Nervous System Flashcards
Divisions of the Nervous System
central and peripheral nervous system
CENTRAL NS
Brain
Spinal Cord
PERIPHERAL
Nerves –
Cranial
Spinal
• Fast-acting control system • Responds to internal and external change • Activates muscles and glands
Nervous System
Regions of the Brain
• Cerebral hemispheres • Diencephalon • Brain stem • Cerebellum
• Largest part
• Consists of two cerebral hemispheres connected by a mass of white
matter – Corpus callosum
• Extends from the Frontal to Occipital bones; above the anterior and
middle cranial fossae ; and posteriorly above the tentorium cerebelli
CEREBRUM
CEREBRUM Consists of two cerebral hemispheres connected by a mass of white
matter
Corpus callosum
• Paired (left and right) superior parts of the brain • Include more than half of the brain mass
Cerebral Hemispheres (Cerebrum)
The surface of cerebral hemisphere
is made of
ridges __
and grooves
(gyri)
sulci
a fold or
convolution
Gyrus ( gyri )
groove between
adjacent gyri
Sulcus ( sulci )
separates the frontal and parietal lobe
Central sulcus of Rolando
forms the boundary between the temporal lobe and the frontal and parietal lobes.
Lateral fissure of Sylvius
- motor area; seat of mental
activities
frontal lobe
- somesthetic area
Parietal lobe