CNS-Brain, cerebrum, limbic, brainstem, cerebellum, spinal cord Flashcards
what is gyri and sulci
gyri (folds)
sulci (shallow grooves)
Left and right cerebral hemispheres is Separated by
longitudinal fissure
Left and right cerebral hemispheres is connected by
corpus callosum
outer gray matter
cerebral cortex
Outer surface of gray matter have
Neuronal cell bodies and unmyelinated fibers
White matter beneath the cortex have
Myelinated fibers that transmit impulses
- Cerebral hemisphere is divided into 4 lobes+1
○ Frontal lobe
○ Parietal lobe
○ Temporal lobe
○ Occipital lobe
○ Insula
Motor areas
- Primary motor area
- Premotor area
- Broca’s area
○ Left side of the cerebrum controls skeletal muscles on
the right side of the body
Frontal lobe
- General sensory areas
- Primary sensory area
- Higher-level reasoning
Parietal Lobe
- Hearing
- Wernicke’s area
- Language
Temporal Lobe
- Vision
Occipital Lobe
- Complex of deep nuclei of cerebrum
- Associated with the thalamus of the diencephalon
Limbic system
2 parts of Diencephalon
Thalamus
Hypothalamus
-acts as a switching station for incoming
sensory messages
-It directs the sensory messages to the appropriate lobe
of the cerebrum.
Thalamus
- Monitors the internal environment
- Temperature regulation
- Autonomic functions
○ Heart rate, digestive function, and urinary function - Endocrine functions
- Food and water intake
- Sexual development
Hypothalamus