LAB 4
BRAIN ANATOMY
A. Objective: Learn the various brain regions and their protective coverings.
1.
Review the cranial fossae and relate the positioning of the major portions of the brain to them.
2.
Locate the model of the dura mater (covering of the brain), identify these areas and Label any of these structures
visible on the diagram to the right:
a.
b.
c.
d.
3.
Using the laboratory models identify the lobes of the brain and label
each on the diagram below at the right.
a.
b.
c.
d.
e.
4.
falx cerebri
falx cerebelli
tentorium cerebelli
diaphragmae sellae
frontal
parietal
temporal
occipital
insula
Using the laboratory models locate these anatomical features and label any that are visible on the diagram to the
right:
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
cerebrum
cerebellum
pons
medulla
median longitudinal fissure
transverse fissure
central sulcus
lateral fissure
precentral gyrus
postcentral gyrus
superior temporal gyrus
B. Objective: Learn about the ventricular system of the brain
1.
Locate the models of the ventricles, identify the various parts, learn about CSF circulation, and label any of the
structures below that are visible on the diagram to the right.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
lateral ventricles
interventricular foramina
third ventricle
cerebral aqueduct
fourth ventricle
lateral apertures
median aperture
choroid plexus
arachnoid granulations (villi)
superior sagittal sinus
17
A
12
8
2
3
7
1
9
5
4
10
B
C
6
LATERAL VIEW
11
SAGITTAL VIEW
C. PUT THE NUMBER OF THE CORRESPONDING BRAIN REGION NEXT THE MATCHING
STATEMENTS BELOW:
7
Sounding out unfamiliar words
4
Speech production
2
Primary motor cortex
8
Sensory association area
11
Cingulate gyrus
5
Primary auditory cortex
3
Primary sensory cortex
9
Visual association area
1
Intellect, recall, personality
12
Learned, repetitious motor skills
10
Primary visual cortex
6
Auditory association area
18
D. Answer the following questions
1.
How many lobes are present in the human brain?
2.
What is a fissure?
3.
What is a gyrus?
4.
What is the function of the precentral gyrus?
5.
What is the function of the postcentral gyrus?
6.
What is the function of the superior temporal gyrus?
7.
What lobe is most closely related to the function of vision?
8.
What is the function of dura mater?
9.
What is the relationship between dura mater and “sinuses”?
10. What is the cortex of the brain?
11. What is CSF?
19
12. What produces CSF? How?
13. What is the composition of CSF?
14. Trace the circulation of CSF beginning in the lateral ventricles.
15. What structure “absorbs” the CSF back into the circulatory system?
16. What does the condition hydrocephalus have to do with CSF?
17. What does a lumbar puncture have to do with CSF?
20