Lesson 19 Lab

brain and spinal cord, interpret incoming information and issue instructions

cranial and spinal nerves, ganglia, and sensory receptors; serve as communication lines as they carry impulses

in fetal development, two anterior outpocketings extend from the forebrain and grow fast to form the cerebral hemispheres.

cerebral hemispheres

elevated ridges of tissues

seperate gyri by shallow grooves

divides the frontal lobe from the partietal lobe

seperates the temporal lobe from the partietal lobe

on the medial surface of each hemisphere divides the occipital lobe

impulses traveling from the bodys sensory receptors are located here

where the primary motor area is located

gray matter of the cerebrum

composed of fiber tracts carrying impulses to of from the cortex

synapse point of cranial nerve I

cranial nerve II

where the fibers of the optic nerves partially cross over

connecting the pons below with cerebrum above

"bridge" consists primarily of motor and sensory fiber tracts connecting the brain with lower CNS centers

lowest brain stem region, composed primarily of fiber tracts

crossover point for the major motor tracts

located on the posterior aspect of the midbrain, a brain stem structure

major commissure connecting the cerebral hemispheres, it arches above the structures of the diencephalon and roofs over the lateral ventricles.

a bandlike fiber tract concerned with olfaction as well as limbic system functions

seperates the lateral ventricles of the central hemisphere

most important basal ganglia, it is arching and comma shaped

composed of the putamen and globus pallidus nuclei

a spray of projection fibers coursing down from the precentral gyrus

a broad band of fibrous material

sometimes what the caudate nucleus and lentiform nucleus are referred to

consists of two large lobes of gray matter that laterally enclose third ventricle of the brain

connects two thalamic lobes and bridges the ventricle

tiny orifice connecting the third ventricle with the lateral ventricle on the same side

makes up the floor and the inferolateral walls of the third ventricle

what the pituritary gland hangs from, a slender stalk

in the epithalamus, a neuroendocrine structure

a slender canal traveling through the midbrain, connecting the third and fourth ventricle in the hindbrain

made of two lateral hemispheres each with three lobes

tree like braching of the cerebellar white matter

connective tissue membranes

the outer most meninx and is leathery. it is double layered

inner layer of dura mater

outermost brain covering of the dura mater and continous with spinal cord

the middle meninx, weblike,

highly vascular and delicate, clings tenaciously to the surface of the brain following its convolutions

small capillary knots hanging from the roof of the ventricles of the brain

forms a watery cushon that protects the delicate brain against blows to the head.

what the CSF surculates through

• Number: I
• Function: smell

• Number: II
• Function: vision

• Number: VIII
• Location: 2 branches; vestibular = assoc. with equilibrium cochlear = assoc. with hearing