From here the csf flows through the 8 into the fourth

From here, the CSF flows through the (8) into the fourth ventricle. The CSF leaves the fourth ventricle
through three openings: the median aperture and two lateral apertures. CSF is now located in the (9)
space around the brain and circulates all around the cerebrum and cerebellum. CSF continues to flow
into the inner part of the spinal cord by flowing through the tiny (10) of the spinal cord, as well as around
the exterior of the spinal cord in the (11) space. Because CSF is continually being made at the rate of
about 20 mL/hr, it has to exit back into the bloodstream by being reabsorbed through the (12) that
protrude into the dural venous sinuses. The venous sinus that overlies the brain superiorly is called the
(13).
1.__choroid plexus ________
2.__lateral ventricle________
3.__third _ventricle_______
4.___fourth ventricle ____
5.__ependymal cells_____
6.__Septum pellucidum ____
7.__third ventricle________
8.__cerebral aqueduct________
9.__subarachnoid________
10.__median apertures________
11.__subarachnoid ________
12.__arachnoid villi________
13._superior sagittal sinus______

Using Your Knowledge
A. MRI Scan of the Human Brain
Midsagittal section of the human brain MRI
1._corpus callosum_________
2.__thalamus________
3.__midbrain________
4.__cerebellum________
5.__pons________
B. Transverse Section of a Human Brain
Identify the structures in Figure 20.17 , a transverse section.

Human brain, transverse section
6.__Falx cerebri ________
7.__cerebrum ________
8.__ lateral ventricle________
9.__septum pellucidum______
10.__choroid plexus ________
C. Sagittal Section of Human Brain
Identify the structures in Figure 20.18 , sagittal section.

FIGURE 20.18 Human brain, sagittal section
11.__dicephalon________
12._brain stem_________
13._pons_________
14.___superior sagittal sinus_______
15.__cerebrum________
D. Brain Injury
Match the brain injury to the appropriate change in function. Use Figure 20.19 to locate the area injured.

FIGURE 20.19 Human brain, lateral view
a.cessation of breathing
b.loss of equilibrium
c.loss of use of left arm
d.loss of vision
e.loss of pain localization in the shoulder
__loss of vision ________ 16. The effect of a blow to the back of the head that damages this area.
_loss of Equilibrium_________ 17. The effect of alcohol on this area.
__cessation of breathingf________ 18. The effect of a head injury (i.e., from diving into a pool) that forces
the dens into this area.
_ loss of use of left arm _________ 19. The effect of a stroke that damages this area.
__ loss of pain localization in the shoulder____ 20. The effect of a stroke that damages this area.