NeuroAnatomy - Lecture Two Objectives

Question 1

What does the ACA supply in the brain?

Answer 1

sagittal wall of frontal and parietal lobes

Question 2

What does the MCA supply in the brain?

Answer 2

lateral portions of frontal, temporal, and parietal lobes

Question 3

What does the MCA bifurcate into and where?

Answer 3

Superior and Inferior MCA. Superior runs above the lateral fissure, inferior runs below

Question 4

What does the PCA supply in the brain?

Answer 4

inferior/medial temporal lobe and the occipital lobe

Question 5

What is the MCA’s pathway?

Answer 5

As it leaves the Circle of Willis it travels laterally and continues through the lateral (Sylvian) fissure

Question 6

What is the ACA’s pathway?

Answer 6

It runs anteriorly in the longitudinal fissure along the medial surface cerebral hemisphere, ascending and “circling back” along cingulate gyrus

Question 7

What is the PCA’s pathway?

Answer 7

It runs posterior along medial and inferior surfaces of each temporal lobe and eventually “wraps” around to posterior surfaces of each hemisphere

Question 8

Which hemisphere is considered our Dominant hemisphere and why?

Answer 8

Left because it contains our language loop

Question 9

What does the FRONTAL lobe control?

Answer 9

• motor movement
• executive function (goal
directed behavior)
• emotions, self-awareness and
motivation
• social behavior

Question 10

What does the PARIETAL lobe control?

Answer 10

• somatosensory perception
• integration of auditory, visual &
somatospatial information
• understanding communication
• thinking, analysis, directing
attention

Question 11

What does the TEMPORAL lobe control?

Answer 11

• auditory perception/processing
• plays role in understanding
language
• involved in long term memory
and emotion

Question 12

What does the OCCIPITAL lobe control?

Answer 12

visual perception and processing

Question 13

What are the six types of sensory input?

Answer 13

auditory, visual, somatosensory, olfactory, gustatory, vestibular

Question 14

The primary sensory cortex….

Answer 14

detects the sensory modality

Question 15

the secondary sensory cortex….

Answer 15

recognizes the sensory modality

Question 16

What does the associative sensory cortex do?

Answer 16

interprets/gives meaning to the sensory modality

Question 17

what happens after the associative sensory cortex does its job?

Answer 17

sends info to posterior association cortex which then sends it to the anterior association cortex for the frontal lobe to decide what to do!