Introduction to the Brain Flashcards
What is myelin?
Fatty layer covering axons that helps speed up the conduction of signals.
What are oligodendrocytes?
Cells of myelination of the PNS
What are Schwann cells?
Cells of myelination of the CNS
What is NIssl substance?
They are granules of rough endoplasmic reticulum. They are areas where the proteins and neurotransmitters of the nerves are synthesized.
Where do sensory neurons generally arise from?
Dorsal Horn of the Spinal Cord
Where do motor neurons generally arise from?
Ventral Horn of the Spinal Cord
Where do the preganglionic autonomic neurons generally arise from?
Lateral Horn or IML (Intermedlateral)
Where can you find unipolar neurons?
Retina
What are glia?
They are the connective tissue of the CNS
What are the components of the CNS?
Brain and the Spinal Cord
Where is the ventral side of the brain located?
Always inferior
Where is the dorsal side of the spinal cord?
Towards your back
What are the lobes of the brain?
Frontal
Parietal
Temporal
Occipital
What are the general functions of the frontal lobe?
Motor
What are the general functions of the parietal lobe?
Sensory
What are the general functions of the temporal lobe?
Speech/Auditory
What are the general functions of the occipital lobe?
Vision
What are the gyrus and sulcus of the brain?
Gyrus are the hills.
Sulcus are the valleys.
What is the importance of the calcarine sulcus?
It is the concentration and vision center of the occipital lobe.
What is included in the diencephalon?
Thalamus and Hypothalamus
What is next to the lateral ventricle?
Caudate Nucleus
What are components of the basal ganglia?
Putamen
Globus Pallidus
Caudate Nucleus
What part of the brain is the most cell dense?
Cerebellum
What are the corpora quadra gemini?
Superior and Inferior Colliculi
What are the parts of the brainstem?
Medulla
Pons
Midbrain
