 13

what is the communication between the facial vein and the cavernous sinus

Answer 13

the opthalmic vein